Re: [CentOS] vncserver does not start gnome-sessioin automatically
On 2014/03/28 18:48, Yawei Guo wrote: > Hi Miranda, thank you very much. > > But it does not work. I did select KDE in optional packages when I > installed RHEL 5.8 x86_64. And I did NOT select KDE when I installed RHEL > 6.1 x86_64. Do you think this is the issue? > > > Best Regards, > Yawei > > > 2014-03-27 15:14 GMT+08:00 Miranda Hawarden-Ogata : > >> On 2014/03/26 21:07, Miranda Hawarden-Ogata wrote: >>> If you want kde, use "startkde" in the file. For gnome, use >>> "gnome-session &". >> Oops, make that "startkde &" Hi Yawei, it seems unlikely that the presence or lack thereof of kde would affect the box if you are using gnome. So what did you try, the "gnome-session &" in the xstartup file? You can also examine your log file for the vnc session. It should be named $HOME/.vnc/server:display#, so $HOME/.vnc/mytestbox:1 for example, and see if there are any error messages there. Miranda ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Recompiling the Kernel for CentOS 6.5
On 28 March 2014 21:14, Johnny Hughes wrote: > On 03/28/2014 04:06 PM, Johnny Hughes wrote: > > On 03/28/2014 01:36 PM, Akemi Yagi wrote: > >> On Fri, Mar 28, 2014 at 11:27 AM, Saket Sinha > wrote: > >> > >>> It was pointed out the CentOS-devel mailing list the below link- > >>> http://wiki.centos.org/HowTos/Custom_Kernel > >>> > >>> which allows me to create a rpm for my customized kernel and install > it. > >>> > >>> Now my question is there no method where in I can apply a kernel > >>> source tree from kernel.org(maybe 3,x version) and install it on > >>> Centos ? > >> No problem. Just use kernel-ml/lt from ELRepo: > >> > >> http://elrepo.org/tiki/kernel-ml > >> http://elrepo.org/tiki/kernel-lt > >> > >> Akemi > > I would point out that I have personally been using kernel-ml on all my > > main CentOS-6 workstations for months (maybe even years :D) without > > major problems. > > > > The only issue I have ever really had was getting the NVIDIA drivers to > > compile post 3.13.x: > > > > > http://centosnow.blogspot.com/2014/02/kernel-ml-nvidia-drivers-and-313x-kernel.html > > > > You might also need a newer acpi .. check the known issues here: > > > > http://elrepo.org/tiki/kernel-ml > > > > But, on both my ThinkPad T520 and Dell M4500N laptops, the kernel-ml > > works great for me. > > > > One last thing if using a kernel named anything other than kernel ... > > edit the file /etc/sysconfig/kernel and find: > > DEFAULTKERNEL=kernel > > and change it to: > > DEFAULTKERNEL=kernel-ml > > if you want the system to automatically enable the new kernel-ml upon > install (in /boot/grub/grub.conf) > > > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > Thanks Johnny, I have been editing /boot/grub/grub.conf for kernel-ml for as long as I can remember. -- Kind Regards Earl Ramirez ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] vncserver does not start gnome-sessioin automatically
Hi Miranda, thank you very much. But it does not work. I did select KDE in optional packages when I installed RHEL 5.8 x86_64. And I did NOT select KDE when I installed RHEL 6.1 x86_64. Do you think this is the issue? Best Regards, Yawei 2014-03-27 15:14 GMT+08:00 Miranda Hawarden-Ogata : > On 2014/03/26 21:07, Miranda Hawarden-Ogata wrote: > > > > If you want kde, use "startkde" in the file. For gnome, use > > "gnome-session &". > > Oops, make that "startkde &" > > Also, if you reference a desktop that isn't installed, vncserver will > either call the box's default or give you a desktop-less grey screen in > the vncviewer (I've forgotten which, but it's a good thing to check if > you are using a non-standard desktop and having problems). > > Miranda > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to configure
You are right. I sent this to the wrong list. (Sent from iPhone, so please accept my apologies in advance for any spelling or grammatical errors.) > On Mar 28, 2014, at 7:25 PM, John R Pierce wrote: > >> On 3/28/2014 2:42 PM, Hal Wigoda wrote: >> All that I know is that you magento-check.php script does not work. > > never heard of that script.thats not any part of CentOS that I'm > aware of. > > > > -- > john r pierce 37N 122W > somewhere on the middle of the left coast > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to configure
On 3/28/2014 2:42 PM, Hal Wigoda wrote: > All that I know is that you magento-check.php script does not work. > never heard of that script.thats not any part of CentOS that I'm aware of. -- john r pierce 37N 122W somewhere on the middle of the left coast ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Booting OpenBSD with pxelinux
I've got PXE/TFTP setup for various Linux distributions and some utilities (clonezilla, dban, etc). I'm now starting in on OpenBSD. As far as I've been able to figure out via internet searches, pxelinux (from the syslinux package) is unable to pass control of a machine directly to a BSD kernel. Instead, you have to use the BSD-supplied 'pxeboot' loader. The naming conventions enforced by pxelinux mean that pxeboot must be called pxeboot.0. Here's a simplified view of my tftpboot directory: etc/ `-- boot.conf images/openbsd/ `-- 5.4 | -- amd64 || -- bsd |`-- pxeboot.0 `-- i386 | -- bsd `-- pxeboot.0 And here's a relevent snippet of my PXE menu file: LABEL openbsd-5.4.amd64 MENU LABEL OpenBSD 5.4 amd64 KERNEL images/openbsd/5.4/amd64/pxeboot.0 So far so good. If I boot the image listed above, I get the BSD boot loader -- but, and this is the crux of my question, afaict I have to type the location of the actual kernel manually: boot> boot images/openbsd/5.4/amd64/bsd After I type that, the OpenBSD installation kernel boots without a hitch. But manually typing the kernel path is prone to error, and it's not scriptable. It appears that you can have one (and only one!) boot.conf file from which pxeboot can get some directions. Since I want to be able to serve up at least two different images (32- and 64-bits), I can't specify a kernel in boot.conf. The best I can do is print a banner, e.g., echo ** echo The OpenBSD pxeboot utility cannot be passed an alterative echo kernel path. So you'll have to issue one of the following echo commands manually from the boot> prompt: echo echo boot images/openbsd/5.4/amd64/bsd echo boot images/openbsd/5.4/i386/bsd echo ** My question: Does anyone else know a better way? Can I pass an alternative kernel path or boot.conf to pxeboot? -- Paul Heinlein heinl...@madboa.com 45°38' N, 122°6' W___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Static IPv6 configuration
System->Preferences-->Network Connections or "nm-connection-editor" from command line Only controls connections which are managed by Network Manager. see https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/3/html/Installation_and_Configuration_Guide/Disabling_Network_Manager.html On Fri, Mar 28, 2014 at 3:40 PM, Robert Moskowitz wrote: > > On 03/27/2014 10:37 PM, Eero Volotinen wrote: > > Network manager. > > I am not seeing it under System>Administration in Gnome desktop when I > vnc into the server. > > > 28.3.2014 0.38 kirjoitti "Robert Moskowitz" : > > > >> system-config-network seems to only set IPv4 addresses. There does not > >> seem to be any tool for IPv6 addresses? > >> > >> I know I can always edit /etc/sysconfig/network-scripts/ifcfg-eth0 > >> > >> but is there a 'tool' for it? > >> > >> > >> ___ > >> CentOS mailing list > >> CentOS@centos.org > >> http://lists.centos.org/mailman/listinfo/centos > >> > > ___ > > CentOS mailing list > > CentOS@centos.org > > http://lists.centos.org/mailman/listinfo/centos > > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to configure
On Fri, 28 Mar 2014 16:42:39 -0500 Hal Wigoda wrote: > All that I know is that you magento-check.php script does not work. > > All the script does when I run it in a browser window is display the > script contents. Try running this search through google (without the quotation marks): "apache script contents displayed" -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to configure
Well, I am sorry that it sounds like questions on a test. I am trying to describe completely what is wrong. I do not have the detail of what I sent in my request for help. All that I know is that you magento-check.php script does not work. All the script does when I run it in a browser window is display the script contents. If you aren't going to help me, what will I do? On Fri, Mar 28, 2014 at 4:30 PM, Frank Cox wrote: > On Fri, 28 Mar 2014 21:17:39 - > Obono I. O wrote: > >> Please I am new to Centos Linux and need direction on how to configure the >> following > > Your questions read like something for a course or an examination. > > What actions have you taken and what research have you done to answer your > questions and do this work on your own? > > You'll get more and better help if you ask a specific question rather than > simply posting a classroom assignment with the expectation that someone else > will do all of the work for you. > > -- > MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos -- - Hal Wigoda Chicago ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to configure
On Fri, 28 Mar 2014 21:17:39 - Obono I. O wrote: > Please I am new to Centos Linux and need direction on how to configure the > following Your questions read like something for a course or an examination. What actions have you taken and what research have you done to answer your questions and do this work on your own? You'll get more and better help if you ask a specific question rather than simply posting a classroom assignment with the expectation that someone else will do all of the work for you. -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] How to configure
Please I am new to Centos Linux and need direction on how to configure the following How to configure Linux server on VMWARE and statically assigned an IP address in the segment 192.168.13.0/24 with the Windows client being able to communicate with the server. A DHCP server should be running on your Linux box leasing addresses to the local segment. SETUP A DNS name resolution system for resolving addresses. The DNS server must perform forward and reverse lookup operations. Name resolution should be configured to use the above IP addresses and not the localhost (127.0.0.1). Implement a Nagios Network Monitoring system in on the Linux server and demonstrate the complete monitoring of all the services running on the server. In addition, Nagios should be configured to support adaptive and performance data monitoring to both the server and the client in the test network. Client is windows xp Thank you ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Recompiling the Kernel for CentOS 6.5
On 03/28/2014 04:06 PM, Johnny Hughes wrote: > On 03/28/2014 01:36 PM, Akemi Yagi wrote: >> On Fri, Mar 28, 2014 at 11:27 AM, Saket Sinha >> wrote: >> >>> It was pointed out the CentOS-devel mailing list the below link- >>> http://wiki.centos.org/HowTos/Custom_Kernel >>> >>> which allows me to create a rpm for my customized kernel and install it. >>> >>> Now my question is there no method where in I can apply a kernel >>> source tree from kernel.org(maybe 3,x version) and install it on >>> Centos ? >> No problem. Just use kernel-ml/lt from ELRepo: >> >> http://elrepo.org/tiki/kernel-ml >> http://elrepo.org/tiki/kernel-lt >> >> Akemi > I would point out that I have personally been using kernel-ml on all my > main CentOS-6 workstations for months (maybe even years :D) without > major problems. > > The only issue I have ever really had was getting the NVIDIA drivers to > compile post 3.13.x: > > http://centosnow.blogspot.com/2014/02/kernel-ml-nvidia-drivers-and-313x-kernel.html > > You might also need a newer acpi .. check the known issues here: > > http://elrepo.org/tiki/kernel-ml > > But, on both my ThinkPad T520 and Dell M4500N laptops, the kernel-ml > works great for me. > One last thing if using a kernel named anything other than kernel ... edit the file /etc/sysconfig/kernel and find: DEFAULTKERNEL=kernel and change it to: DEFAULTKERNEL=kernel-ml if you want the system to automatically enable the new kernel-ml upon install (in /boot/grub/grub.conf) signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Recompiling the Kernel for CentOS 6.5
On 03/28/2014 01:36 PM, Akemi Yagi wrote: > On Fri, Mar 28, 2014 at 11:27 AM, Saket Sinha wrote: > >> It was pointed out the CentOS-devel mailing list the below link- >> http://wiki.centos.org/HowTos/Custom_Kernel >> >> which allows me to create a rpm for my customized kernel and install it. >> >> Now my question is there no method where in I can apply a kernel >> source tree from kernel.org(maybe 3,x version) and install it on >> Centos ? > No problem. Just use kernel-ml/lt from ELRepo: > > http://elrepo.org/tiki/kernel-ml > http://elrepo.org/tiki/kernel-lt > > Akemi I would point out that I have personally been using kernel-ml on all my main CentOS-6 workstations for months (maybe even years :D) without major problems. The only issue I have ever really had was getting the NVIDIA drivers to compile post 3.13.x: http://centosnow.blogspot.com/2014/02/kernel-ml-nvidia-drivers-and-313x-kernel.html You might also need a newer acpi .. check the known issues here: http://elrepo.org/tiki/kernel-ml But, on both my ThinkPad T520 and Dell M4500N laptops, the kernel-ml works great for me. signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] High load average, low CPU utilization
On Thu, 27 Mar 2014 17:20:22 -0500 Matt Garman wrote: > Any thoughts or ideas? Start digging into your array. Perhaps you're starting to lose a drive and it's running daily integrity checks or something. ie, dropping in and out of the array or the like.. /var/log/messages might have some clues.. (not cat, but tac) tac /var/log/messages | less Don't forget about the crons in /etc/cron* -- You know you're a little fat if you have stretch marks on your car. -- Cyrus, Chicago Reader 1/22/82 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Linux malware attack
On 3/25/2014 10:38, Les Mikesell wrote: > On Fri, Mar 21, 2014 at 4:18 PM, wrote: >>> >>> #5 (non-standard port) is very useful. >> >> Huh! That's the *only* rationale I've ever heard for security through >> obscurity that actually makes sense. > > It's all obscurity even if you think you can call it something else. The original term of art has gotten stretched out of its original shape. "Security through obscurity" originally referred only to practices intended to confer security purely through obscurity. As soon as you learn the secret, the security is gone. Security practitioners started beating "security through obscurity is bad" into people's heads, until now people have this knee-jerk reaction to *any* obscurity, as though obscurity is bad in and of itself. Moving Telnet to port 2323 is security through obscurity. Moving SSH to port is defense in depth, because you still have security after an attacker penetrates the obscuration layer. For another example, think about network switches. They prevent trivial snooping on your neighbor's traffic. ARP poisoning can defeat this security-through-obscurity, but that's no reason for us to all go back to dumb hubs. To the extent that it confers security at all, switched Ethernet is one layer in a good layered defense incorporating switches *and* subnets *and* VLANs *and* encrypted tunnels. Still another example: ALSR. ASLR doesn't prevent buffer overflow attacks, it just makes them a lot harder to craft. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] how to retrieve the info from gnome properties notes?
On 27.03.2014 21:12, Frank Cox wrote: > Right-click on a file, move to properties, click on Notes tab. > > Where is the information that you enter into that screen stored, and > how can I read it? For a file in my homedir, grep says it's in ~/.local/share/gvfs-metadata/home HTH -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Centos 7 Beta iso
Is this possible? -- Cosme Faria Corrêa ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rsyslog not loading relp
On Mon, Nov 4, 2013 at 5:08 PM, Mauricio Tavares wrote:
> On Mon, Nov 4, 2013 at 9:59 AM, Stephen Harris wrote:
>> On Mon, Nov 04, 2013 at 09:49:37AM -0500, Mauricio Tavares wrote:
>>> I really have nobody else but rsyslog.conf here:
>>>
>>> [root@scan log]# ls -ld /etc/rsyslog.*
>>
>> Don't use the "d" flag to "ls"; that'll stop it looking inside
>> directories.
>>
> Sorry; I meant ls -lh
>
>> The debug output showed it reading a file from
>>/etc/rsyslog.d/remote-hosts.conf
>>
>> 1968.099981778:7f2b4eda1700: cfline: '$IncludeConfig /etc/rsyslog.d/*.conf'
>> 1968.100012146:7f2b4eda1700: requested to include config file
>> '/etc/rsyslog.d/remote-hosts.conf'
>>
> You are right. To add insult to injury I created that file (to
> grab the log files from a few other machines. Still need to make it
> nicer, but good enough to test):
>
> [root@scan log]# cat /etc/rsyslog.d/remote-hosts.conf
> # Log remote messages by date & hostname
> $template
> DailyPerHostLogs,"/var/log/syslog/%HOSTNAME%/messages_%$YEAR%-%$MONTH%-%$DAY%.log"
> *.info;mail.none;authpriv.none;cron.none-?DailyPerHostLogs
> [root@scan log]#
>
Resurrecting this old thread of mine, I had time again to play
with this. Still clueless but saw this in /var/log/audit/audit.log:
9069 comm="rsyslogd" src=20514
scontext=unconfined_u:system_r:syslogd_t:s0
tcontext=system_u:object_r:port_t:s0 tclass=tcp_socket
type=SYSCALL msg=audit(1396031288.687:157483): arch=c03e
syscall=49 success=no exit=-13 a0=5 a1=7febd9a35df0 a2=10
a3=7fff9cfb57bc items=0 ppid=9068 pid=9069 auid=1000 uid=0 gid=0
euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=18706
comm="rsyslogd" exe="/sbin/rsyslogd"
subj=unconfined_u:system_r:syslogd_t:s0 key=(null)
type=AVC msg=audit(1396031288.687:157484): avc: denied { name_bind }
for pid=9069 comm="rsyslogd" src=20514
scontext=unconfined_u:system_r:syslogd_t:s0
tcontext=system_u:object_r:port_t:s0 tclass=tcp_socket
type=SYSCALL msg=audit(1396031288.687:157484): arch=c03e
syscall=49 success=no exit=-13 a0=5 a1=7febd9a35d90 a2=1c
a3=7fff9cfb57bc items=0 ppid=9068 pid=9069 auid=1000 uid=0 gid=0
euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=18706
comm="rsyslogd" exe="/sbin/rsyslogd"
subj=unconfined_u:system_r:syslogd_t:s0 key=(null)
What is this
denied { name_bind } for pid=9069 comm="rsyslogd" src=20514
is trying to tell me? I know that syslog is only currently allowed by
selinux to use 514 and 6514,
[root@scan ~]# semanage port -l| grep syslog
syslogd_port_t tcp 6514
syslogd_port_t udp 514, 6514
[root@scan ~]#
But I also thought that there would be a given port after which
selinux did not care. Or something. or it would be rally hard to start
sessions as a lame user connecting to other machines. ;)
Out of desperation, I tried
[root@scan ~]# semanage port -a -t syslogd_port_t -p tcp 20514
Killed
[root@scan ~]#
>
>> --
>>
>> rgds
>> Stephen
>> ___
>> CentOS mailing list
>> CentOS@centos.org
>> http://lists.centos.org/mailman/listinfo/centos
___
CentOS mailing list
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http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Recompiling the Kernel for CentOS 6.5
On Fri, Mar 28, 2014 at 11:27 AM, Saket Sinha wrote: > It was pointed out the CentOS-devel mailing list the below link- > http://wiki.centos.org/HowTos/Custom_Kernel > > which allows me to create a rpm for my customized kernel and install it. > > Now my question is there no method where in I can apply a kernel > source tree from kernel.org(maybe 3,x version) and install it on > Centos ? No problem. Just use kernel-ml/lt from ELRepo: http://elrepo.org/tiki/kernel-ml http://elrepo.org/tiki/kernel-lt Akemi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Recompiling the Kernel for CentOS 6.5
Saket Sinha wrote: > Hi, > > I am working on CentOS 6.5 which has 2.6.32-431 kernel. > > I have a problem with my driver and I need to enable Kernel-Memory > leak in the kernel for which I will have to recompile the kernel. > > I get the kernel source tree from the the source rpm for my running > kernel from below link- > > http://vault.centos.org/6.5/updates/Source/SPackages/kernel-2.6.32-431.11.2.el6.src.rpm > > and I try to build the kernel according to the doc link written for > RHEL-3 - > > http://www.centos.org/docs/rhel-sag-en-3/s1-custom-kernel-modularized.html > > according to which it tells me , after make menuconfig( and > customizing my configuration), I need to follow the following steps- > > 1. make bzImage > 2. make modules > 3. make modules_install > 4. make install > > > but I get errors in the first step only-(make bzImage) But what *are* the errors? > > It was pointed out the CentOS-devel mailing list the below link- > http://wiki.centos.org/HowTos/Custom_Kernel > > which allows me to create a rpm for my customized kernel and install it. > > Now my question is there no method where in I can apply a kernel > source tree from kernel.org(maybe 3,x version) and install it on > Centos ? > I think that the answer's no way. You'd require a new (gnuw? ) glibc, and a ton of other things. If you really need a 3.x kernel, I suggest you try the 7 beta. mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Recompiling the Kernel for CentOS 6.5
Hi, I am working on CentOS 6.5 which has 2.6.32-431 kernel. I have a problem with my driver and I need to enable Kernel-Memory leak in the kernel for which I will have to recompile the kernel. I get the kernel source tree from the the source rpm for my running kernel from below link- http://vault.centos.org/6.5/updates/Source/SPackages/kernel-2.6.32-431.11.2.el6.src.rpm and I try to build the kernel according to the doc link written for RHEL-3 - http://www.centos.org/docs/rhel-sag-en-3/s1-custom-kernel-modularized.html according to which it tells me , after make menuconfig( and customizing my configuration), I need to follow the following steps- 1. make bzImage 2. make modules 3. make modules_install 4. make install but I get errors in the first step only-(make bzImage) It was pointed out the CentOS-devel mailing list the below link- http://wiki.centos.org/HowTos/Custom_Kernel which allows me to create a rpm for my customized kernel and install it. Now my question is there no method where in I can apply a kernel source tree from kernel.org(maybe 3,x version) and install it on Centos ? Regards, Saket Sinha ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] High load average, low CPU utilization
Am 28.03.2014 um 15:30 schrieb Matt Garman : > On Fri, Mar 28, 2014 at 9:01 AM, Mr Queue wrote: > >> On Thu, 27 Mar 2014 17:20:22 -0500 >> Matt Garman wrote: >> >>> Anyone seen anything like this? Any thoughts or ideas? >> >> Post some data.. This public facing? Are you getting sprayed down by >> packets? Array? Soft/hard? Someone have screens >> laying around? Write a trap to catch a process list when the loads spike? >> Look at crontab(s)? User accounts? Malicious >> shells? Any guest containers around? Possibilities are sort of endless >> here. >> > > > Not public facing (no Internet access at all). Linux software RAID-1. No > screen or tmux data. No guest access of any kind. In fact, only three > logged in users. > > I've reviewed crontabs (there are only a couple), and I don't see anything > out of the ordinary. Malicious shells or programs: possibly, but I think > that is highly unlikely... if someone were going to do something malicious, > *this* particular server is not the one to target. - update the os (current is far from 5.7) - partition alignment? - "heuristic/try and error"-approach: disable all crontabs and check the behavior - any load? -- LF ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Mail server - MailScanner/Baruwa/postfix/...
On 28/03/2014 16:01, Rafał Radecki wrote: > Hi All ;) > > Currently I am gathering info about possible components for a mailserver. I > think that MailScanner/Baruwa/postfix will be a good choice. I set up a > similar system (with MailWatch instead of Baruwa) about 3 years ago and had > very good experience ;) What do you think about MailScanner/Baruwa now? Do > you maybe use any good alternatives and can recommend them? > Mailscanner is not recommended with postfix because direct accessing of postfix mail queue, which queue is designed only for access by postfix. -- Levi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] High load average, low CPU utilization
On Thu, 27 Mar 2014 17:20:22 -0500 Matt Garman wrote: > Anyone seen anything like this? Any thoughts or ideas? Post some data.. This public facing? Are you getting sprayed down by packets? Array? Soft/hard? Someone have screens laying around? Write a trap to catch a process list when the loads spike? Look at crontab(s)? User accounts? Malicious shells? Any guest containers around? Possibilities are sort of endless here. -- People often find it easier to be a result of the past than a cause of the future. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] High load average, low CPU utilization
On Fri, Mar 28, 2014 at 9:37 AM, John R. Dennison wrote: > > On Fri, Mar 28, 2014 at 09:30:17AM -0500, Matt Garman wrote: > > > > How can the loadavg shoot up (from ~1 to ~20) without a corresponding > > uptick in number of tasks? > > loadavg is based on number of processes vying for cpu time on the runq; the > number of over-all processes on the system is not really relevant unless > they are all competing for cpu. Is there a way to see this number of processes in the runq? From the shell or programmatically? > What's the i/o wait on the box when you see load spikes? If the box is > i/o bound (indicated by high i/o) the load average will spike due to > processes blocked on i/o cycles. I ran "top -b" directed to a file and captured one of these spikes. Here's a sample from the approximate start, peak, and end of the load spike (respectively): top - 18:40:29 up 14 days, 1:34, 4 users, load average: 0.80, 0.48, 0.29 Tasks: 205 total, 1 running, 204 sleeping, 0 stopped, 0 zombie Cpu(s): 1.2%us, 4.9%sy, 0.0%ni, 92.1%id, 0.0%wa, 0.1%hi, 1.7%si, 0.0%st top - 19:16:00 up 14 days, 2:09, 4 users, load average: 19.67, 19.02, 15.75 Tasks: 203 total, 1 running, 202 sleeping, 0 stopped, 0 zombie Cpu(s): 1.1%us, 4.6%sy, 0.0%ni, 92.3%id, 0.0%wa, 0.2%hi, 1.9%si, 0.0%st top - 20:20:27 up 14 days, 3:14, 4 users, load average: 0.93, 3.58, 8.69 Tasks: 212 total, 1 running, 211 sleeping, 0 stopped, 0 zombie Cpu(s): 1.2%us, 4.8%sy, 0.0%ni, 91.7%id, 0.6%wa, 0.1%hi, 1.6%si, 0.0%st Looks like I collected 17277 total top samples. The max "%wa" over this time was 61.1%, and less than 40 of those samples had "%wa" over 10.0. In other words, over many hours, the system had IOwait over 10% for less than a minute. And note that my load spike lasts for almost two hours. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] High load average, low CPU utilization
From: Matt Garman > I did a little research on the loadavg number, and my understanding is that > it's simply a function of the number of tasks on the system. (There's > some fancy stuff thrown in for exponential decay and curve smoothing and > all that, but it's still based on the number of system tasks.) Any USB device? Each time I access USB disks, load goes through the roof. JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] GLIBC_2.7 not found
> -Original Message- > From: Hersh Parikh [mailto:hershparik...@yahoo.com] > Sent: Friday, March 28, 2014 7:05 AM > To: CentOS mailing list > Subject: Re: [CentOS] GLIBC_2.7 not found > > Sure. Will do so. > > Thanks!! :) > > > > On Friday, 28 March 2014 4:18 PM, Tru Huynh wrote: > > On Fri, Mar 28, 2014 at 02:33:05AM -0700, Hersh Parikh wrote: > > > Hi Guys, > > > > Thanks for your valuable suggestion. I will keep them in mind. I have > > checked whether there is a way to update to Centos to 5.10 without > > damaging the cluster suite and I was suggested the best way is to > > reinstall the entire cluster suite. There are few suggestions around > ... > Next time, just say that your are using Rocks which is managing your > CentOS distribution and not a plain CentOS-5 setup ;) > > Cheers, > > Tru > if you MUST have the cluster accessible by the internet, or even much of the institution's intranet, definitely consider options for keeping it up to date. Or at least it's accessible nodes. I noticed when I looked at rocks[1] a while back, that there are folks in that community which have been _looking_ at how to safely do some updates: https://wiki.rocksclusters.org/wiki/index.php/Software_Update_%28SUWG%29 Note that it looks like they have not updated the page in a while, so I would use on a test cluster and do a small compute job that is in line with what your institution often does first. And of course see if that group could be reinvigorated. :) Oh, and no I don't run a rocks myself, but had looked into one around the time of the formation of the above group. [1] http://www.rocksclusters.org/wordpress/ Even when this disclaimer is not here: I am not a contracting officer. I do not have authority to make or modify the terms of any contract. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] High load average, low CPU utilization
On Fri, Mar 28, 2014 at 10:30 AM, John Doe wrote: > Any USB device? > Each time I access USB disks, load goes through the roof. Nope, it's a rack server in a secure remote location, with no peripherals at all attached. Only attached cables are power and network. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] High load average, low CPU utilization
On Fri, Mar 28, 2014 at 9:01 AM, Mr Queue wrote: > On Thu, 27 Mar 2014 17:20:22 -0500 > Matt Garman wrote: > > > Anyone seen anything like this? Any thoughts or ideas? > > Post some data.. This public facing? Are you getting sprayed down by > packets? Array? Soft/hard? Someone have screens > laying around? Write a trap to catch a process list when the loads spike? > Look at crontab(s)? User accounts? Malicious > shells? Any guest containers around? Possibilities are sort of endless > here. > Not public facing (no Internet access at all). Linux software RAID-1. No screen or tmux data. No guest access of any kind. In fact, only three logged in users. I've reviewed crontabs (there are only a couple), and I don't see anything out of the ordinary. Malicious shells or programs: possibly, but I think that is highly unlikely... if someone were going to do something malicious, *this* particular server is not the one to target. What kind of data would help? I have sar running at a five second interval. I also did a 24-hour run of dstat at a one second interval collecting all information it could. I have tons of data, but not sure how to "distill" it down to a mailing-list friendly format. But a colleague and I reviewed the data, and don't see any correlation with other system data before, during, or after these load spike events. I did a little research on the loadavg number, and my understanding is that it's simply a function of the number of tasks on the system. (There's some fancy stuff thrown in for exponential decay and curve smoothing and all that, but it's still based on the number of system tasks.) I did a simple run of "top -b > top_output.txt" for a 24-hour period, which captured another one of these events. I haven't had a chance to study it in detail, but I expected the number of tasks to shoot up dramatically around the time of these load spikes. The number of tasks remained fairly constant: about 200 +/- 5. How can the loadavg shoot up (from ~1 to ~20) without a corresponding uptick in number of tasks? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] High load average, low CPU utilization
On Fri, Mar 28, 2014 at 09:30:17AM -0500, Matt Garman wrote: > > How can the loadavg shoot up (from ~1 to ~20) without a corresponding > uptick in number of tasks? loadavg is based on number of processes vying for cpu time on the runq; the number of over-all processes on the system is not really relevant unless they are all competing for cpu. What's the i/o wait on the box when you see load spikes? If the box is i/o bound (indicated by high i/o) the load average will spike due to processes blocked on i/o cycles. John -- Worrying works. About 90% of the things I worry about never happen. -- Woody Paige (1946-), sports columnist, on ESPN's "Around the Horn" pgpIL1f1zUKOS.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Mail server - MailScanner/Baruwa/postfix/...
Hi All ;) Currently I am gathering info about possible components for a mailserver. I think that MailScanner/Baruwa/postfix will be a good choice. I set up a similar system (with MailWatch instead of Baruwa) about 3 years ago and had very good experience ;) What do you think about MailScanner/Baruwa now? Do you maybe use any good alternatives and can recommend them? Thanks for all help ;) Best regards, Rafal. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS-announce Digest, Vol 109, Issue 15
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Today's Topics:
1. CESA-2014:0330 Moderate CentOS 6 samba Update (Johnny Hughes)
2. CEBA-2014:0336 CentOS 6 resource-agents Update (Johnny Hughes)
3. CEBA-2014:0337 CentOS 6 syslinux Update (Johnny Hughes)
--
Message: 1
Date: Thu, 27 Mar 2014 12:15:44 +
From: Johnny Hughes
Subject: [CentOS-announce] CESA-2014:0330 Moderate CentOS 6 samba
Update
To: centos-annou...@centos.org
Message-ID: <20140327121544.ga43...@n04.lon1.karan.org>
Content-Type: text/plain; charset=us-ascii
CentOS Errata and Security Advisory 2014:0330 Moderate
Upstream details at : https://rhn.redhat.com/errata/RHSA-2014-0330.html
The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )
i386:
a9408ead92720322953d6138949e0a5570002d467c3d4d3a59993f41066865cb
libsmbclient-3.6.9-168.el6_5.i686.rpm
37a8cfe3e2717f0b88b28bf7f2c3e54f0a04bf2bd60b2bc9f752f2af051be6e8
libsmbclient-devel-3.6.9-168.el6_5.i686.rpm
2cf8d728db2ebee433525623aae4c8b205e1628eb282bf2dc6bed1c8451b22eb
samba-3.6.9-168.el6_5.i686.rpm
e08443f7162cd8b0f922d90d15531be8a2af71e55df1a1b3f835ea70c4afccc4
samba-client-3.6.9-168.el6_5.i686.rpm
b0a555f1b7b13d832a097c1b37a7f0d1e64ff21fa6ee73f7a309d824acdc4183
samba-common-3.6.9-168.el6_5.i686.rpm
57d0967d574ccb82a7c292355f12ba082160d63042352b0759e950706ac7724d
samba-doc-3.6.9-168.el6_5.i686.rpm
d2153ee76d3c197185e29d364a10e27939ec22699bb06e5b0904497c87930b30
samba-domainjoin-gui-3.6.9-168.el6_5.i686.rpm
9dc4ed1d09781b1adc2ec939ab18ead0c3cd32aa9e11eab9bf523e84fd624d0c
samba-swat-3.6.9-168.el6_5.i686.rpm
d610f3fa1f6ea25179105c9b7f0262c1e2498e5e44faad98e7f817e1b09f0b41
samba-winbind-3.6.9-168.el6_5.i686.rpm
a5b7515883a9d8fbe257ded39a4d32dae7ffd314ed1884004d59fd35589cc11f
samba-winbind-clients-3.6.9-168.el6_5.i686.rpm
ed8ee128dcc0709177abb763c2ccc42d1da9a74ad903ee4f7bf2cb2a5c68bc6f
samba-winbind-devel-3.6.9-168.el6_5.i686.rpm
99aedda8cac935709737bc1d3167e8af11dd643d85adf54046174e3ca576c22b
samba-winbind-krb5-locator-3.6.9-168.el6_5.i686.rpm
x86_64:
a9408ead92720322953d6138949e0a5570002d467c3d4d3a59993f41066865cb
libsmbclient-3.6.9-168.el6_5.i686.rpm
72e681dfa4d2c2db3f76844d3de0e299b10cd1e57e0f171847033aa6b102fbdc
libsmbclient-3.6.9-168.el6_5.x86_64.rpm
37a8cfe3e2717f0b88b28bf7f2c3e54f0a04bf2bd60b2bc9f752f2af051be6e8
libsmbclient-devel-3.6.9-168.el6_5.i686.rpm
c412ae6e520a7f1addbfb9306eca1d69cd57c2f9eb71af99b400bb5fd54c7117
libsmbclient-devel-3.6.9-168.el6_5.x86_64.rpm
77dc97558b0f73c7ec796af311fb221234a68b7984d54bfafac0cc6b87208289
samba-3.6.9-168.el6_5.x86_64.rpm
14b976fafe3f070b434e9228017bef1f2e38e541566bf092ab1236965183cdfc
samba-client-3.6.9-168.el6_5.x86_64.rpm
b0a555f1b7b13d832a097c1b37a7f0d1e64ff21fa6ee73f7a309d824acdc4183
samba-common-3.6.9-168.el6_5.i686.rpm
0d95f8c9a58563d3f583c66388b2bcf312d3e0c50031c07de12d7cab0224d6cf
samba-common-3.6.9-168.el6_5.x86_64.rpm
9cd47b7a93c32c8de5cd9e8fe31493433b0ad46d21e5d8d0419af0479500d673
samba-doc-3.6.9-168.el6_5.x86_64.rpm
8e62c900138be389375b2ffeb5740e858fb9d52581b76397e5087ec1eef3f8a3
samba-domainjoin-gui-3.6.9-168.el6_5.x86_64.rpm
32b213f018ab8383966ec4851942d5264e1855ff1ac74e76e7ae563301d435ac
samba-swat-3.6.9-168.el6_5.x86_64.rpm
143154349b732c759ba554cf12b1fa7f03dd36f83f87235f5fb7ef91374e541b
samba-winbind-3.6.9-168.el6_5.x86_64.rpm
a5b7515883a9d8fbe257ded39a4d32dae7ffd314ed1884004d59fd35589cc11f
samba-winbind-clients-3.6.9-168.el6_5.i686.rpm
725ebaa50ad38817d8e99dae2aef2ab7fc872d45ec4f3fb835769b28f8e5c27e
samba-winbind-clients-3.6.9-168.el6_5.x86_64.rpm
ed8ee128dcc0709177abb763c2ccc42d1da9a74ad903ee4f7bf2cb2a5c68bc6f
samba-winbind-devel-3.6.9-168.el6_5.i686.rpm
50796ab27e7f6dcead6290da027a73746484ae866df8974ca8625902eef03bb4
samba-winbind-devel-3.6.9-168.el6_5.x86_64.rpm
770f2d7b5d7d3e4ebede8df0aa8582f09901913985f5177e5c143c21bec42bbf
samba-winbind-krb5-locator-3.6.9-168.el6_5.x86_64.rpm
Source:
61c421ad3d3d1dddf881404b12fc25502becc75d2645e4d160da7426b2ac27a1
samba-3.6.9-168.el6_5.src.rpm
--
Johnny Hughes
CentOS Project { http://www.centos.org/ }
irc: hughesjr, #cen...@irc.freenode.net
--
Message: 2
Date: Thu, 27 Mar 2014 12:42:08 +
From: Johnny Hughes
Subject: [CentOS-announce] CEBA-2014:0336 CentOS 6 resource-agents
Update
To: centos-annou...@centos.org
Message-ID: <20140327124208.ga43...@n04.lon1.karan.org>
Cont
Re: [CentOS] GLIBC_2.7 not found
Sure. Will do so. Thanks!! :) On Friday, 28 March 2014 4:18 PM, Tru Huynh wrote: On Fri, Mar 28, 2014 at 02:33:05AM -0700, Hersh Parikh wrote: > Hi Guys, > > Thanks for your valuable suggestion. I will keep them in mind. I have > checked whether there is a way to update to Centos to 5.10 without > damaging the cluster suite and I was suggested the best way is to > reinstall the entire cluster suite. There are few suggestions around ... Next time, just say that your are using Rocks which is managing your CentOS distribution and not a plain CentOS-5 setup ;) Cheers, Tru -- Tru Huynh (mirrors, CentOS i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos pgpjPkjASLWEc.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] GLIBC_2.7 not found
On Fri, Mar 28, 2014 at 02:33:05AM -0700, Hersh Parikh wrote: > Hi Guys, > > Thanks for your valuable suggestion. I will keep them in mind. I have > checked whether there is a way to update to Centos to 5.10 without > damaging the cluster suite and I was suggested the best way is to > reinstall the entire cluster suite. There are few suggestions around ... Next time, just say that your are using Rocks which is managing your CentOS distribution and not a plain CentOS-5 setup ;) Cheers, Tru -- Tru Huynh (mirrors, CentOS i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B pgpIo6CiGFAXb.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] GLIBC_2.7 not found
Hi Guys, Thanks for your valuable suggestion. I will keep them in mind. I have checked whether there is a way to update to Centos to 5.10 without damaging the cluster suite and I was suggested the best way is to reinstall the entire cluster suite. There are few suggestions around this but they are not tested. So I would not like to take a risk with untested solution. So now I will start looking for feasibility of upgrading the entire suite. This may take sometime but I guess at some stage it needs to be done. On Friday, 28 March 2014 12:11 AM, Steve Clark wrote: On 03/27/2014 08:51 AM, Johnny Hughes wrote: > On 03/27/2014 07:37 AM, Steve Clark wrote: >> On 03/27/2014 08:26 AM, Robert Heller wrote: >>> At Thu, 27 Mar 2014 02:52:51 -0700 (PDT) CentOS mailing list >>> wrote: >>> Hi Alexnder, Thanks for the info. I know its quite old but I cant update as its running with cluster suite and its a production unit.  Moreover its not feasible to upgrade as I have hundreds for apps and data lying on the system. Backing all of this not very continent. >>> First of all, you can update to 5.10 using yum (a 'yum update' will >>> automagically update to 5.10). I don't know how this would affect the >>> clustering, though. >>> Regards Hersh On Thursday, 27 March 2014 1:30 PM, Alexander Dalloz wrote: Am 27.03.2014 06:22, schrieb Hersh Parikh: > Hi Frank, > > Thanks for quick response. Does it mean that I cant have glib 2.7 on > centos 5.4? Right, you can't. If you install a different glibc than the one provided by CentOS 5, then your system will be completely broken. The glibc is a very important and central library set for the system. > Regards > Hersh Btw. CentOS 5.4 is outdated, vulnerable and the current release is 5.10. Please update. Alexander >> As I just pointed out in a previous email to the list - I did a yum upgrade >> from 6.4 to 6.5 and is broke our >> OSPF network. I had to revert back to the last 6.4 kernel to get it working >> again. >> > That certainly does happen and individual packages can be excluded (and > the bugs reported) ... but upgrades still need to happen whenever possible. > > We have released 4 different kernels since 6.5 (so 5 kernels including > the one on the 6.5 iso ... so keep checking if it works). > > Again, these updates happen because there are issues that need to be > fixed, and it is very important that they get applied. > Hi Johnny, First let me thank you and the CentOS team for the great work that you do! Secondly I don't disagree about the need to keep our systems current, but Hersh indicated that this was a clustered production system and I was merely pointing out that there could be breakage by doing an upgrade. Regards, -- Stephen Clark *NetWolves Managed Services, LLC.* Director of Technology Phone: 813-579-3200 Fax: 813-882-0209 Email: steve.cl...@netwolves.com http://www.netwolves.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Chromium 31.0.1650.63-2.el6 for CentOS 6
chromium-33.0.1750.152-2.el6.i686.rpmhttps://docs.google.com/file/d/0B9RlkKQB1POSNzd3WE9qY2ZqVGc/editchromium-33.0.1750.152-2.src.i686.rpmhttps://docs.google.com/file/d/0B9RlkKQB1POSbDhQckF4VVBSaEk/edit -- View this message in context: http://centos.1050465.n5.nabble.com/CentOS-Chromium-31-0-1650-63-2-el6-for-CentOS-6-tp5724635p5725569.html Sent from the CentOS mailing list archive at Nabble.com. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
