[CentOS] Server hangs after installing KVM
Hi, I just received a Supermicro server back from factory repair. Installed CentOS 6.3 x86_64 fresh from DVD (tried with 6.4, same result). Everything goes fine until i install Virtualization* yum groups. Virtualization is enabled in BIOS. Server boots, CentOS loads and i have even a login prompt. If i'm fast enough to enter login name and password, shell works for about 10 sec. Then, it seems to hang. Pressing CTRL-C seems to work as i see it on screen (CTRL-C text). I'm used to Xen in CentOS 5 where we can choose a non-Xen kernel at boot time. With CentOS 6 and KVM, i'm kinda lost! I Googled a lot and didn't find anything to disable KVM / select a a non-KVM kernel a boot up time. The server has been repaired but i'm not sure if there is still other problems that prevent KVM to work. I know that they installed the last BIOS version. I have other identical servers that works well with KVM. I tried to disable all i saw for virtualization support in BIOS, result is the same. I did memtest86 tests without problem. Here are the specs: Supermicro 6026T-3RF (mainboard X8DT3-S) BIOS 03/17/12 15:50:21 Ver 2.1 Xeon E5520 Kingston 12 Gig RAM (Triple Channel) LSI 9240-8i What should i do to debug this? Any pointers, URL, etc would be greatly appreciated! Thanks all. Guy Boisvert, ing. IngTegration inc. http://www.ingtegration.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs after installing KVM
Le 2013-06-27 10:08, m.r...@5-cent.us a écrit : Hi, there, Guy Boisvert wrote: I just received a Supermicro server back from factory repair. Installed CentOS 6.3 x86_64 fresh from DVD (tried with 6.4, same result). Everything goes fine until i install Virtualization* yum groups. Virtualization is enabled in BIOS. Server boots, CentOS loads and i have even a login prompt. If i'm fast enough to enter login name and password, shell works for about 10 sec. Then, it seems to hang. Pressing CTRL-C seems to work as i see it on screen (CTRL-C text). I'm used to Xen in CentOS 5 where we can choose a non-Xen kernel at boot time. With CentOS 6 and KVM, i'm kinda lost! I Googled a lot and The choose a kernel is the grub menu, and unless you've disabled it, you can still do it. Try hitting any key as soon as you see the about to boot ... in x sec I'd boot to single usermode (s at the end of the kernel line), and check the logs. And I really, *REALLY* don't like Supermicro. We've got a large bunch of servers from Penguin, who's all Supermicro, and we've sent a ton back for repair, as well as doing things here, *and* several of those sent back were sent back more than once. Luck. mark Thanks for your response Mark. I was able to get the Grub menu but there was only one kernel choice. I'll try in single user mode and get back here. As for Supermicro, i was using Tyan before but their support (and associated website) was very bad (last time i used it was 2 years ago, maybe it's better now, dunno...). If we exclude Supermicro and Tyan, i'm not sure were i could go for OEM servers. I don't like HP, Dell, etc.: Expensive and they use a lot of for them only parts + they try to sell packages that are often not what i want. Thanks again. Guy Boisvert, ing. IngTegration inc. http://www.ingtegration.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs after installing KVM
Le 2013-06-27 10:39, Reindl Harald a écrit : Am 27.06.2013 16:26, schrieb Guy Boisvert: As for Supermicro, i was using Tyan before but their support (and associated website) was very bad (last time i used it was 2 years ago, maybe it's better now, dunno...). If we exclude Supermicro and Tyan, i'm not sure were i could go for OEM servers. I don't like HP, Dell, etc.: Expensive and they use a lot of for them only parts + they try to sell packages that are often not what i want your choice - you get what you pay for these days someone buys a HP Pro Liant with a vSphere license or install VMware ESXi in the free version and install his operating systems on top of it which is a scaleable solution and can be upgraded to a cluster with HA, SAN storages whatever without ever re-install the guest systems but you get what you paied for... I kicked out VMWare and their Windoze tools i hate (i know that now they offer a VM with command line tools). I'm not saying VMWare is not good though, it's just i hate their tools. On top of that, it can cost a lot of money. But they have the features! I moved to KVM and i'd say i like it a lot. I'm planning to test OpenStack. For storage, big names (3Par, Netapp, etc) offer nice things but it is rather expensive. I'm testing iSCSI servers with DRDB, STONITH, etc. Idea is to use commodity hardware and standard software. Nothing new and i'm not against commercial solution with support and all. It's just we try to offer affordable and open solutions. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs after installing KVM
Le 2013-06-27 11:18, Tru Huynh a écrit : Can you rule out a conflict with the LSI card? ie removing it completely. CentOS 6.4 without installing the virtualisation tool works? Bios version at latest available version? Cheers, Tru I just installed Ubuntu 12.04 LTS on the serveur with KVM and it works. Ubuntu kernel is 3.2.0-29-generic x86_64. So if other identical servers we have works with CentOS 6.4 and the same LSI card, the difference i see for now is the firmware version...Didn't had a chance to really compare but it seems to have a few new parameters in the problematic server's BIOS. I tried to change all of them before coming here. I'm opening a tech support case with Supermicro. Thanks for your help! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Sluggish server with big array [SOLVED]
Le 2013-01-15 10:35, Paul Heinlein a écrit : On Tue, 15 Jan 2013, Guy Boisvert wrote: I have a couple of samba shares from the 11 TB array (all of them are on the 11TB array). The strange behavior is that if i ls -al /home/data, i have to wait 7-8 seconds to see the output. If i do a simple ls, output is instantaneous. I see about the same delay when i access the samba shares from the server (related ?). I don't know where to start with this! This sounds like it might be an issue with cacheing user info. Do you have a remote authentication server, e.g., LDAP? Are you running nscd or sssd? Does re-starting the cacheing daemon help? Hi Paul, You were right: I turned off SMB, NMB Winbind and ls -al on the large array become fast as usual. Digging a little deeper, i found that some of the sub-directories in /home/data had been restored from another server and that they showed in unknown group 10432 in ls -al . So i just did: [root@radium home]# chgrp -R domain users /home/data So in conclusion, it seems that my ls -al on the filesystem containing unknown GID translated into queries to Active Directory and for whatever reason, resulted in a delay of several seconds (like 10-15 seconds). Thanks Paul again. Guy Boisvert IngTegration inc. http://www.ingtegration.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Sluggish server with big array
Write Accessread/write LV Creation host, time radium.canal.qc.ca, 2012-11-28 15:52:17 -0500 LV Status available # open 1 LV Size10.42 TiB Current LE 2732799 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:2 --- Logical volume --- LV Path/dev/vg_radium/lv_root LV Namelv_root VG Namevg_radium LV UUIDLp5Mkd-Ht2J-XBfF-Yafx-w1HY-nIlN-1771T3 LV Write Accessread/write LV Creation host, time radium.canal.qc.ca, 2012-11-28 13:57:36 -0500 LV Status available # open 1 LV Size50.00 GiB Current LE 12800 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 --- Logical volume --- LV Path/dev/vg_radium/lv_home LV Namelv_home VG Namevg_radium LV UUIDVCvRSg-x1On-9GgR-09we-yIx6-uMvi-dYO2UZ LV Write Accessread/write LV Creation host, time radium.canal.qc.ca, 2012-11-28 13:57:40 -0500 LV Status available # open 1 LV Size443.59 GiB Current LE 113560 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:3 --- Logical volume --- LV Path/dev/vg_radium/lv_swap LV Namelv_swap VG Namevg_radium LV UUIDGZorIv-iovS-n2S2-JkSe-bDUl-kwhk-E6potz LV Write Accessread/write LV Creation host, time radium.canal.qc.ca, 2012-11-28 13:58:01 -0500 LV Status available # open 1 LV Size5.91 GiB Current LE 1514 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1 I did directly over lvm: mkfs.ext4 /dev/vg_radium2/lv_data [root@radium ~]# parted GNU Parted 2.1 Using /dev/sda Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) select /dev/sdb Using /dev/sdb (parted) print Error: /dev/sdb: unrecognised disk label /etc/fstab = /dev/mapper/vg_radium-lv_root / ext4 defaults,acl1 1 UUID=2169688f-e830-458d-b31e-25aa0dc9c753 /boot ext4 defaults1 2 /dev/mapper/vg_radium-lv_home /home ext4 defaults1 2 /dev/mapper/vg_radium-lv_swap swap swap defaults0 0 tmpfs /dev/shm tmpfs defaults0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults0 0 proc/proc proc defaults0 0 /dev/mapper/vg_radium2-lv_data /home/data ext4 defaults,acl,noatime0 3 Sorry for the long post! Guy Boisvert IngTegration inc. http://www.ingtegration.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Sluggish server with big array
Le 2013-01-15 10:35, Paul Heinlein a écrit : On Tue, 15 Jan 2013, Guy Boisvert wrote: I have a couple of samba shares from the 11 TB array (all of them are on the 11TB array). The strange behavior is that if i ls -al /home/data, i have to wait 7-8 seconds to see the output. If i do a simple ls, output is instantaneous. I see about the same delay when i access the samba shares from the server (related ?). I don't know where to start with this! This sounds like it might be an issue with cacheing user info. Do you have a remote authentication server, e.g., LDAP? Are you running nscd or sssd? Does re-starting the cacheing daemon help? Hi Paul, Samba is hooked to Active Directory using Winbind. sssd is off and nscd doesn't seems to be there. As for AD (Active Directory), a simple getent passwd shows all local accounts and very quickly the AD accounts. I read in the Ubuntu mailing lists that there seemed to be some bugs with EXT4 and large arrays (very slow mounts). There was a message saying that finally the slow mount problems was fixed with kernel 3.6! Thanks. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.6 - Samba server + Windows error 233
Le 2011-04-29 14:03, Guy Boisvert a écrit : Le 2011-04-27 13:44, Ryan Wagoner a écrit : On Wed, Apr 27, 2011 at 10:53 AM, Guy Boisvert boisvert@videotron.ca wrote: Hi! I have upgraded my servers yesterday to CentOS 5.6 via yum update. Everything went smoothly except that i have client workstations not part of the domain that are not able to access the samba server anymore. The samba server is part of the domain. We recently added Windows 2008 R2 DC. Everything was working smoothly until the CentOS update. If I remember correctly with a Windows 2008 DC you need to use the samba3x packages. Ryan Thanks Ryan. I will try it next weekend and report back to the list. If there is a Samba3X, this is oubiously for something. I was forced to change our DCs to Winblows 2008 and it turned into a big mess here (Samba freaking, DNS instability, Exchange 2010 doing its best to force us upgrading to Outlook 2010, etc etc etc)! Sorry for the long delay, had a crash and my Thunderbird files were corrupt... So, i confirm that Samba-3X fixed my problem. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.6 - Samba server + Windows error 233
Le 2011-04-27 13:44, Ryan Wagoner a écrit : On Wed, Apr 27, 2011 at 10:53 AM, Guy Boisvert boisvert@videotron.ca wrote: Hi! I have upgraded my servers yesterday to CentOS 5.6 via yum update. Everything went smoothly except that i have client workstations not part of the domain that are not able to access the samba server anymore. The samba server is part of the domain. We recently added Windows 2008 R2 DC. Everything was working smoothly until the CentOS update. If I remember correctly with a Windows 2008 DC you need to use the samba3x packages. Ryan Thanks Ryan. I will try it next weekend and report back to the list. If there is a Samba3X, this is oubiously for something. I was forced to change our DCs to Winblows 2008 and it turned into a big mess here (Samba freaking, DNS instability, Exchange 2010 doing its best to force us upgrading to Outlook 2010, etc etc etc)! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS 5.6 - Samba server + Windows error 233
Hi! I have upgraded my servers yesterday to CentOS 5.6 via yum update. Everything went smoothly except that i have client workstations not part of the domain that are not able to access the samba server anymore. The samba server is part of the domain. We recently added Windows 2008 R2 DC. Everything was working smoothly until the CentOS update. I had a Win7 Workstation that i had success connecting when using the net use command: net use g: \\sambaserver\share /user:domain\username The mapping worked right away and didn't even asked for the password. Normally, before the CentOS upgrade, i'd put \\sambaserver in the UNC line of the Windows Explorer and i'd get a box asking for credentials. Entering domain\username as user and giving the password in the password line was working. Not anymore. I have another XP workstation on another subnet (router wide open) and the mapping with the command line as specified above doesn't even work. For this subnet, i have to use the IP address because the workstations on it use a DNS which isn't aware or active directory (and cannot change this). samba-3.0.33-3.29.el5_6.2 samba-common-3.0.33-3.29.el5_6.2 Here is my smb.conf: === [global] workgroup = DOMAINNAME realm = DOMAINNAME.COM server string = Servername File Server socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 security = ADS encrypt passwords = yes passdb backend = tdbsam password server = * preferred master = No local master = No domain master = No cups options = raw hosts allow = 10.0.2., 10.0.3., 127., 10.0.4.40 pam password change = Yes passwd program = /usr/bin/passwd %u passwd chat = *New*Password* %n\n *Re-enter*new*password*%n\n *Password*changed* username map = /etc/samba/smbusers unix password sync = Yes log level = 1 syslog = 0 log file = /var/log/samba/%m max log size = 50 smb ports = 139 name resolve order = bcast hosts time server = Yes printcap name = CUPS show add printer wizard = No add user script = /usr/sbin/useradd -m '%u' delete user script = /usr/sbin/userdel -r '%u' add group script = /usr/sbin/groupadd '%g' delete group script = /usr/sbin/groupdel '%g' add user to group script = /usr/sbin/usermod -G '%g' '%u' add machine script = /usr/sbin/useradd -s /bin/false -d /tmp '%u' shutdown script = /var/lib/samba/scripts/shutdown.sh abort shutdown script = /sbin/shutdown -c # separate domain and username with '\', like DOMAIN\username winbind separator =+ # use uids from 1 to 2 for domain users idmap uid = 1-2 # use gids from 1 to 2 for domain groups idmap gid = 1-2 # allow enumeration of winbind users and groups winbind enum users = yes [homes] comment = Home Directories read only = No browseable = No writable = yes [Videotheque] comment = Fichiers MPEG2 path = /home/Samba/Videotheque read only = No available = Yes public = Yes writable = yes admin users = domainname+user1,domainname+user2,domainname+user3 TIA, Guy Boisvert ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] IPV4 is nearly depleted, are you ready for IPV6?
Le 2010-12-08 07:41, Steve Clark a écrit : On 12/07/2010 04:31 PM, John R. Dennison wrote: On Tue, Dec 07, 2010 at 11:51:16AM -0500, Brunner, Brian T. wrote: LOL twice, I'll top-post! (I hate M$ Office, but I'm stuck with it) Really? In blatant disregard for the published guidelines for use on this and other centos.org mailing lists? How very sporting of you. http://www.centos.org/modules/tinycontent/index.php?id=16 John Why do we bottom post? People have said so you can read what has been already written before you reply. But all the time people snip out big sections. That IMHO defeats the reason for bottom posting. No IMHO. You snip a text and keep important stuff so people can better understand your answer. With bottom posting, you have the text in the normal read order. I am a tech support engineer and all i can say is that top posting is very irritating, i receive like 400 e-mail a day... Reading long posts reverse is a nightmare. You may have reason to resist bottom posting like using Outlook (which has many default like not respecting anything: Standards, posting order, etc). But that's an entire other story... Guy Boisvert Senior tech support engineer IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Superblock Problem [SOLVED]
Le 2010-07-02 09:35, Guy Boisvert a écrit : Yes i tried to boot with the other kernels, same result. I'll check device.map soon (i'm offsite now). Thanks. Finally, i decided to download the latest CentOS version DVD and do an upgrade. I booted from the DVD, typed linux upgrade and voilà! The server rebooted and worked as expected. Is there anybody on the list that could explain why it happened? Maybe there was a couple of yum update containing kernel updates without reboot. I cannot think for now of anything other than that. Guy Boisvert IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Superblock Problem
Le 2010-07-01 17:32, m.r...@5-cent.us a écrit : cat /mnt/sysimage/boot/grub/menu.lst === #boot=/dev/md0 default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-164.10.1.el5xen) root (hd0,0) kernel /xen.gz-2.6.18-164.10.1.el5 module /vmlinuz-2.6.18-164.10.1.el5xen ro root=/dev/md1 rhgb quiet module /initrd-2.6.18-164.10.1.el5xen.img title CentOS (2.6.18-164.10.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-164.10.1.el5 ro root=/dev/md1 rhgb quiet initrd /initrd-2.6.18-164.10.1.el5.img snip First, have you tried booting with the second one, or do you require xen? Second, I find it odd, since the kernel I have with 5.5 is 2.6.18-194.3.1.el5 (well, the initial install gave me 2.6.18-194.el5, but this was the first upgrade). Finally, it's almost as though grub were not correctly installed - have you checked /boot/grub/device.map? mark Hi Mark, Yes i tried to boot with the other kernels, same result. I'll check device.map soon (i'm offsite now). Thanks. Guy Boisvert IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Superblock Problem
= cylinders of 8 * 512 = 4096 bytes Disk /dev/md3: 2097 MB, 2097348608 bytes 2 heads, 4 sectors/track, 512048 cylinders Units = cylinders of 8 * 512 = 4096 bytes == END fdisk -l == == BEGIN blkid == /dev/md3: TYPE=swap /dev/md0: UUID=085a2fe2-a28b-4c82-aae8-d4711a73f824 TYPE=ext3 /dev/md1: UUID=4e26e66d-b4f3-45e3-8307-e13358b13610 TYPE=ext3 /dev/sdb3: UUID=4e26e66d-b4f3-45e3-8307-e13358b13610 TYPE=ext3 /dev/sdb2: TYPE=swap /dev/sdb1: UUID=085a2fe2-a28b-4c82-aae8-d4711a73f824 TYPE=ext3 /dev/sda3: UUID=4e26e66d-b4f3-45e3-8307-e13358b13610 TYPE=ext3 /dev/sda2: TYPE=swap /dev/sda1: UUID=085a2fe2-a28b-4c82-aae8-d4711a73f824 TYPE=ext3 == END blkid == Tried to boot from different kernels, same result. I searched Google and read something about superblock being repeted to many places on the filesystem but didn't tried anything because of bad explanations and fear of srewing up the partition. I already backed up the important stuff to another server. I'd like to know if it's possible to fix that problem quickly, if not i'll re-install it. But i'd like to know the fix anyway so if it appends again, would know what to do! Thanks! Guy Boisvert IngTegration inc. -- Guy Boisvert, ing. IngTegration inc. http://www.ingtegration.com AVIS DE CONFIDENTIALITÉ : ce message peut contenir des renseignements confidentiels appartenant exclusivement à IngTegration Inc. ou à ses filiales. Si vous n'êtes pas le destinataire indiqué ou prévu dans ce message (ou responsable de livrer ce message à la personne indiquée ou prévue) ou si vous pensez que ce message vous a été adressé par erreur, vous ne pouvez pas utiliser ou reproduire ce message, ni le livrer à quelqu'un d'autre. Dans ce cas, vous devez le détruire et vous êtes prié d'avertir l'expéditeur en répondant au courriel. CONFIDENTIALITY NOTICE : Proprietary/Confidential Information belonging to IngTegration Inc. and its affiliates may be contained in this message. If you are not a recipient indicated or intended in this message (or responsible for delivery of this message to such person), or you think for any reason that this message may have been addressed to you in error, you may not use or copy or deliver this message to anyone else. In such case, you should destroy this message and are asked to notify the sender by reply email. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] NMS Opinions
Brendan Minish wrote: On Tue, 2009-12-22 at 02:36 +, Joseph L. Casale wrote: Take a look at zenoss too, I am in the process of deploying it as a replacement for a rather elderly and under-resourced Nagios server Liking it a lot so far http://www.zenoss.com/ there's good help on IRC too freenode #zenoss regards Brendan I don't know now but i couldn't define relations manually about 2 years ago. It was a major PITA as if a router fails, you don't want to get 500 alarms for all the devices behind it. It was supposed to auto discover and do relationship by itself but wasn't able to do it properly with our network: Many VLANs and router / firewall using trunking, etc. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Samba, ADS Winbind Separator on CentOS 5.4
Hi! I have a little problem with Samba. I have an ADS integrated CentOS 5.4 server. I had frequent access problem when M$ users create directories and files. So i thought to force users' persmissions by way of the force user parameter in smb.conf. First problem is that the forced users i want to apply are ADS users and named like MYDOMAIN#Joe in passwd file. When i use this name in smb.conf, i get this error when i run testparm: ERROR: the 'winbind separator' parameter must be a single character., even if i used winbind separator =#. If i use winbind separator =\ and name my users like MYDOMAIN\Joe in smb.conf, i have no error but users cannot access the share. Actually, i know that # is sometimes used for comments on the config file and \ is sometimes used to escape characters. Now, what should i do to fix the problem? Change Winbind config to use another character? Use some kind of escaped character in smb.conf? I'm a little lost! Thanks! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Docx format ?
John R Pierce wrote: m.r...@5-cent.us wrote: Yep, as well as .xlsx But, I mean, you know all the *pressing* and Important reasons that M$ had to change the file format FWIW, the new formats are XML based, albeit compressed. in most theories, this is a good idea for portability. the old file formats were proprietary, complex and full of ugliness from 20 years of extensions and variations (.DOC was used by MS Word for MSDOS circa 1985). Yes, I know, MS did their own XML 'open' document format, not the one everyone else is using, but at least being XML, its readily decodable. Sorry but M$ supposedly open format isn't. If M$ would have wanted to be really Open, it would have chosen ODF or develop OOXML in an open manner... I have many clients that lived the Office nightmare where the Office versions are not able to perfectly render files between them, where the compatibility plugins don't translate 100%, etc. All that to force clients to buy new version of Office, the Admiral Ship of M$. This is the spread like a virus and bug the others method... New PCs of my clients were sold with Office 2007 while the older PCs had 2003. Technical documents were loosing formatting, no matter what we tried. We called M$ and we were told to call Dell because Office was OEM. We call Dell and they said to call M$... Finally, Dell was forced to do something but they said they would do something they're not supposed: Sell us Office 2007 OEM for the older PCs... But still, it doesn't cure the problem with our 2500 technical spec sheets that were done with Office 2007... I pushed a lot for my clients to adopt Open Office but they told me it isn't standard and that they would't be able to work with other companies that, in majority, were using standard M$ Office!!! So here we have FUD, misundertanding of the word standard and users that freak out because they don't know Open Office... M$ and users at their best... See: http://www.freesoftwaremagazine.com/articles/odf_ooxml_technical_white_paper (there is a link for the PDF version on top of this article: http://www.freesoftwaremagazine.com/node/2138/pdf) GB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] SVN hell!
Hi! I'm trying to install SVN on a latest version of CentOS (5.3). I just did: yum install subversion yum install mod_dav_svn Then i edited /etc/httpd/conf.d/subversion.conf and here is the content: Location /svn DAV svn SVNParentPath /var/www/svn # Limit write permission to list of valid users. LimitExcept GET PROPFIND OPTIONS REPORT # Require SSL connection for password protection. # SSLRequireSSL AuthType Basic AuthName SVN 1 AuthUserFile /etc/svn/svn-auth-conf Require valid-user /LimitExcept /Location After, i did: = mkdir -p //var/www/svn/applitv svnadmin create /var/www/svn/applitv svn mkdir file://localhost/var/www/svn/applitv/trunk -m create svn mkdir file://localhost/var/www/svn/applitv/branches -m create svn mkdir file://localhost/var/www/svn/applitv/tags -m create chown -R apache:apache /var/www/svn Finally, i created the AUTH file: = htpasswd -cm /etc/svn/svn-auth-conf user1 htpasswd -m /etc/svn/svn-auth-conf user2 I use the following URL to connect to the server: = http://10.0.4.32/svn/applitv And i receive the following response: = This XML file does not appear to have any style information associated with it. The document tree is shown below. − D:error C:error/ m:human-readable errcode=13 Could not open the requested SVN filesystem /m:human-readable /D:error In the log /etc/httpd/conf.d/subversion.conf, i have: = [Sun Oct 11 15:48:39 2009] [error] [client 10.0.2.98] (20014)Internal error: Can't open file '/var/www/svn/applitv/format': Permission denied [Sun Oct 11 15:48:39 2009] [error] [client 10.0.2.98] Could not fetch resource information. [500, #0] [Sun Oct 11 15:48:39 2009] [error] [client 10.0.2.98] Could not open the requested SVN filesystem [500, #13] [Sun Oct 11 15:48:39 2009] [error] [client 10.0.2.98] Could not open the requested SVN filesystem [500, #13] [Sun Oct 11 15:48:39 2009] [error] [client 10.0.2.98] Could not fetch resource information. [403, #0] [Sun Oct 11 15:48:39 2009] [error] [client 10.0.2.98] (2)No such file or directory: The URI does not contain the name of a repository. [403, #190001] What i find very strange is this: = [r...@svn mnt]# ll /var/www/svn/applitv/format -r--r--r-- 1 apache apache 2 Oct 11 11:40 /var/www/svn/applitv/format The format file (which contains the value 5) is readable. I searched a lot on Google but i still can't figure out what's going on. Any help would be appreciated! MISC INFOS: === [r...@svn www]# uname -a Linux svn.[removed].com 2.6.18-164.el5xen #1 SMP Thu Sep 3 04:47:32 EDT 2009 i686 athlon i386 GNU/Linux (Guest running under Xen CentOS X64 Host) [r...@svn www]# cat /etc/issue CentOS release 5.3 (Final) httpd-2.2.3-22.el5.centos.2 mod_dav_svn-1.4.2-4.el5_3.1 Thanks! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SVN hell!
Ian Wilson wrote: Hi Guy; On Sun, Oct 11, 2009 at 5:41 PM, Guy Boisvert boisvert@videotron.ca wrote: What i find very strange is this: = [r...@svn mnt]# ll /var/www/svn/applitv/format -r--r--r-- 1 apache apache 2 Oct 11 11:40 /var/www/svn/applitv/format Do you have SELinux enabled? Also, what are the permissions on the underlying directory (/var/www/svn/applitv) Also, I would recommend updating the version of your subversion and mod_dav_svn that's currently installed; there was a security vulnerability that could result in some nastyness (details at: http://freshmeat.net/articles/red-hat-updated-subversion-packages-fix-multiple-security-issues ) Ian [r...@svn ~]# cat /selinux/enforce 0 [r...@svn ~]# So it's permissive mode (0). I checked that before posting! Thanks for your hint anyway. As for updating subversion and mod_dav_svn, i have the latest versions from CentOS repositories and this server is only for internal use so i don't think i'll do it for now. Thanks again for the hint. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SVN hell!
Clint Dilks wrote: Hi, There have still situations where permissive mode is not the same as disabled. I suggest that you try disabling to see if the the behavior is different. vim /etc/selinux/config == SELINUX=disabled Rebooted, then same result: === (Firefox: http://10.0.4.32/svn/applitv) This XML file does not appear to have any style information associated with it. The document tree is shown below. − D:error C:error/ m:human-readable errcode=13 Could not open the requested SVN filesystem /m:human-readable /D:error [r...@svn ~]# tail -6 /var/log/httpd/error_log [Sun Oct 11 18:56:26 2009] [error] [client 10.0.2.4] (20014)Internal error: Can't open file '/var/www/svn/applitv/format': Permission denied [Sun Oct 11 18:56:26 2009] [error] [client 10.0.2.4] Could not fetch resource information. [500, #0] [Sun Oct 11 18:56:26 2009] [error] [client 10.0.2.4] Could not open the requested SVN filesystem [500, #13] [Sun Oct 11 18:56:26 2009] [error] [client 10.0.2.4] Could not open the requested SVN filesystem [500, #13] [Sun Oct 11 18:56:26 2009] [error] [client 10.0.2.4] File does not exist: /var/www/html/favicon.ico [Sun Oct 11 18:56:29 2009] [error] [client 10.0.2.4] File does not exist: /var/www/html/favicon.ico [r...@svn ~]# ll /var/www/svn/applitv total 56 drwxr-xr-x 2 apache apache 4096 Oct 11 11:58 conf drwxr-xr-x 2 apache apache 4096 Oct 11 11:40 dav drwxr-sr-x 5 apache apache 4096 Oct 11 11:40 db -r--r--r-- 1 apache apache2 Oct 11 11:40 format drwxr-xr-x 2 apache apache 4096 Oct 11 11:40 hooks drwxr-xr-x 2 apache apache 4096 Oct 11 11:40 locks -rw-r--r-- 1 apache apache 229 Oct 11 11:40 README.txt [r...@svn ~]# ll /var/www/svn total 16 drwxr-xr-x 7 apache apache 4096 Oct 11 11:40 applitv drw-rw-r-- 7 apache apache 4096 Oct 11 10:31 repos So i'm stumped! Maybe i'll have to use the advice from Les Mikesell Ian Wilson and configure SourceForge... Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SVN hell! [RESOLVED]
Peter Hinse wrote: Am 12.10.09 01:05, schrieb Guy Boisvert: [r...@svn ~]# ll /var/www/svn total 16 drwxr-xr-x 7 apache apache 4096 Oct 11 11:40 applitv drw-rw-r-- 7 apache apache 4096 Oct 11 10:31 repos My repos directory has permissions 0750 - try to change into each directory as user apache und touch files there as suggested by Ian. Peter. Bingo! You were right on it Peter! Thanks! I dunno why i didn't see it before but /var/www/svn was 0550... There are days like that, where it's like you can't see your noze in your own face... Apologies to the list for all this and thanks to everybody that helped me. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Testing and monitoring hardware RAID
Dianne Yumul wrote: I checked the Adaptec site again and found a link to the Adaptec Storage Manager. I don't know how I missed that, thanks for the push in the right direction. Hopefully it works. Thanks, dianne Hi, I use the Adaptec Storage manager under CentOS 5 (with Adaptec 3405 HBA). It seems to be decent (functionality wise) but i saw that it works under Java... My deception was great when i saw that. I had numerous problems with Java and management tools on the past. I just hope i wont't have to fight with Java all over again... Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dual-boot with WinXP, CentOS already installed
Sorin Srbu wrote: Isn't reinstalling GAG the same thing as reinstalling grub. What's the incentive so to speak? Is GAG so much better, or just easier to work with than grub? Easier. GAG has its own boot media (diskette or cd). It has a graphical interface and is very easy. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dual-boot with WinXP, CentOS already installed
Toby Bluhm wrote: Kai Schaetzl wrote: Sorin Srbu wrote on Fri, 17 Apr 2009 09:37:53 +0200: How do you mean broken? Sorin, why do you think I replied to you? The person using the broken configuration is David G. Miller. I didn't know who you were talking about either. It's good to point out the problem, but maybe next time leave some text clue as to whom you are referring. Yeah, i second that. I was wondering if you were talking about me because i use TBird too... Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dual-boot with WinXP, CentOS already installed
Kai Schaetzl wrote: Sorin Srbu wrote on Thu, 16 Apr 2009 14:08:57 +0200: Basically, what would I need to change in the how-to from apcmag.com above?? It's like that tutorial says. Forget about backing up grub.conf. This is nonsense. You want to make a backup before changing it, just in case, but not because of the XP installation. After the installation you have to reinstall grub with grub-install (from a live disk) and add the chainloader stuff to grub.conf. mount /dev/sda2 /mnt/linux (if that is where you linux resides) grub-install --root-directory=/mnt/linux /dev/sda (if you want to install it to the partition use sda2 instead of sda, then the partition has to be active, so that you can boot from it) Instead of using grub-install you can backup the mbr before the installation and then restore it afterwards. You can easily get bad results from that if you mistype, though. Kai When i install multi-boot machines, i prefer to use GAG boot manager. http://gag.sourceforge.net/ It installs itself on the MBR (it's tiny) and all you have to do is tell Linux to install its boot stuff on its own partition. As for Winblows, it always wipes the boot record and replace with its own crap. No problem, let Winblows install itself and after everything is done, just re-install GAG, configure the menu items and you're all set. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dual-boot with WinXP, CentOS already installed
Kai Schaetzl wrote: Sorin Srbu wrote on Thu, 16 Apr 2009 14:08:57 +0200: Basically, what would I need to change in the how-to from apcmag.com above?? It's like that tutorial says. Forget about backing up grub.conf. This is nonsense. You want to make a backup before changing it, just in case, but not because of the XP installation. After the installation you have to reinstall grub with grub-install (from a live disk) and add the chainloader stuff to grub.conf. mount /dev/sda2 /mnt/linux (if that is where you linux resides) grub-install --root-directory=/mnt/linux /dev/sda (if you want to install it to the partition use sda2 instead of sda, then the partition has to be active, so that you can boot from it) Instead of using grub-install you can backup the mbr before the installation and then restore it afterwards. You can easily get bad results from that if you mistype, though. Kai When i install multi-boot machines, i prefer to use GAG boot manager. http://gag.sourceforge.net/ It installs itself on the MBR (it's tiny) and all you have to do is tell Linux to install its boot stuff on its own partition. As for Winblows, it always wipes the boot record and replace with its own crap. No problem, let Winblows install itself and after everything is done, just re-install GAG, configure the menu items and you're all set. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dual-boot with WinXP, CentOS already installed
David G. Miller wrote: Sorin Srbu sorin.s...@orgfarm.uu.se wrote: The problem with suggestions to just install Windows and then either use another boot loader or repair the grub installation is that you are stuck doing that work through Windows. GAG is a standalone boot disquette / boot CD. It doesn't need Winblows or anything eles. It just installs itself on MBR and the boot media contain the config utility with the write to MBR function. You just have to instruct Linux to put all its stuff to its partition. I'm not very familiar with all the Linux boot stuff, so i can't comment on how to do it for somebody that had Linux installed first. I'm sure somebody on the list can give us infos about it and using GAG on MBR afterward. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dual-boot with WinXP, CentOS already installed
Toby Bluhm wrote: David G. Miller wrote: I installed Win7 beta on the open partition at the end of my laptop disk and had to dd restore the mbr so I could boot to Centos again. It's amazing that after all these years of multi-booting PCs, MS still arrogantly stomps all over your setup. Idiots. Winblows tries to do its best not to ask anything to the user and decide by itself. No wonder why tons of worms are spreading under Winblows! One have to say that a large part of this is due to bad design but trying to do everything in place of average Joe is wrong. And everybody know how arrogant M$ can be! I just hope they continue to produce ultra heavy crap like Vista! Majority of my clients refuse to go Vista, thanks Macro$haft! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] USB, AutoMount VNC
Frank Thommen wrote: Guy Boisvert wrote: Hi, It make senses if you're running a box headless (it will be headless soon, now i'm testing it with K+V+M attached). We're using a CentOS box to plug USB Flash drive external hard drive into it. The CentOS box is then used to FTP the content of these external drives to a Winblows box, all that filtered by a firewall between the 2 boxes. Only FTP is allowed. Doing some tests on the CentOS box, i saw that if i log into the console, then the local session and the remote VNC sessions will see the drives automounted. If i log out of the console, then the VNC session won't see anything. It's like the automount works only if somebody is logged at the console. I assume that with console you mean X11/desktop manager. In this case Gnome or KDE handle the mounting of removable devices for you. The automounter hasn't anything to do with it. Yes, X11/DM, logged locally on the physical console. Thanks for the hint on automount. If you want the automounter to handle removable devices, then you'll have to add appropriate automounter map entries. Something like /etc/auto.master: /media /etc/auto.media /etc/auto.media: usb:/dev/sda1 or you could use a program map like the following (not my invention, I took this from the autofs mailing list): - #!/bin/sh if ntfs-3g.probe /dev/sda1; then echo -fstype=ntfs-3g,other-opts :/dev/sda1 else echo -fstype=vfat,other-opts :/dev/sda1 fi - You'll probably find other examples on the net. I'm not sure if such an automounter setup collides with Gnome/KDE automounting. Cheers frank Thanks for your help Frank. The problem i have is that it won't necessarily be the same devices plugged to this box and the user could even plug many devices at the same time. So i read many articles on the net but i'm kinda lost about where to start for this problem. Anyway, i'm still reading an thanks again for your help! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] USB, AutoMount VNC
Hi! I'm trying to figure out how to make automount do its job when nobody is logged at the console and the user access the server by VNC. Does anybody knows how to make CentOS automount USB Hard Drives / Pendrive when accessed by VNC? Thanks! Guy Boisvert, ing IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] USB, AutoMount VNC
MHR wrote: On Fri, Mar 27, 2009 at 6:35 AM, Guy Boisvert boisvert@videotron.ca wrote: Hi! I'm trying to figure out how to make automount do its job when nobody is logged at the console and the user access the server by VNC. Does anybody knows how to make CentOS automount USB Hard Drives / Pendrive when accessed by VNC? Could you describe the problem a little more clearly? Separation of console from USB-accessible hardware, how VNC fits in in this scenario, etc. It sounds like someone wants to log in remotely (VNC), plug in a (local) USB device and access it (remotely), which doesn't make sense to me. Thanks. mhr ___ Hi, It make senses if you're running a box headless (it will be headless soon, now i'm testing it with K+V+M attached). We're using a CentOS box to plug USB Flash drive external hard drive into it. The CentOS box is then used to FTP the content of these external drives to a Winblows box, all that filtered by a firewall between the 2 boxes. Only FTP is allowed. Doing some tests on the CentOS box, i saw that if i log into the console, then the local session and the remote VNC sessions will see the drives automounted. If i log out of the console, then the VNC session won't see anything. It's like the automount works only if somebody is logged at the console. Hope i was clearer. Thanks! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Streaming video with Centos 5.2...how to?
Thiago Avelino wrote: VLS = http://www.videolan.org/doc/streaming-howto/en/ 2009/3/17 Gilbert Sebenste seben...@weather.admin.niu.edu: Hello all, I am a noob to streaming video, and I have a file I'd like to stream (a .wmv file...sorry. ;-) ). In any case, how can I do this on my website using Centos 5.2 and Apache 2.2.8, rather than making people download a 20 MB video? Can someone point me to some URL's and some software? Thanks for any help, I greatly appreciate it! Gilbert Thiago, i'm asking you kindly to refrain from top posting! Thanks! http://www.centos.org/modules/tinycontent/index.php?id=16 http://www.caliburn.nl/topposting.html For the OP, do you want live streaming or on demand? For On Demand, we use Darwin Streaming Server (Open Source) on CentOS. We encode/re-encode our files in MP4. The server is able to stream MP3 too. For Live streaming, we use (alas..) Winblows WME (Winblows2003). We take our live feed in SDI and feed it into an Osprey 560 card. For me, i'd like to go further and replace the WME server by something that would run on CentOS. Presently, we push 4 streams: 1 low res, 1 medium res, 1 High res and 1 audio only. The problem we have (apart from being Winblows...) is that the damn Micro$loth stuff is a nightmare to administer. No remote status, binary logs, etc! I checked VLC and it is a very good piece of software but i'm not sure it would fit the bill in the above scenario. I'd like to have statistics, remote control, SNMP trap in case of problem, etc. As for compression, we need something easy for our clients that are just standard users with about no computer knowledge. That means that the stream should use a format that is supported right out of the box or easily added. Unfortunately, majority of clients are using Winblows... I heard about Flash Streaming but still didn't find anything that would run on Linux (as a streaming server). Does anybody knows something that would do using CentOS ? Any good idea will be appreciated ! Thanks! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Programming ressources
Hi! It may be a little OT but i'm searching for a c/c++ programmer for the development of a remote controlled multimedia player that would run under CentOS with Aja OEM card. We'd use this player in our fully automatic TV broadcast system. We currently have a player (developed in house) that works mostly ok on Winblows but it lacks many features like remote monitoring (SNMP or something like that), fault management, etc. The code is not documented and there are problems migrating from Stradis SDM-275 card to SDM-290, from Win2000 to XP, etc. I was thinking that their should be programmers on the CentOS mailing list. Sorry if i bother other list members with my request. We are based in Montréal, Province of Quebec, Canada. Frankly, we have to find a Winblows programmer first to evaluate the documentationless code we have for our current player. With the obligation to go digital and the fact that we may even have to go HD, we'll want to go Linux and get an ultra-stable platform. It would be nice to evaluate if something like VLC or MPLayer could provide the functionality we want too. If there is some project/job/project site, please let me know. Please respond offlist. I'll make a resumé of what i found for the list if there is interest for that. Regards, Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] FTPS setup problem
John wrote: Why are they not using using Dreamweaver to access the ftp site??? This can be done! Look at the top menus, Sites | Manage Sites | New | FTP or RDP | Then Choose SFTP in the Dropdown Box |. JohnStanley Hi John, I'd certainly like to but i am at the config/testing stage! If i can't validate vsftpd working ok with SSL/TLS, i won't tell my client to try to connect with DreamWeaver. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] FTPS setup problem
John wrote: He's testing it. Access with Dreamweaver may indeed work. Ahh, DW will connect to my my ftp machine but I don't know about sftp. To me it is just easier to use DW or Visual Studio internal ftp tools to manage a site easier. I will try his config later on just to check it outwith DW. JohnStanley ... and SFTP is not the same as FTPS. Actually, i tried with FileZilla (it seems to have an official bug with vsftpd and FTPS) and SmartFTP and both had problems. So that's why i asked the question to the list. I dunno if i have something wrong with the config, or any other subtility. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] FTPS setup problem
Kai Schaetzl wrote: I threw that configuration you posted on a working vsftpd (working without SSL) on CentOS 5 and can only confirm that it doesn't work. One obvious problem is port 990 as ftps wants to connect via port 990. In Filezilla you can choose to use FTPES which seems to connect to port 21 and force an SSL auth. This actually works as you get the certificate displayed to accept it and you can login. However, the directory listing fails. I tried changing to active, disallowing certain protocols etc. It all fails at the same stage. The link posted (http://bugs.proftpd.org/show_bug.cgi?id=3094) seems to apply exactly to this situation. So, you simply will not be able to work with a newer Filezilla client against a vsftpd server without this patch. Status: Connecting to 192.168.1.232:21... Status: Connection established, waiting for welcome message... Response: 220 FTP Command:AUTH TLS Response: 234 Proceed with negotiation. Status: Initializing TLS... Status: Verifying certificate... Command:USER kai Status: TLS/SSL connection established. Response: 331 Please specify the password. Command:PASS Response: 230 Login successful. Command:SYST Response: 215 UNIX Type: L8 Command:FEAT Response: 211-Features: Response:AUTH SSL Response:AUTH TLS Response:EPRT Response:EPSV Response:MDTM Response:PASV Response:PBSZ Response:PROT Response:REST STREAM Response:SIZE Response:TVFS Response: 211 End Command:PBSZ 0 Response: 200 PBSZ set to 0. Command:PROT P Response: 200 PROT now Private. Status: Connected Status: Retrieving directory listing... Command:PWD Response: 257 / Command:TYPE I Response: 200 Switching to Binary mode. Command:PASV Response: 227 Entering Passive Mode (192,168,1,232,75,253) Command:LIST Response: 150 Here comes the directory listing. Status: Server did not properly shut down TLS connection Error: Transfer connection interrupted: ECONNABORTED - Connection aborted Response: 226 Directory send OK. Error: Failed to retrieve directory listing Kai Hi Kai, Thanks for your input. I had problem with SmartFTP too which was supposed to work with this setup. Then, i don't know if i should report a bug... It's just too bad i can't make this work... Ragards, Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] FTPS setup problem
Hi! I'm trying to figure out what's going wrong with a simple FTPS setup and VSFTPD. I saw references on Google and tried, and tried, and tried... without success. I'll start by explaining my situation: I have a WEB development server behind a firewall. It's currently only for the intranet. We now have an external company that will have to do a new website for us and we want them to access securely our development server. Internally, we access it with regular FTP (we use DreamWeaver 8). In the references i saw, i'd just add the following lines and it is supposed to work: ssl_enable=YES allow_anon_ssl=NO force_local_data_ssl=NO force_local_logins_ssl=NO ssl_tlsv1=YES ssl_sslv2=YES ssl_sslv3=NO rsa_cert_file=/etc/vsftpd/vsftpd.pem Here are the previous lines in my vsftpd config: anonymous_enable=YES local_enable=YES write_enable=YES local_umask=022 dirmessage_enable=YES xferlog_enable=YES connect_from_port_20=YES xferlog_std_format=YES chroot_local_user=YES chroot_list_enable=YES chroot_list_file=/etc/vsftpd/vsftpd.chroot_list pam_service_name=vsftpd userlist_enable=YES listen=YES tcp_wrappers=YES I generated the PEM cert with the following command: openssl req -x509 -nodes -days 365 -newkey rsa:1024 -keyout /etc/vsftpd/vsftpd.pem -out /etc/vsftpd/vsftpd.pem I tried to connect with FileZilla without luck. I heard that FileZilla may have a problem with vsftpd in FTPS mode so i downloaded SmartFTP which i read should be able to connect. When i try, i get this error message: SSL/TLS client handshake failed (Error = 0x80090308) Does anybody could give me a pointer on this? Thanks in advance and happy holidays to everybody! Guy Boisvert, ing IngTegration inc. ___ Pre-Boxing Day Domain Sales: Hosting + Domain = US$4.95/year Offer Ends: Dec 31, 2008.http://www.doteasypromo.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] FTPS setup problem
Bill Campbell wrote: On Fri, Dec 19, 2008, Guy Boisvert wrote: Hi! I'm trying to figure out what's going wrong with a simple FTPS setup and VSFTPD. I saw references on Google and tried, and tried, and tried... without success. I'll start by explaining my situation: I have a WEB development server behind a firewall. It's currently only for the intranet. We now have an external company that will have to do a new website for us and we want them to access securely our development server. Internally, we access it with regular FTP (we use DreamWeaver 8). In the references i saw, i'd just add the following lines and it is supposed to work: As a rule, we require external developers to access our servers using OpenVPN which provides a simple means of getting secure access without having to deal with multiple server components. The OpenVPN clients for Windows and OS X are simple to set up, well within the capabilities of the average web developer (which often aren't extensive :-). Bill Hi Bill, It is a very good idea but i can't force them to use it. The WEB Developpers are inside an University and i heard that it's complicated to make the IT staff add some stuff like that. FTPS is supposed to be directly supported by DreamWeaver, so that why am asking about it. Thanks! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] FTPS setup problem
Bob Hoffman wrote: When i try, i get this error message: SSL/TLS client handshake failed (Error = 0x80090308) Does anybody could give me a pointer on this? I really hope you post the end fulfillment of this problem as I want to do ssl with my vsftp and have not gotten around to it. Have you tried just restarting vsftp? I also find that I had to play with the user list allow/deny to get mine to work right. Can you, if you take out the ssl stuff, access it via ftp normally? Hi Bob, Just to put all this in perspective, i'm not a green on CentOS and i restarted vsftpd each time i modified my test server (it's very ok that you asked!). I don't consider myself an expert but i'm pretty confortable with CentOS. I can reach easily the server by regular FTP, check my previously posted config file and you'll see that i don't force local users to use SSL. For the remote users, i'll redirect port 990 on our firewall to port 21 on the server. I read that vsftpd can't use different ports for regular FTP and FTPS so i let it be on port 21, which we use internally. Thanks! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] FTPS setup problem
Ray Van Dolson wrote: To the OP (sorry, jumping into a lot of threads late); what version of vsftpd are you using? A few months back FileZilla released a new version that broke TLS/SSL support with a number of FTP servers. I ran into the problem with ProFTPD specifically: http://bugs.proftpd.org/show_bug.cgi?id=3094 But vsftpd had this issue as well and was patched in v 2.0.7. I don't know if this fix was backported by RH or not I also don't know if SmartFTP client would exhibit the same problem. You could try an older version of FileZilla ( 3.1.0) to see if it works correctly... Ray Hi Ray, Here are the infos: vsftpd-2.0.1-6.el4 Linux [server name] 2.6.9-78.0.8.EL #1 Wed Nov 19 19:43:32 EST 2008 i686 i686 i386 GNU/Linux CentOS release 4.7 (Final) I'll try older FileZilla and report back as soon as i find a solution. Thanks for your help! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] FTPS setup problem
Alain Reguera Delgado wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Guy Boisvert wrote: Hi! I'm trying to figure out what's going wrong with a simple FTPS setup and VSFTPD. ... When i try, i get this error message: SSL/TLS client handshake failed (Error = 0x80090308) How are you trying to connect ? What is the address you are referring to access ? Can you use lftp with debug 9 and post the output ? As i said, i'm trying to connect in FTPS mode with FileZilla and SmartFTP to port 21 at the address of my server! Does anybody could give me a pointer on this? please, take a lookt at: http://wiki.centos.org/HowTos/Chroot_Vsftpd_with_non-system_users I would like to hear if this is useful to you. Best Regards, This link is interesting but the problem is not that i don't want to use local users. I have no problem with that. That's the SSL/TLS handshake error that i don't figure out. Thanks! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] FTPS setup problem
John R Pierce wrote: I don't know if you can do that with FTPS...FTP uses a seperate dynamic port for the data socket, and the mode this port is assigned is at the whim of the *client* software, it can either be PORT or PASSIVE mode, this makes NAT address translation of FTP a real mess.AFAIK, FTPS (ftp over ssl) does much the same. I quote from Wikipedia... The firewall problem Because FTP http://en.wikipedia.org/wiki/File_Transfer_Protocol is a [...] cannot decrypt it). Therefore, in many firewalled networks, clear FTP connections will work while FTPS connections will either completely fail or require the use of passive mode (assuming all ports = 1024 to the server are unfiltered). Well John, i can't even get it working locally on the same subnet (and no, the server doesn't use firewalling)! I'm not even at the firewall access level! Thanks for the pointer anyway. Regards, Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] FTPS setup problem
John R Pierce wrote: Guy Boisvert wrote: FTPS is supposed to be directly supported by DreamWeaver, so that why am asking about it. does Dreamweaver support WebDAV over HTTPS as an update method? this would be a LOT EASIER to get working behind a firewall if they can access your website with https/ssl, and you can get mod_dav working, you're in business. Ok, i'll check that. I still focus on FTPS for now but i'll have a look a WebDAV/HTTPS. Thanks! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] regarding vpn server for 1500 clients
John R Pierce wrote: NiftyClusters T Mitchell wrote It is possible that dedicated Cisco hardware solutions will scale better. At a minimum they can set a cost base line to validate the value of your Linux solution. Management of clients needs to be expanded. for large scale VPN networks like that, I'd evalulate the Juniper/Netscreen stuff before I'd go Cisco. Ah yeah? Could you tell us why you'd go Juniper before Cisco? Not that i don't like Juniper, i'm just curious about the reason(s) you said that. Guy Boisvert, ing. IngTegration inc. ___ Pre-Boxing Day Domain Sales: Hosting + Domain = US$4.95/year Offer Ends: Dec 31, 2008.http://www.doteasypromo.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] how to connect to a switch with a serial cable? - what command(s) to use?
Rudi Ahlers wrote: Hi all, I see one of our switches doesn't want to respond to HTTPS or SSH commands, and I know it's connected to a server via a serial cable. I'm 3 hours drive from that server at the moment, so how can I connect to it from the Linux server, via SSH? Hi Rudi, First, what brand / model of switch is it? Cisco? HP? Cisco HP support: - Serial Connection - Telnet - Web - SSH But be aware that supported connection type varies from model to model and with firmware version / config. For example, on Cisco switches, you won't get SSH if it's not configured properly. On Cisco, serial is always enable out of the box so you can configure it. It takes their blue cable (their are models with the black one too) and default serial settings are 9600,8,n,1. Hope this helps. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] how to connect to a switch with a serial cable? - what command(s) to use?
Rudi Ahlers wrote: Hi all, I see one of our switches doesn't want to respond to HTTPS or SSH commands, and I know it's connected to a server via a serial cable. I'm 3 hours drive from that server at the moment, so how can I connect to it from the Linux server, via SSH? As a complement of infos on Cisco: http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a008010ff7a.shtml Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [Centos] Promise EX16650 under 5.2?
Karanbir Singh wrote: Guy Boisvert wrote: ... and we have many problems with that approach which most of the time uses Java. I've never seen one that did use java, having used the proxy's for Areca, 3ware, adaptec and MSI. I have many servers in production (mostly Winblows boxes, i know it's bad but it's not my choice!) that have 2-3 of these bad admin apps and we have many compatibility problems. Get a proper raid card ? - KB I'm totally with you Karanbir! I mean, i'm a consultant and i have to live with things i didn't chose! I'd like to change many hardware at my client's offices but sometimes, the budget is just not there. SMBs are not always up to understand TCO, ROI, etc. I do my best but sometimes, it's difficult! The guy was talking about Promise and that was the reason i tried to warn him about their bad management app and so-so support. That's it! Regards, Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] how can I stress a server?
Rudi Ahlers wrote: John, just cause the machines we use to serve web content to our clients doesn't use the grade of equipment you prefer to use, and can afford, doesn't mean equipment that other people use is inferior, or worthless. I have a problem with one of my machines, and have narrowed down that it could either be the CPU, RAM or motherboard, but before I take it back to the suppliers, I need to know what is wrong. They will switch it on, and see that it works. But it's not taking the load that I expect it could. In fact, it's not taking the same load as a machine with a Intel E6750 Core 2 Duo 4GB RAM. This server should be 2 - 4 times faster handle 2 - 4 times the load of the E6750, yet it doesn't and I need to know why. I don't appreciate being told that the hardware I have if inferior. Hi Rudy, John is a veteran on this list and you could probably learn many things from him. I suggest you read: http://www.mit.edu/~jcb/tact.html (that could maybe explain why you seemed irritated by John!) By the way, server grade hardware is just that: Meant to serv and include specific features for that particular kind of job. That doesn't mean that a workstation board won't be able to do a server job at all. Having said that, i manage servers since a long time and i can assure you that using serious server hardware with ECC translates in lower costs in the long run. Sure you can still have problems with server grade hardware! But then, we could try to obtain statistics and MTBF to get a better idea. But i find ECC error indicator to be invaluable and there a many other features that will help to pinpoint problems rapidly. So Rudy, i can understand that you may have hardware problems and probably pressure to solve them but IMHO, it's just a classic example of TCO. And i read that you had problems with Dell servers, then try something else! It's OT but can say that i have many Tyan and HP servers in production and no problem at all. Hope you'll solve your problem. Regards, Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] how can I stress a server?
Rudi Ahlers wrote: John, I know what ECC does. I have 2 Dell PE860 servers with 8GB ECC DDRII RAM as well, and they're both giving RAM problems. I had top swap-out the RAM 2 times with the suppliers already, and swapped out a motherboard on the one of the servers. Honestly, ECC isn't my favourate to use. Wow! Everybody doing serious business wouldn't go without it (i work for a couple of Banks and government agencies), but that's your choice and i respect that. But if you want to talk about five 9's, then you'd surely go with ECC and other invaluable features like watchdog timer, management cards, BIOS serial redirection, chip kill, etc. It all depend on your needs i agree but don't reject server grade hardware so easily! At the same time, I have about 8 servers with cheap Gigabyte motherboards and non-ECC RAM, which have been running for close to 4 years now, without any hickups at all. That's bad stats. It's not because my neighbour has a problem with his Mercedes and that i have no problem with my 4 Hyundai that Hyundai are better than Mercedes!!! Not only that, but sitting 6 adults in a mini Hyundai may be possible but we'll be much more confortable in the big Mercedes! Know what i mean? It's the first time I try the Intel board, since it's supposed to be a step-up from the desktop boards, and has 4 memory slots as apposed to only 2. ... and limited by the fanout of the CPU / Chipset... As you put more memory, you'll have to relax timing and use proper memory brand that is certified for the mainboard. The server had the same problems when I only had 4GBM RAM (2 slots used 2 slots open), so I don't think that the capacitive load is the problem here. Right now the server is still at the datacentre - which is 2 hours drive there back with traffic, so I'm going to get it later today / tonight, as soon as I've moved all the data across to the slower gigabyte server, and then I can try the RAM timings thing in the BIOS. This could be a chipset problem, bad power supply, and the list goes on. But, how can I put a LOT of load onto it, and see what's causing the problem? For all I know, the motherboard could be faulty, or the CPU, or maybe even the SATA bus? Putting high load without having hardware monitoring won't tell you much IMHO. I'd first test the power supply. Then remove everything you can and test with Memtest86+ (let's say, overnight, and while you're at it watch the power supply under load). Swap memory with some you know is good. If the problem persist, you could possibly have a chipset problem. Good luck. Guy Boisvert, ing IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [Centos] Promise EX16650 under 5.2?
Karanbir Singh wrote: Gordon McLellan wrote: Does anyone have experience using the Supertrak EX16650 sas controller under Centos 5.2? Do you know what the pci id's are for the device ? The Promise website claims RHEL 5.2 support was added Sept '08. I figure the card might very well be detected, but how about the management gui - it appears to use some sort of web interface, but the card has no ethernet jack, so it must rely on some special driver to access this? most of the time such webui's are run via a proxy app, that you run as 'root' on the machine and then connect to over the net using your web browser. its a common practice that many h/w vendors use these days. ... and we have many problems with that approach which most of the time uses Java. I have many servers in production (mostly Winblows boxes, i know it's bad but it's not my choice!) that have 2-3 of these bad admin apps and we have many compatibility problems. For example, i have one server with APC UPS management, AVG Anti-Virus management server and Promise Management. For Promise, i've never been able to make work the management interface for the PCI card at the same time of the external VTRak Raid chassis. To explain a little better, i have a Promise RAID Card (it's fake raid!) and an external VTRAK 15100 15 SATA disks to SCSI RAID Chassis. The worst thing is that the VTRak has an ethernet port but still requires the crap JAVA application running on the server (for management, SNMP, etc)... AVG Anti-Virus Server had Java problems after installing Promise crap and so on... At least, i found APCUPSD for Win32 and finally, APC UPS monitoring is stable. For the rest, i can only cross my fingers... And Promise don't seems to support their hardware very well: Very few updates since many years. I dunno if somebody on this list has advises for these Java Apps problems. Maybe it's just bad coding from these companies. I had some problems on Linux too but at least, it seems that Sun has open up a bit support/licensing on Linux. Regards, Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RAID on Email Server
Matt wrote: Right now its running pretty good but here it is. 10:10:04 AM CPU %user %nice %system %iowait %idle 10:20:01 AM all 13.87 0.00 2.45 59.20 24.49 10:30:03 AM all 22.26 0.00 3.68 53.51 20.54 10:40:01 AM all 20.58 0.00 3.78 55.40 20.24 [ Stuff Deleted ... ] 01:00:01 PM all 11.53 0.00 2.38 20.96 65.12 Average: all 17.49 0.00 4.03 46.29 32.19 A while after the reboot it straightened its self out. Yesterday w was indicatining load average of like 120 or more at times. Today after reboot all is good. Matt Hi Matt, Your %iowait seems high. I had %iowait comparable to you with a single 200 Gigs 7200 RPM IDE drive. Now we've upgraded this server: Opteron 2216 with 4 Gigs RAM, CentOS 64 v5.2) and an Adaptec 3405 plus 4 x 73 Gigs Seagate 15K RPM (RAID 10). No more %iowait! I benched it at about 140 MB/s and random r/w are very good on these drives. We have 55 employees running Outlook connecting to Communicate with MAPI. The dataset is about 100 Gigs. Communigate use MBOX files for storage. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Samba 3.0.28/3.0.32
Joseph L. Casale wrote: XP Home was purposefully crippled by MS so it lacks networking features in XP Pro and Win2k Pro. Yawn... Are you informed well enough to know how it was crippled as you say? I think not, it may not be a member of a Windows domain. That's it. It costs less. That's fair? I wonder if you apply your analogy to RH? They have Red Hat Enterprise Linux Advanced Platform versus Red Hat Enterprise Linux? Big price diff there? Is that RH crippling their Linux? XP Home don't have: - The RDP server - Offline Folders - Dual CPU Support - Greater Access Control (shares, files folders) - Multi-Language interface Another annoyance is the lack of address bar in the Winblows Explorer. It's very handy to be able to type UNC name in address bar. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Samba 3.0.28/3.0.32
Alexander Georgiev wrote: 2008/10/9 Guy Boisvert [EMAIL PROTECTED]: Joseph L. Casale wrote: XP Home don't have: - The RDP server - Offline Folders - Dual CPU Support - Greater Access Control (shares, files folders) - Multi-Language interface Another annoyance is the lack of address bar in the Winblows Explorer. It's very handy to be able to type UNC name in address bar. It does have address bar. At least my copy of Windows XP Home has it. Regarding Dual CPU Support - Windows Task Manager shows 2 separate CPU Usage Histories for the CPU, which is Core3 CPU T7200. It has hyperthreading or something. Best regards. Alex The list is from M$ specs. It says Dual CPU (meaning dual socket), not Dual core which is a single socket CPU! As for the address bar, it may have changed with service packs and updates, i dunno. The one i have here won't do that! Regards, Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Home NAS device
Rob Townley wrote: On Fri, Sep 5, 2008 at 12:35 PM, Les Mikesell [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Joseph L. Casale wrote: The Dlink DNS-323 looks exactly what you are asking of What a procedure to hack that thing! The problem I see with going the all-in-one NAS route is that down the road, there's always some function you'd like to add - but you can't. You've hit the limitations of the box. That's why I want to put straight Linux on it:) As fun as hacking that thing would be, I might just buy one of the tiny boards, but for the price if I brick the DNS-323 it would still be fun and I wouldn't really care! http://www.readynas.com/wp-content/uploads/2008/06/readynas_specs.swf I had the ReadyNAS NV+ and finally sold it because i found it too slow and too choppy. To reach its full potential, which on paper is supposed to be able to transfer around 30 MBps (i never go that), you have to use jumbo frames and gigabit ethernet. The problem is that the CPU is very slow. The ReadyNAS was supposed to offer shell access but it never happened during the time i had it. The ReadyNAS was one of the fastest on the market if not the fastest. Then Infrant was bought by Netgear. Sure it had many cool features like their X-Raid technology. The casing was slick and solid. I used it for storing my music (i do disk jockey) and the ReadyNAS was choppy. It seems to be weak at multitasking requests (playing a song while searching for another). Playing Music was glitching while i was doing a filesystem search, not cool for a DJ! I replaced the thing by an Asus micro-ATX mainboard and an Athlon Dual Core 4600+ i had here (there's so cheap now!). I took the 4 hard drives i had on the ReadyNAS (Western-Digital 500 Gigs RAID Edition) and i do software Raid 5 with CentOS 5: the result is very good (transfer around 35-40 MB/s and the cpu usage is low). I experienced the Samba problem that made disconfort to Winblows XP but it's fixed now with the update of Samba. If you're not into performance, one of these boxes could do it but don't expect something zippy. Don't expect high transfer rate. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Hard disk, format, filesystem SOLVED
Jussi Hirvi wrote:
Les Mikesell [EMAIL PROTECTED] escribio (15.8.2008 20:01)
I would have just used fdisk instead of partd. If you are adding this
to a raid, you don't need a filesystem, just a partition of the right
size. The contents are going to be wiped by the raid sync anyway.
Thanks for comment. Fdisk was recommended me by another experienced user
too, so there is probably a good reason. Though I don't know, what's wrong
with using parted.
BTW, this problem partition was not the raid1 partition, but a copy of the
boot partition on the startup disk. In case the boot disk ever fails, I hope
I can make the 2nd disk bootable by just installing grub.
- Jussi
I had this same boot problem you had and i found the following script
made by Alex Tkachenko (Thanks Alex!):
== CUT HERE
#!/bin/sh
#
# Update MBR on both mirror drives
# (grub/swraid has problems updating the slave, # as of RHEL3)
# Should be run after grub rpm updates as well
#
# By Alex Tkachenko alex at ingrian.com
ADMINDIR=/root/admin
if [ ! -d $ADMINDIR ]
then
echo $ADMINDIR does not exists.
echo Creating $ADMINDIR for storing boot sector backups...
mkdir -p $ADMINDIR
else
echo $ADMINDIR exists.
fi
BOOT_ARRAY=`df /boot | awk '/dev/{print $1}'`
# Select only active disks (skip spares)
DISKS=`mdadm --query --detail /dev/md0 | awk '/active sync/{print $7}'|
sed '
s@/dev/@@g
s/,/ /g
s/[0-9]//g
'`
for d in $DISKS
do
cat EOF | /sbin/grub --batch --no-floppy
device (hd0) /dev/$d
root (hd0,0)
setup (hd0)
quit
EOF
# Save updated mbr
dd if=/dev/$d of=$ADMINDIR/mbr.$d count=1
done
== CUT HERE
Guy Boisvert, ing.
IngTegration inc.
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Re: [CentOS] Windows XP fixmbr from Centos?
Robert Moskowitz wrote: Kai Schaetzl wrote: Robert Moskowitz wrote on Wed, 30 Jul 2008 08:29:01 +0100: I am still dead on my corporate system, and the XP boot CD I brought won't boot. And so far I have not found anyone here at the IETF meeting that happens to have one in their bag of tricks... If this is an XP system and the MBR set by XP, then you can boot with the (any!) XP CD/DVD into the rescue console and use fixmbr command. I know that, but so far I have not found anyone here at the IETF meeting that has one. I mean, who carries such a CD with them to a week-long meeting? I have a couple of options to pursue still. LIke the network helpdesk vendor who is local... However, you indicated earlier there is some encryption in place, I don't know if that is already in effect at MBR level. If it is, this method or the one mentioned in the article won't help. My corporate tech guy told me the first step is to get a standard XP mbr back on the system, and then he believes he can talk me through getting the encryption working again. Kai Freedos with command fdisk /mbr ? There are a couple of hurdles with this, mainly: 1) If you have SATA drive (or SCSI or...), freedos may not be able to see the drive 2) I don't know if freedos has an updated version of fdisk that has no addressing limitation (main not be a showstopper anyway) Anyway, just a quick tought. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Missing dependencies
Hi! I have a new shiny CentOS 5.2 server freshly installed. I wanted to install VMWare Server but the installer wants to compile a module. I thought, no problem: Let's install compiler and libraries. So i did: yum groupinstall Development Libraries Development Tools But i end up with: == -- Processing Dependency: libsqlite3.so.0 for package: rpm-devel -- Finished Dependency Resolution Error: Missing Dependency: libidn = 0.4.6-1.2.el5.rf is needed by package libidn-devel Error: Missing Dependency: libsqlite3.so.0 is needed by package rpm-devel Error: Missing Dependency: libidn.so.11 is needed by package curl Error: Missing Dependency: libsqlite.so.0()(64bit) is needed by package sqlite-devel Error: Missing Dependency: sqlite = 2.8.17-1.el5.rf is needed by package sqlite-devel Error: Missing Dependency: libsqlite3.so.0 is needed by package rpm-libs What's really missing and why it doesn't seem to be in the repo? Thanks! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Missing dependencies : SOLVED
Johnny Hughes wrote: Guy Boisvert wrote: Hi! I have a new shiny CentOS 5.2 server freshly installed. I wanted to install VMWare Server but the installer wants to compile a module. I thought, no problem: Let's install compiler and libraries. So i did: yum groupinstall Development Libraries Development Tools But i end up with: == -- Processing Dependency: libsqlite3.so.0 for package: rpm-devel -- Finished Dependency Resolution Error: Missing Dependency: libidn = 0.4.6-1.2.el5.rf is needed by package libidn-devel Error: Missing Dependency: libsqlite3.so.0 is needed by package rpm-devel Error: Missing Dependency: libidn.so.11 is needed by package curl Error: Missing Dependency: libsqlite.so.0()(64bit) is needed by package sqlite-devel Error: Missing Dependency: sqlite = 2.8.17-1.el5.rf is needed by package sqlite-devel Error: Missing Dependency: libsqlite3.so.0 is needed by package rpm-libs you have got some system files replaced by .rf (rpmforge) files ... looks like you added a 3rd party repo without setting up yum-priorities and some important files (sqlite*) were replaced Thanks Johnny. Indeed i have RPMForge (which i never used yet, well some files were pumped from there because of my mistake described below!). Soon after install, i did: yum install yum-priorities == I don't know where i read that but i thought that the default priority level was 10 (maybe i was drunk!!!). So rpmforge repo was set to 11 !!! The default is 99, not 10! == So finally, i just edited /etc/yum.repos.d/CentOS-Base.repo and added line: priority=1 to sections: [base] [updates] After, i did: yum groupinstall Development Libraries Development Tools to find out that i had to remove packages: yum remove subversion-1.5.0-0.1.el5.rf xulrunner-1.9.0.1-1.el5_2 Which were newer than in CentOS repos. After removing Subversion Xulrunner, Developpement Tools Development Libraries installed just fine. Thanks again for your help! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Native Command Queueing
Scott Silva wrote: on 7-24-2008 6:51 AM Matt spake the following: Is there anyway to enable NCQ on CentOS 4.6? I guess anouther question is on a somewhat high activity mail server with a single SATA2 drive will it do any good? Matt I doubt it will make a BIG difference, but you might be looking for trouble running a highly active server of any kind on a single spindle. I have a Communigate mail server that was running on a single WD 200 Gigs IDE (7200 RPM). Communigate uses separate mbox files for storage, very easy for backup / restore. I was monitoring it with SAR and there was very high level of IOWait, meaning the drive was having a hard time. Context: 35 Users Running Outlook with Communigate MAPI Plugin 80 Gigs dataset (Total) Public folder with about 50 Gigs of stuff We replaced the server with a Tyan Transport TA-26. We put an Adaptec 3405 (4 ports Unified SATA/SAS adapter) and 4 Seagate 15K SAS 73 Gigs drives (RAID 10). No more iowaits even if now there is 50 users. I don't know about your context but running on a single drive is dangerous for data loss anyway. Hope this helped! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ideas for stopping ssh brute force attacks
Michael Gabriel wrote: just wanted to get some feedback from the community. Over the last few days I have noticed my web server and email box have attempted to ssh'd to using weird names like admin,appuser,nobody,etc None of these are valid users. I know that I can block sshd all together with iptables but that will not work for us. I did a little research on google and found programs like sshguard and sshdfilter. Just wanted to know if anyone had any experience with anything like these programs or have any other advice. I really appreciate it. I don't know if anybody on this list tried SPA (Single Packet Authorization): http://www.linuxjournal.com/article/9565 As another person mentioned earlier, the idea of using VPN is very good. I use pfSense and the VPN server inside gives the connecting user an address on a virtual subnet. Each user is given a distinct fixed ip address. Then it's easy to setup firewall rules based on what you allow the user to do. I do 10 Mbps symmetric with a recycled 1U Dell PowerEdge 350 (PIII/800, 512 Megs RAM). We do QoS (we have 1 WME Streaming Server, 1 Darwin Streaming On Demand Server, FTP, DNS, SMTP, etc). The CPU usage is very low. I love pfSense a lot. The only thing i struggled a little was when i tried to authenticate the user with Active Directory (M$ IAS = RADIUS). It works but i have yet to find a way to assign a fixed address to each user. I can do this if i use pfSense integrated user manager (for VPN). In another place, i use a CentOS box as a remote gateway using SSH. I changed the SSH Port, use DenyHost, force SSH V2 and forbid password login (SSH Key login mandatory). I even got a VBS script for our Winblows users that uses plink (member of the PuTTY Family) to connect, authenticate with keys and launch RDP Terminal to connect to the Winblows Terminal Server (all this automated). The only prompt the user has is for entering his remote login name (the user must know it or the connection will be refused). I did an installer (with Nullsoft's NSIS) so allowed Winblows users can install easily all this: The installer creates icons, protect SSH keys (NTFS Encryption), etc... The installer is protected by a password. Hope this helped! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT - Windows slowdown?
Martyn Hare wrote: This is so barely on topic it's just plain _wrong_, but it's the only thing I can give useful input on based on [bad] experience. That said it's not _that_ offtopic given Xen can run Windows and CentOS includes Xen technology ;-) Then this list could become the list of about anything, providing that Xen can run many other OS! I'd say that for Winblows / Xen problems, you could just submit to Xen list then. A discussion about slowliness or not of Winblows SP3 is *SURELY* off topic in the CentOS list! I still don't know how the original poster came with all this in the CentOS list. I mean, for Winblows stuff, i'd post to a Winblows list first! So thanks for your help but next time, please DNFTT! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT - Windows slowdown?
Rudi Ahlers wrote: Rainer Duffner wrote: Guy Boisvert wrote: A discussion about slowliness or not of Winblows SP3 is *SURELY* off topic in the CentOS list! I still don't know how the original poster came with all this in the CentOS list. I mean, for Winblows stuff, i'd post to a Winblows list first! Because the idiot-density is usually lower on a non-Windoze-list. This happens everywhere. On good lists, people come-up with all sorts of questions for all sorts of problems after they realize that a bunch of people who actually know their stuff hang around. This list is not too busy - it's still a bearable volume. But I admit I don't read everything. Rainer ___ I actually got kicked off a local Linux list for asking something similar, had some issues with a MS Exchange server (which is more an STMP / IP transport problem than MS specific) and some ppl on the list decided I should be kicked off for it. On the other side of the coin, MS wanted to charge me close to $100 /hour for support. Go figure. I can imagine that the knowledge level can effectively be lower in Winblows lists. It's as simple as to who is headed Winblow$ in general. (There are idiots everywhere and even if sometimes they know a lot about something but that's another subject!) Macroshaft focus on sucking money out of the mass and Linux is aiming to something else. This list is about CentOS, we focus on that, it's clear. Sure there are probably a lot of people with high knowledge in Winblows here but let's just say again that there are probably many other lists for Redmond's Let's Go Captive and Mess Around Standards OS. If i have knowledge in Winblows and want to help, i can just subscribe to those lists and Voilà ! As for M$ wanting to charge for support, people have to realize that sometimes you have to take many parameters into account before choosing a server platform. I'm a consultant and when i speak about TCO and ROI to my clients, i often have to fight the misconception that it's always easy with Winblows... Redmond funded some research companies to say that Linux TCO was higher than Winblows', let's just say that money can buy many things... Majority of little companies choose Winblows by default thinking that you just put a server into a closet and forget about it. They think that the receptionist can just click update from time to time and everything will be ok! And VARs companies very often pre-install Redmond's crap on their hardware (again, buy out by Redmond)... Then one could probably say that if you get support for Linux, it could be as expansive as Winblows (hourly based) and that's true. But i always return to the root of the difference and illustrate the techniques used by Redmond to modify standards, to get clients captive, etc. I still have to live with the M$ Office mess everyday, good illustration of Redmond's low blow tactics (specifically in this case, the horror story about their closed source data file format that they use to push you to the latest version). Or even, think about their prohibitive license fees (Win2003 CALs are now in excess of 100$ per seat)! Ok, enough for evidences about Redmond... Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT - Windows slowdown?
Dennis McLeod wrote: I've installed it on a half dozen machines here as part of a test. No issues that I can see. All are XP Pro with SP2 and some IE6, some IE7. All upgraded to IE7 after, if they were IE6. I DID take images (Clonezilla!) of those machines before I installed Just a habit I got into years ago. (Taking images before major changes, not Clonezilla. I used to use Imagecast...) Dennis -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert - elists Sent: Wednesday, July 16, 2008 7:59 AM To: 'CentOS mailing list' Subject: RE: [CentOS] OT - Windows slowdown? Applying SP3 to my daughter's laptop has killed performance to the point of being almost unusable. Restore Points seem to be lost, so I can't go back to before it. Anne Anne Sp3 doesn't kill performance if applied to a fresh install before any other updates or apps are applied / installed Installing sp3 on top of sp2 just because is realistically not a good thing... - rh Hey guys, could you please move this thread where it should be: In a Winblows mailing list... I don't think that the CentOS mailing list is the right place to discuss about Winblows... On top of that, top posting is irritating at best. http://www.centos.org/modules/tinycontent/index.php?id=16 (item 2, Guidelines for CentOS Mailing List posts) Thanks for your understanding and have a great day. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] how do I find out which nameserver returns a DNS query?
Ken Price wrote: DIG tells you which server returned the results. Look for the SERVER line, should be third from the bottom. If you want to query specific nameservers directly, use dig like this: dig @ns1.myserver domainname.com dig @ns2.myserver domainname.com etc, etc. -Ken Hi Ken, Please do not top post! It makes life harder in mailing lists. http://www.centos.org/modules/tinycontent/index.php?id=16 (item 2, Guidelines for CentOS Mailing List posts) I didn't include the last replies but it's all messed up. Thanks ! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] how do I find out which nameserver returns a DNS query?
Ken Price wrote: Please do not top post! It makes life harder in mailing lists. http://www.centos.org/modules/tinycontent/index.php?id=16 (item 2, Guidelines for CentOS Mailing List posts) I didn't include the last replies but it's all messed up. Dude. Give me a break. I was just quick-replying and not thinking. Reply privately next time. -Ken Hi Ken, I didn't want to be rude or anything. It's just that those top posting are coming again and again. It makes threads harder to read and the posting guidelines to the CentOS list are public and well defined. I thank you for your help. But people have to realize that these guidelines are not just for fun or temporary. The more people know about it, the better it is for the sake of the list. That's why i'll CC to the list, it's good for people that don't know about the guidelines. Maybe you were not aware of them, now you are and thanks for that. Regards, Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] settings up cheap a NAS / SAN server, is it possible?
Les Mikesell wrote: Are you pricing the low end NAS boxes (like Buffalo Linkstation/Terastation, etc.)? It might be hard to beat that if all you want is a file server. Most run Linux of some sort on ARM or PPC processors and may need to be hacked to add NFS or support 2gig files. I had an Infrant ReadyNAS NV+ last year (Now Netgear) which was supposed to be one of the fastest on the market (Cost about 800$ without drives). A cheaper home made NAS beated it hands down (Software RAID 5). See last paragraph of: http://lists.centos.org/pipermail/centos/2008-April/097623.html The ReadyNAS was a cool little NAS with many services but i found it slow and choppy. It was a nice little case and the homebrew NAS was bigger indeed. But the homebrew has power to spare and can do much more. The ReadyNAS was supposed to get shell access but never made it before i sold it (WEB Manager only when i had it). Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] remote access info please
Monty Shinn wrote: Gary wrote: Hi ya'll, I built a new CentOS 5.1 server for a client, housing a Lotus Notes / Domino server, and various other virtualized IBM software server guests, and soon will have to physically move that server to another distant location. My question is that I will need secure access to those servers via X, not just the C/L terminal. What do you recommend for a good secure CentOS program which would do this. Would also want to access via a high port, but I am sure just about any program will allow this to be manually configured. Thanks for your help and input. Gary, You can run X apps over ssh if you use the -Y option. You can also configure ssh to use a non-standard port in it's config page. I also believe you can port (tunnel?) VNC through ssh, but I have only heard about that, so I may be off here. VNC is part of the standard CentOS distribution. HTH, Monty Personaly, i use TightVNC and portable PuTTY (USB Key) for Winblows. It works ok. And the port forwarding thing is easy. I'm not sure if the CentOS' vncserver support compression though (performance is OK for what i do). On the server, edit the file ~/.vnc/xstartup and uncomment the lines (as indicated in the first line comment): # Uncomment the following two lines for normal desktop: unset SESSION_MANAGER === This exec /etc/X11/xinit/xinitrc === and This Then start the VNC server on the server (first time, it will ask for a password which you will use when connecting with TightVNC viewer), for example: vncserver :20 -depth 16 -geometry 1152x864 -name ServerName:MyUserName where :20 = the # of the terminal (i arbitrarly choose 20, you can start multiple on the same machine and choose whatever you want) -depth 16: Color bit depth -geometry 1152x864 = Whatever you see fit -name = A string that will appear in the window title of the VNC client. Then, while connected with PuTTY, connect TightVNC viewer to: localhost:20 (without quotes). To kill the VNC server: vncserver -kill :20 Some more infos there: http://lists.centos.org/pipermail/centos/2006-November/072254.html Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] tzdata, Greenwich zone: URGENT!
Johnny Hughes wrote: I use UTC make sure that the file /etc/sysconfig/clock says this: #---start cut ZONE=UTC UTC=true ARC=false #---end cut Copy the file /usr/share/zoneinfo/UTC to /etc/localtime set the time via an ntp server with the command (if ntp is installed): ntpdate -s 0.centos.pool.ntp.org Then you should always be at the correct time. NOTE: If you do not have the correct time zone in the /etc/sysconfig/clock file then on the next update, you will get the reset to the timezone that is there and not the one you manually copied in. The UTC time zone is also available on install as a selection. Thanks, Johnny Hughes Thanks Johnny! Great info. I edited the /etc/sysconfig/clock file and did what you said. I did also: cp -p /usr/share/zoneinfo/UTC /etc/localtime. I'll probably schedule a reboot, just to be sure all is clean. NTPd is already running. Checking /usr/share/zoneinfo/, i saw GMT, GMT0, GMT-0, GMT+0, UTC Greenwich. Does anybody knows the differences between all these or could provide a link to a reference? I found some infos but nothing that explains the subtlety. I made a diff and they are binary different. I just want to understand better what happened to us and the time thing! Regards, Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] tzdata, Greenwich zone: URGENT!
Hi! It appears that there have been some changes to tzdata recently. We run an application that needs the server to stay at GMT. Previously, we used the Casablanca timezone but now there seems to be a 1 hour difference to GMT. I checked the London zone and they seem to change time too. I tried to change the zone to GMT with system-config-date (i'm using command line remotely) but didn't find the Greenwich zone! Is there any way to fixed this ? [EMAIL PROTECTED] ~]$ date Tue Jun 3 14:10:21 WEST 2008 [EMAIL PROTECTED] ~]$ date -u Tue Jun 3 13:10:24 UTC 2008 Thanks in advance. Guy Boisvert, ing. IngTegration inc. P.S.: As i'm writing this, our application just started to desync !!! HOW CAN I ROLL BACK TZDATA I Googled all over without finding any way to do it! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RAID5 or RAID50 for database?
Linux wrote: On Fri, May 23, 2008 at 8:28 AM, Guy Boisvert [EMAIL PROTECTED] wrote: More intelligently designed - Could you please tell us more on this one? Simple answer: Open Source (and for a long time) I guess you know what it means. But I wander if source of Adaptec raid controller's firmware is opened in recent years. Well, i respect Open Source (and your opinion) very much but your comparison imply that you had access to Adaptec's code! Maybe you really had access, i don't know. If it's the case, then thanks you for having shared this knowledge. Not easily recoverable? I did recovery many time without a hitch (Adaptec, 3Ware, LSI, PERC)! Try recovering 3Ware failed disks with Adaptec then. Nearly every vendor has his own way in details. Yes, mostly documented but not interchangable. And I do not mean only RAID-1. You're talking about failed disks or controller? With controller, easy with my backups (or backup card). People with no tolerance to failing controller arrange things accordingly like i do. With disks, irrelevant. As for RAID 10 with 3 disks, mmm... go see: http://en.wikipedia.org/wiki/Redundant_array_of_independent_disks mdadm Raid-10 is neither 1+0 nor 0+1. So 3 disks is enough to supply a minimum level of redundancy. You should have 2 copies of each stripes on either 2 of 3 disks. But in 3 disk configuration loss of 2 disk means total loss. Go check with man mdadm. Well, educate me (and maybe others) M8. I learn things everyday and i like it. How would you do RAID10 with 3 disks? I know how to do it with at least 4, then 6 and so on. As for RAID-10, more below. Well, my parents taught me understanding what I read better than you (although I'm not a native English speaker) Well, english is neither my native language! As for reading, i'm not that bad but i may have misunderstood what you really meant. In that case, please forgive me! I didn't meant to be rude or anything. Hey, have a nice day Linuxito ! Thanks buddy. And for referance, try reading this [1] I do not want to start a flame, just sharing my experience with different hardwares. This comparison about software-hardware raid excludes SAN and other external RAID solutions. Externally attached storage is outside the scope of this discussion. Externally connected solutions can obviously be SAN, software RAID, hardware RAID, or a combination thereof. [1] [1] http://linux.yyz.us/why-software-raid.html I agree that the compatibility is great with software RAID. However, there are some limitations at least in performance (Bus saturation, etc). I tried to read your reference (the URL you kindly provided me, thanks) and, quote: When the top array is a RAID 0 (such as in RAID 10 and RAID 50) most vendors omit the +, though RAID 5+0 is clearer. RAID 1+0: mirrored sets in a striped set (minimum four disks; even number of disks) provides fault tolerance and improved performance but increases complexity. The key difference from RAID 0+1 is that RAID 1+0 creates a striped set from a series of mirrored drives. In a failed disk situation RAID 1+0 performs better because all the remaining disks continue to be used. The array can sustain multiple drive losses so long as no mirror loses both its drives. So they say, and correct me if i'm wrong, that RAID10 is a RAID 1 of RAID 0. A mirror of stripe sets. You said it's not that, i lost you on this one. |-- Mirror | | | -- D1a-- D1b | | | Striped | Striped | | -- D2a-- D2b | | ... ... | | -- Dna-- Dnb So that's why i don't get what you mean by RAID10 with 3 disks. Please explain. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] samba question
david chong wrote: Hi, I am running Centos5.1, trying to configure samba now. I am quite new in this area and hope help from the list. I could not connect to it from a windows xp pc From the console, I log in and do a smbclient -L localhost -U% Domain=[MYGROUP] OS=[Unix] Server=[Samba 3.0.25b-0.el5.4] Sharename Type Comment - --- samba Disk IPC$IPC IPC Service (Samba 3.0.25b-0.el5.4) Domain=[MYGROUP] OS=[Unix] Server=[Samba 3.0.25b-0.el5.4] Server Comment ---- ANTIOCH Samba 3.0.25b-0.el5.4 WorkgroupMaster ---- MYGROUP ANTIOCH Could you pls help. Thanks David Hi David, I recommend you this: http://www.samba.org/samba/docs/man/Samba-Guide/ This is IMHO an excellent guide made by the good folks at samba.org. Very basically, you need to edit /etc/samba/smb.conf and define your shares there. The default file is abundantly commented. You can have your server validate the accesses using locally stored samba/users accounts or even validate with a SMB/CIFS PDC (Winblows or Samba). Hope this helped a bit! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RAID5 or RAID50 for database?
Jason Clark wrote: You're going to need two RAID controllers and 6 drives to do RAID 50. RAID 50 will be faster, but costs more in drives and controllers. Jason www.cyborgworkshop.org mcclnx mcc wrote: we have DELL 6800 server with 12 internal disks in it. O.S. is CENTOS 4.6 and SCSI control card is PERC 4e/di. We plan to configure 4 disks (5,8,9,10) as RAID5 or RAID50. This logical volume will be use as file systems and store database backup files. Can anyone tell me which one is better on performance? 1st, Jason, please do not top post! It makes life harder in mailing lists. http://www.centos.org/modules/tinycontent/index.php?id=16 (item 2, Guidelines for CentOS Mailing List posts) You do not need two (2) raid controllers unless you want to have redundancy at the controller level. Adaptec, 3Ware, etc do RAID 50. For RAID 50, you need at least 6 disks. http://en.wikipedia.org/wiki/RAID For database, i'd go with RAID 10. As pointed out Joseph in a previous post, RAID 5 rebuilding would slows the array down. As for RAID 10, i didn't make extensive benchmarks but here are the rough results i got with Adaptec 3405 and four (4) Seagate 15K SAS drives: RAID 5: Read = 170 MiB/s Write = 135 MiB/s RAID 10: Read = 170 MiB/s Write = 160 MiB/s And the difference gap (write) should increase in favor of RAID 10 as one add disks (provided that the controller use more PCI-e lane than the Adaptec 3405 which use 4 lanes or even using the PCI-X bus). RAID 5 uses XOR calculation. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RAID5 or RAID50 for database?
Linux wrote: And stick with md-raid 10 (also known as software raid) because it is much more intelligently designed than any closed-source-embedded-raid-controller. More intelligently designed - Could you please tell us more on this one? i Nowadays hardware raid frightens me because of the need to have spare raid-controllers for every hardware-raid-configuration I have. They are neither interchangable nor easily recoverable. md-raid 10 can be established with any number of disks (at least 3 but better check with google) Not easily recoverable? I did recovery many time without a hitch (Adaptec, 3Ware, LSI, PERC)! As for RAID 10 with 3 disks, mmm... go see: http://en.wikipedia.org/wiki/Redundant_array_of_independent_disks Lastly, it's kinda strange that your name is Linux: Maybe you're young and your parents decided to honor this great OS! Well, i may name my next children Cento !!! ;-) Hey, have a nice day Linuxito ! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] clustered mail server?
Ruslan Sivak wrote: David G. Mackay wrote: I'm not sure why nobody has asked this yet, but why not try hosted GMail instead? It's free and you can use it with your domain name. We currently run a linux based mail server, but are thinking of migrating over to hosted GMail, and have one so for a few clients already with no problems. Russ Well, i just hope you don't have anything secret or sensitive... With their search power, it's very easy to automate the info harvesting! I'm not saying they do it, but they surely have the technology. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: clustered mail server?
Tom Diehl wrote: On Sun, 18 May 2008, Guy Boisvert wrote: Well, i just hope you don't have anything secret or sensitive... With their search power, it's very easy to automate the info harvesting! If you are sending secret or sensitive information via unencrypted email you already have a bigger problem then weather or not google is harvesting info. Email by design is insecure. Why anyone would believe otherwise is unclear to me. If you are encrypting it than I would argue that it does not matter if google tries to harvest information from it. Regards, Tom Diehl[EMAIL PROTECTED]Spamtrap address Good point. Does Google supports encryption? On top of that, Echelon is listening... As for unencrypted emails, it's child play. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: tar spanning
Scott Silva wrote: on 5-15-2008 10:06 AM MHR spake the following: On Thu, May 15, 2008 at 6:56 AM, John R Pierce pierce-BRp9yk6zKL1Wk0Htik3J/[EMAIL PROTECTED] wrote: outlook supports imap, doesn't it? I have my wife setup with Microsoft Windows Mail (Vista, fka outlook express) using imap on gmail, and it works /great/ she gets the best of both worlds, it maintains copies of her folders locally AND on the gmail server, and synchronizes each time she connects so that she can look up stuff in her email when she's offline. the imap 'folders' she creates in windows mail are in fact filters on gmail. OMG! Did I read this right? John, YOUR wife uses (random unflattering gagging noises inserted here) WINDOW$??? I'm shocked! Shocked, I tell you! I may not get anything else done today! /humor ! What, I left out the start tag? It's implicit here, isn't it??? ;^ mhr Is it still funny if you have unmatched tags? It seems that after all those years of Outlook problems, some are just into extreme sports and up to the challenge of keeping their machine stable with this emphasis CRAP /emphasis !!! Not to mention that crapware coming from Redmond breaks standards and gives headaches to many support people like me... But hey, we're (support people) supposed to get profit from that, that's Redmond's business model... It's just that i fell bad when i abuse people, Redmond has no problem with that whatsoever ! Anyway, NOMB but i'm shocked too! I wish great luck to your wife, she's very courageous ! Living in those both worlds is just to dangerous for me! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best Motherboard
John R Pierce wrote: Simon Jolle sjolle wrote: On 05/15/2008 04:24 PM, Sam Drinkard wrote: About 2 years ago, I build a server [...] What are the advantages of building your own server comparing with products from HP, Dell and IBM? Is it cheaper? I never heard of DIY server hardware market. Well, there is always the category of home servers... in my case, these are usually handmedown PCs, old, too slow to be a modern desktop, but perfectly usefull as firewalls, DNS/mail/web servers, etc. My current home server is a 10 year old P2 450Mhz rock solid board. But, I'd never use something like this in a business where its mission critical. I, for one (an opinionated one at that:D) do NOT recommend homebrewing proper rackmount servers from raw parts... storage integration issues alone can break a project like that. there's a middle ground... folks like Intel and Tyan make 'server bases', or kit servers, which comes with the rack chassis, hotswap backplanes, disk drive trays, mainboard and power supply, you just supply the CPUs, RAM, disk drives, and any extra cards you need. 6 or so years ago I built up and deployed a pair of Intel SE7501WV2 2U kits in my development lab at work, with dual xeon 2.8ghz and 3GB ram. these machines have run flawlessly running RHEL/CentOS. My department had no capital budget, and we could get these kit servers on 'expense' money, then populate them with our 'misc' budget.fully configured these were way under 1/2 what we'd have paid for a comparable HP or Dell. This would be the equivalent system with today's chipset and CPUs, http://developer.intel.com/design/servers/platforms/SR1500-2500/index.htm (the SR2500AL). The SKU SR2500ALLXR (2U, mobo, 1 of 2 PSUs, and 5 x SATA/SAS 3.5 hotswap backplane) goes for $1300-1600 street prices (wow, just about what I paid for the SE7501WV2 6 years ago! hmmm, when I bought mine, the slimline CD was standard, now its optional, oh well) these Intel server kits are even setup so you can 'brand' them for VAR applications, they have downloads that let you put your own name on the BIOS startup and so forth. In fact, the SE7501 2U servers I have were branded by Sun when they initially reentered the x86 server market, as the SunFire V65x What you get with a brand name server (HP, Dell, etc) is a warranty and onsite support.This is critical to some deployments and sites, and fairly superfluous to others. The company i work for used to buy only Dell servers which aren't bad. Support is generally good and they even have a repository for Linux. Since i'm in charge, we don't buy Dell anymore for various reason: 1) They costs more than server barebone and in our case, we don't really need to pay a premium for a service we don't need. I prefer to have a couple of spare servers that i can do tests while not in production 2) Dell, as the others VARs, uses a lot of non standard hardware parts. So if you want to replace let's say a mainboard (when out of warranty), you'll have to pay a premium to get it. 3) Right now, we have about 5 Dell PowerEdge 2550 and they are not supported anymore by Dell (i know, it's old!). They don't have the admin tools for CentOS (and Upstream) and i think it's the same for other distributions. So support is good for the first years, after a while, they seem to drop it. So now, we buy Tyan barebone. The last batch was 2U Tyan Transport TA-26 (B3992-E). This model use a Broadcom Serverworks chipset, support Registered ECC DDR2 RAM up to 64 Gigs and has 2 sockets F for Opteron CPU. CentOS works great right out of the box (we use Adaptec 3405 or 3805 SAS/SATA controllers). The mainboard is standard E-ATX and can be upgraded or put on another machine. This model has 8 SAS/SATA hot swap backplane. The only downside is that sometimes, it takes time to get them. It's like Tyan has problem producing enough for market demand. I have a couple of other servers that i built with Antec rackmount chassis and the same mainboard. My advice: Go with VARs if you have special requirements and/or want premium service. Go with server barebones if you have access to hardware competent tech people inside your company. As for Intel or AMD for CPU, i buy 90% AMD because if they don't survive, just watch the prices skyrocket as Intel would be alone. AMD is selling at competitive price so no hurt here. The new line of low power Opteron are great IMHO. As a last note, i don't have any affiliation with Tyan and i think you could get comparable hardware from SuperMicro and the likes. Choose your hardware for Linux, not the opposite! Hope this helped a bit. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: tar spanning
John R Pierce wrote: Guy Boisvert wrote: It seems that after all those years of Outlook problems, some are just into extreme sports... actually, Outlook Express, and its follow-on Windows Mail, have been FAR more standards compliant than Outlook itself ever was or will be. Outlook Express was originally MS Internet Mail and News, aka MSIMN, which in fact was still the name of the executable last I looked. I've been using Mozilla Thunderbird this past couple years, and I've got a few complaints about it, too (mainly, switching from plaintext to html formatted or visa versa is an ugly process and doesn't handle the conversion at all well at edit time) You have all my admiration to be extreme enough to deal with M$ stuff! I lost patience with them long time ago and i **HATE** the way they are always play dirty with standards. The current Outlook Express could be the best in the world, i wouldn't use it! I know, i shouldn't say that... It's just that i can't stand M$ way of doing things and i don't see them change in the next century! Well, sorry John for my rant, it came deep from my heart! And yes, Thunderbird is not perfect as 100% of the software on the planet! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Top Posting
Bob Taylor wrote: On Wed, 2008-05-14 at 16:48 -0500, Doug Tucker wrote: On Wed, 2008-05-14 at 15:56 -0500, Scott Nelson wrote: On May 14, 2008, at 3:48 PM, Doug Tucker wrote: ...all but dead...I run a usenet server here, had 3 logins last month...user base is over 4000... I *think* Scott wrote: Usenet is almost dead but e-mail lists abound (you are using one). Same concepts. I know, but my point was, since we all use email to read email lists, let's get off the old usenet etiquette, and use email etiquette, which you will find yourself in the very minute minority that replies bottom post. Doug, you *still* are missing the point! The *rules* written in the days of Usenet are *still* applicable today. Why? Because the reason for their existence hasn't changed. Originally there was Usenet *groups* now there are email lists. What's the difference? The names. Bob I second Bob on that! I do a lot of support and top posting is a *PITA*. It's like reading a book from bottom to top, right to left! It's doable but nor very confortable IMHO. I'm not saying i have absolute truth, just sharing the view of somebody that do tech support since 15 years. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best Motherboard
Stephen John Smoogen wrote: On Thu, May 15, 2008 at 5:44 PM, Guy Boisvert [EMAIL PROTECTED] wrote: The only downside is that sometimes, it takes time to get them. It's like Tyan has problem producing enough for market demand. Actually from my understanding its sort of the 'opposite'. Market demand for white-box motherboards has gotten less over time as the 'cost' of selling them has gone up versus buying a finished built system from a VAR. So companies like Tyan etc make more money making the boards indirectly for VARs than they do from selling their own boards. Its sort of like the car engine companies of the 1900's. As time went on they made smaller and smaller batches of specialized engines because the companies they had sold them to either bought them up or just had them make large batches of Ford/GM/etc engines exclusively. Yeah, that's possible. They could have big contracts with VARs. I saw some Dell workstations with special models of Asus mainboards, which are not supported by Asus! You have to rely on the VARs for support. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] question on RAID performance
John J. Lee wrote: On Thu, Apr 10, 2008 at 6:43 PM, Jerry Geis [EMAIL PROTECTED] wrote: Hi all, I was wonder what experiences there are out there with using RAID-X for performance increases. I do use RAID-1 (2 disks) but am interested in attemtps to gain higher R/W performance. Do the RAID-5's etc give noticeable performace increases? A significant help for me was using ccache for compiling programs. That was a real performance increase. Thanks for any suggestions/opinions. jerry If you want to higher R/W performance, you should go for raid0. raid0 fragments the data into the number of disks and distributes them. It gains a big performance. One drive fails, however, all data gone. raid5's benefit is not the speed but the effective space usage with the least data redundancy. Bitwise parity calculation consumes lots of processing power. So raid5 is the least choice in terms of performance. -john I had about the same interrogation a couple of months ago. I had to upgrade a mail server that was using a single IDE drive to store about 90 Gigs of mail, served by Communigate Pro on CentOS 4.6 (32 bits). The server was starting to crawl with high %iowait. The drive was simply a regular Western-Digital 7200 RPM 200 Gigs drives. Imagine the random access load, which is simply too much for a drive which is designed to handle single user load. I finally set for 4 x Seagate SAS 73 Gigs 15000 RPM on RAID 10. The performance is very good. About 150-160 MiB/s througput R/W. We use an Adaptec 3405 (Unified SAS/SATA Crontroller, CentOS stock drivers) on a new Tyan Transport TA26 (B3992-E), 4 Gig RAM, Opteron 2214 CentOS 5 x86_64. I made tests with the same server in RAID 5. Read throughput was about the same but write was slightly lower (XOR Calculation) at about 135 MiB/s which is still real good. I chose RAID 10 because i had enough space with 146 Gigs RAID 10 and i wanted absolute throughput for our 50 e-mail users which use Outlook with Communigate MAPI Plugin. Sometimes they click on a big public sub-directory and sync between Outlook and the server takes place (local caching). The user are very satisfied and CentOS 5 is rock solid, providing a very good service since 2 months. The previous server run for about 3 years without any problem, providing excellent service even if it was running on modest hardware: Athlon XP 2500, Asus A7V600, 1 Gig RAM. On another little project (friend's media file server), i assembled a cheap server with Asus M2N-e, Athlon Dual Core 4600+, 1 Gig DDR2 667 RAM , 40 Gigs IDE system drive and 4 x Western-Digital 500 Gigs RAID Editon (7200 RPM) data array. I used CentOS 5 x86_64 software RAID 5 (4 x 500 Gigs) and managed to get 35-40 MiB/s write throughput, which was much more than what he got using Intel ICH-8 RAID 5 on his Windoze PC (same drives). The Athlon DC 4600 handles the XOR very easily (low cpu usage) and the bottleneck seems to be on the bus (Regular PCI bus, 132 MiB/s max combined). He's absolutely satisfied with his new CentOS 5 Samba server. Combine that with WebMIN and a couple of scripts, he's stunned by how it's easy to use his server! I still wonder how people are paying for Winblows Home server... Hope this helped a bit! Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Enterprise-class monitoring system for CentOS and Win2k3 server
Sean Carolan wrote: You might take a look at OpenNMS and ZenOSS. I'm not sure if either could do everything you're asking for out of the box however. Thanks, ZenOSS just might fit the bill. I tried to use Zenoss for monitoring a small network (about 5 subnets) and i had really a hard time with relationships (a version of sept 2007). Zenoss seems to get its relationships when it scans the network and components by itself. I was unable to edit and set relationships manually. I was flooded by emails! I finally gave up en went for Nagios in which i have full control. I heard that the Zenoss team was supposed to work on that eventually. Regards, Guy Boisvert IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Protection for removable hard drive
Bowie Bailey wrote: Brian Mathis wrote: On Jan 24, 2008 4:54 PM, Bowie Bailey [EMAIL PROTECTED] wrote: My apologies if this is a bit off topic... I am going to start doing backups to removable hard drives and I will need to send these hard drives to an off-site storage facility. I am looking for some way to protect the drives after I pull them out of the system. I was hoping to find some kind of clamshell enclosure similar to what is used with external hard drives, but so far I haven't found anything. Do you guys know of anything like this? How do you protect your removable drives when they are not in the computer? -- Bowie When you buy drives at retail, they come packed in about 3 inches of foam on all sides around. If you have any of those boxes laying around with the foam, use that. Also make sure to put them in anti-static bags. Good idea, but I generally by OEM drives and they come packed in bubble wrap and foam peanuts. Besides, I was hoping for something a bit smaller than those boxes. Hi! You may have a look at Pelican cases. They may have a model that'll fit your needs. http://pelican.com/calculator.php I use some of these cases and i'm very satisfied. They are almost unbreakable, waterproof and they have a safety pressure valve. Regards, Guy Boisvert ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How can i share my WAN ip to my LAN?
Anne Wilson wrote: On Tuesday 22 January 2008 14:52:19 Alain Spineux wrote: Of course the main idea is to avoid to have a non firewall dedicated linux (like centos is) configured by someone without to much network knowledge be in front of Internet. I'd really recommend going for the router. They are not very expensive and easier to set up than most dsl modems. A built-in firewall comes with most, and better ones have easily configured port-forwarding if/when you come to need it. My Netgear DG634G has all that and wireless too. And the best thing is that it has a really good we-based interface (most use web-based, but not all are good in terms of well-explained and easy to configure). Anne If you want to go with this kind of router (cheap, wireless, simple), i would then recommend a Linksys WRT-54GL (The trailing L is very important, about 50$) and replace the stock firmware with DD-WRT (GPL). DD-WRT is real nice, simple and have a lot of interesting features. It is less flexible than the solutions below. You could go with OpenWRT and the same Linksys WRT-54GL if you're a Linux savvy. If you have an old PC laying around, i'd then recommend pfSense. I have pfSense firewalls on some sites and it runs very very well. If you prefer to go with SBC (Single Board Computer like a Soekris net45xx/net48xx or WRAP board), then you have a choice between mOnOwall and pfSense (and many others but those 2 are simple yet powerful). I have a couple of SBC boxes installed at my clients' offices running mOnOwall (WRAP SBC Boards) and they do a very good job. They are very energy efficient with small footprint. Finally, you could go for a used Cisco Router (something like a 2600 series) if you like Cisco like a do. But it's not an easy solution, it's very command line centric and you could have a hard time decrypting the very large command list of IOS (and getting used to it). Hope this helped. Guy Boisvert IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How can i share my WAN ip to my LAN?
Guy Boisvert wrote: Anne Wilson wrote: On Tuesday 22 January 2008 14:52:19 Alain Spineux wrote: Of course the main idea is to avoid to have a non firewall dedicated linux (like centos is) configured by someone without to much network knowledge be in front of Internet. I'd really recommend going for the router. They are not very expensive and easier to set up than most dsl modems. A built-in firewall comes with most, and better ones have easily configured port-forwarding if/when you come to need it. My Netgear DG634G has all that and wireless too. And the best thing is that it has a really good we-based interface (most use web-based, but not all are good in terms of well-explained and easy to configure). Anne If you want to go with this kind of router (cheap, wireless, simple), i would then recommend a Linksys WRT-54GL (The trailing L is very important, about 50$) and replace the stock firmware with DD-WRT (GPL). DD-WRT is real nice, simple and have a lot of interesting features. It is less flexible than the solutions below. You could go with OpenWRT and the same Linksys WRT-54GL if you're a Linux savvy. If you have an old PC laying around, i'd then recommend pfSense. I have pfSense firewalls on some sites and it runs very very well. If you prefer to go with SBC (Single Board Computer like a Soekris net45xx/net48xx or WRAP board), then you have a choice between mOnOwall and pfSense (and many others but those 2 are simple yet powerful). I have a couple of SBC boxes installed at my clients' offices running mOnOwall (WRAP SBC Boards) and they do a very good job. They are very energy efficient with small footprint. Finally, you could go for a used Cisco Router (something like a 2600 series) if you like Cisco like a do. But it's not an easy solution, it's very command line centric and you could have a hard time decrypting the very large command list of IOS (and getting used to it). Hope this helped. Guy Boisvert IngTegration inc. Replying to mmyself, i want to add that wireless could be more problematic with mOnOwall and pfSense. Those 2 are based on BSD and you'd have to check compatibility list vs. BSD version before buying. Guy Boisvert IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Help with file descriptors
Hi all! I have a problem with CentOS 4.4 and Communigate Pro 5.0.9. As our user number grows, we are seeing too many files open error messages in Communigate logs. I spoke with Communigate tech support and they asked me to increase the number of file descriptors which i did. I put 128000 as a script i made to check Communigate open files reported as high as 99000.As i checked the Communigate log file, it reported that it sees 1024 available file descriptors. Reporting that to Communigate tech support, the guy answered: CommuniGate gets this number via getdtablesize() system call. Probably in CentOS the table has a fixed size so you need to recompile the kernel to expand it. Try upgrading CentOS to 4.5 (or whatever later version is available) I'm a little afraid of upgrading the server right away, i don't want to worsen the problem. Or maybe it's safe to do it. I dunno. Is there anybody on the list that can comment on what the Communigate tech support guy said about the getdtablesize thing ? Thanks in advance! Guy Boisvert ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Help with file descriptors
Scott Silva wrote: on 11/28/2007 12:03 PM Guy Boisvert spake the following: Hi all! I have a problem with CentOS 4.4 and Communigate Pro 5.0.9. As our user number grows, we are seeing too many files open error messages in Communigate logs. I spoke with Communigate tech support and they asked me to increase the number of file descriptors which i did. I put 128000 as a script i made to check Communigate open files reported as high as 99000.As i checked the Communigate log file, it reported that it sees 1024 available file descriptors. Reporting that to Communigate tech support, the guy answered: CommuniGate gets this number via getdtablesize() system call. Probably in CentOS the table has a fixed size so you need to recompile the kernel to expand it. Try upgrading CentOS to 4.5 (or whatever later version is available) I'm a little afraid of upgrading the server right away, i don't want to worsen the problem. Or maybe it's safe to do it. I dunno. Is there anybody on the list that can comment on what the Communigate tech support guy said about the getdtablesize thing ? Thanks in advance! Guy Boisvert Was this thread hijacked, or is Thunderbird being stupid again? Sorry, i dunno what happened. I reposted it. Ideed i used Thunderbird but i was on a Winblows WS... (Not always a choice depending where you work!) Guy Boisvert ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Help with file descriptors
Garrick Staples wrote:
On Wed, Nov 28, 2007 at 03:03:30PM -0500, Guy Boisvert alleged:
Hi all!
I have a problem with CentOS 4.4 and Communigate Pro 5.0.9. As our
user number grows, we are seeing too many files open error messages in
Communigate logs.
I spoke with Communigate tech support and they asked me to increase
the number of file descriptors which i did. I put 128000 as a script i
made to check Communigate open files reported as high as 99000.As i
checked the Communigate log file, it reported that it sees 1024
available file descriptors.
Reporting that to Communigate tech support, the guy answered:
CommuniGate gets this number via getdtablesize() system call. Probably
in CentOS the table has a fixed size so you need to recompile the kernel
to expand it. Try upgrading CentOS to 4.5 (or whatever later version is
available)
I'm a little afraid of upgrading the server right away, i don't want
to worsen the problem. Or maybe it's safe to do it. I dunno.
Is there anybody on the list that can comment on what the
Communigate tech support guy said about the getdtablesize thing ?
As usual, commercial support is just making things up. This one is easy to
actually test.
#include unistd.h
#include stdio.h
int main (void) {
printf(current file limit: %d\n,getdtablesize);
exit (0);
}
Compile it, run it, viola!
=== Voila! (French is my first language! Trying to help for your
french here!)
$ gcc getdtablesize.c
$ ./a.out
current file limit: 134513392
(results will vary).
OMG! Exactly what i needed! It reminds me when i was coding C on a Sun
SparcStation 10 about 15 years ago!
I did compile the code and obtained exactly the same number.
Thanks a lot Garrick!
I just replied to the TS guy @ Communigate, i just can't stand to see
what will be his response!
Regards,
Guy Boisvert
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Re: [CentOS] Help with file descriptors
Richard Karhuse wrote: On Nov 28, 2007 3:55 PM, Guy Boisvert [EMAIL PROTECTED] wrote: Garrick Staples wrote: On Wed, Nov 28, 2007 at 03:03:30PM -0500, Guy Boisvert alleged: Hi all! I have a problem with CentOS 4.4 and Communigate Pro 5.0.9. As our user number grows, we are seeing too many files open error messages in Communigate logs. I spoke with Communigate tech support and they asked me to increase the number of file descriptors which i did. I put 128000 as a script i made to check Communigate open files reported as high as 99000.As i checked the Communigate log file, it reported that it sees 1024 available file descriptors. : When I saw this, ulimit -n immediately came to mind (and is usually 1024 -- the maximun # of files that any given process can have open). [See man ulimit.] If this runs as non-root, it won't be able to take the limit higher Hope this helps (and is not completely off-base) -rak- Hi! I think you may have missed my other posts. Here what i have: [EMAIL PROTECTED] ~]# ulimit -n 30 [EMAIL PROTECTED] ~]# cat /proc/sys/fs/file-max 30 [EMAIL PROTECTED] ~]# grep nofile /etc/security/limits.conf * - nofile 30 (I pushed it up a lot as you can see!) I have a script (using lsof) that runs every 10 minutes and i saw Communigate's file descriptors as high as 100 000. But Communigate tech support guy told me that lsof gives the total used by all threads of Communigate, which duplicate the info and add up. Communigate is using 64 threads right now. Mr. Garrick Staples kindly came with C code to check the number returned by the function getdtablesize which Communigate is supposed to use. CentOS 4.4 returns: current file limit: 134513392 ... and Communigate 5.0.9 gets only 1024 supposedly by using the same call! This explains why i get too many files open in this process, with about 40 users using MAPI Plugin under Outlook accessing a 41 Gigs public folder... The tech guy told me that Outlook can open many simultaneous IP connections to the server, each connection eating 2 files descriptors. I'll get the latest version of Communigate we can get with our licence (5.0.14) and see how it goes. I'm very impressed by the quality of the information we can get out of this list! Thanks for your input! Guy Boisvert ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Help with file descriptors
Garrick Staples wrote:
Compile it, run it, viola!
=== Voila! (French is my first language! Trying to help for your
french here!)
Um, merci bueco?
/slaughter
Merci beaucoup! (Thanks a lot!)
/you_re_good!
Actually, i found that the code should read:
#include unistd.h
#include stdio.h
int main (void) {
printf(current file limit: %d\n,getdtablesize()); === Added ()
exit (0);
}
I got 300 000, it's what i have in /etc/sysctl.conf.
Guy Boisvert
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[CentOS] Traffic control
Hi all, I'm searching a CentOS based solution to have a control over the number of connections to various services depending on overall used bandwidth. To give you a more accurate representation of what i mean, let's say we have some live WEB video feeds (M$ WME, embedded in WEB Pages hosted on an Apache server), a Darwin streaming on demand server (Links on WEB pages, Apache), FTP server and regular WEB traffic. I'm already doing traffic shaping so the real time traffic has higher QoS (we use pfSense firewall). The problem, as you know, is that traffic shaping is not enough to ensure real time traffic will get through when bandwidth gets maxed out. The problem arise when the number of connections to streaming servers gets higher than the capacity of the link. I need to limit the number of connections to a safe maximum. The link is a symmetric 10 Mbps and we are not in a position to raise that for now. I'd see something like a traffic director that sense the used bandwidth and controls the amount of connections to servers. Is there something that looks like that in CentOS? And how to inform the clients to connect later if their connection is temporarily refused (a timeout is not very elegant!)? I heard that their are some commercial products that does about that but i'm searching for an open source solution if it exists. Thanks! Guy Boisvert IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Performance of CentOS as a NAT gateway
Bart Schaefer wrote: On 9/9/07, David Hrbác( [EMAIL PROTECTED] wrote: how many connections are on the router (/proc/net/ip_conntrack) ? This is way off-peak time for us (middle of Sunday night PDT) so I suspect looking at this right now is not very useful, but: # cat /proc/net/ip_conntrack | wc -l 15140 # cat /proc/net/ip_conntrack | fgrep -v UNREPLIED | wc -l 586 what's the /proc/sys/net/ipv4/ip_conntrack_max # cat /proc/sys/net/ipv4/ip_conntrack_max 65536 On top of that, i'd say that a PC, with whatever processor you could put, is able to service a certain amount of interrupts / second. Sometimes, you can have also cards / integrated peripherals that are sharing IRQs and have trouble with it. So in the case of a PC router, i'd go into the BIOS setup and disable all the integrated peripheral you don't use (LPT port, integrated sound card, etc). Maybe you already did this, i don't know. There are some ways to improve performance like what Cisco does: having line cards doing processing and getting pointers from the main supervisor card and dealing with traffic locally afterward. In our PC case here, this could translate into using at least TCP offloading and flow control (ethernet level). Also, consider that not all ethernet cards are equal and that using 802.1Q (trunking) also change the game. Good cards have features to deal with all this. Somebody mentioned pfSense. I use it and there is an option that can boost the performance: Using device polling instead of relying on interrupts generated by cards. I dunno if CentOS has this kind of option, the ethernet gurus of this list could provide important information on that. Hope this helped. Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Performance of CentOS as a NAT gateway
Guy Boisvert wrote: On top of that, i'd say that a PC, with whatever processor you could put, is able to service a certain amount of interrupts / second. [Snip...] Somebody mentioned pfSense. I use it and there is an option that can boost the performance: Using device polling instead of relying on interrupts generated by cards. I dunno if CentOS has this kind of option, the ethernet gurus of this list could provide important information on that. Hope this helped. Guy Boisvert, ing. I don't like replying to myself, but this paper could give you an idea of what's going on inside Linux: http://www.ist-scampi.org/events/workshop-2004/deri.pdf Regards, Guy Boisvert, ing. IngTegration inc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
