Re: [CentOS] Linux on touch screen device
check out http://www.redsleeve.org/ RHEL 6 for ARM Op 30-03-12 07:51, 夜神 岩男 schreef: --- On Fri, 2012/3/30, Nataraj incoming-cen...@rjl.com wrote: I have poked around in google and have seen a number of youtube videos, but my question is whether anyone really has linux running on any kind of tablet or tablet PC device in such a way that the touch screen can be used productively and it won't take a month to get it running? Initially the two applications that are of most interest to me would be a good web browser (maybe chromium) and thunderbird. I would also like to have a decent on screen keyboard which could be used to ssh to servers in an emergency. I've seen instructions for booting linux on various devices, but many people doing this are using keyboards and not touchscreens. Do applications like thunderbird have to be modified in order to work well with a touch screen or is just getting a working driver for the touchpad sufficient? If anyone has any experience with this I would appreciate knowing what hardware your running on and what linux distro/desktop environment you use. I've been interested in devices like the ASUS EP121 which is a dual core I5, so it wouldn't be necessary to have an ARM distribution. Also the newest Asus transformer prime (arm) which I think is about 2 months away sounds interesting. Lots of people do this and lots of (most?) commercial tablet/smartphone systems are based on Linux or a close cousin (Android and iOS come to mind...). As far as non-commercial DIY tablet distros, there are distros and special interest groups within larger distros that focus on this type of deployment. But none of them are CentOS, so I'm not sure why you pinged this mailinglist -- though I think you'd probably find that CentOS installs just fine in most cases, just remember to build whatever graphcs driver you need or your experience might not be good. Go ask over at Fedora, Ubuntu and maybe Mint. Also check out MeeGo and whatnot. As a side note, there is nothing magical about a touchscreen. Touchscreens are just pointing devices like mice and touchpads as far as Linux is concerned, but in this case it is a touchpad that you can see through to a screen on the other side (there is a special case of location logic, of course, so the pointer doesn't continue from last location, but this is a normal case handled by X). So nothing special happens in an application to make it work with a touchscreen because a touchscreen is just creating mouse events the same way your normal mouse would do. The only problem with touchscreens is that small icons are smaller than your finger (well, mine anyway) and so you have to make the desktop a little cartoony to make things work right. Gnome Shell in Fedora is actually not too bad to use with a touchscreen, though it sucks horribly with a mouse IMO, and KDE with large widgets is pretty easy as well. -IY ___ 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] Linux on touch screen device
On 03/29/2012 10:51 PM, 夜神 岩男 wrote: --- On Fri, 2012/3/30, Nataraj incoming-cen...@rjl.com wrote: I have poked around in google and have seen a number of youtube videos, but my question is whether anyone really has linux running on any kind of tablet or tablet PC device in such a way that the touch screen can be used productively and it won't take a month to get it running? Initially the two applications that are of most interest to me would be a good web browser (maybe chromium) and thunderbird. I would also like to have a decent on screen keyboard which could be used to ssh to servers in an emergency. I've seen instructions for booting linux on various devices, but many people doing this are using keyboards and not touchscreens. Do applications like thunderbird have to be modified in order to work well with a touch screen or is just getting a working driver for the touchpad sufficient? If anyone has any experience with this I would appreciate knowing what hardware your running on and what linux distro/desktop environment you use. I've been interested in devices like the ASUS EP121 which is a dual core I5, so it wouldn't be necessary to have an ARM distribution. Also the newest Asus transformer prime (arm) which I think is about 2 months away sounds interesting. Lots of people do this and lots of (most?) commercial tablet/smartphone systems are based on Linux or a close cousin (Android and iOS come to mind...). Thank you. I am aware of android, but my understanding is that the libraries are changed enough that it's not that easy to build random linux software that hasn't been ported. My interests in running linux on a tablet is influenced by: - ability to eventually run wide range of open source linux software, scripting languages like perl, python - privacy issues, prefer not to run software that forces you to allow companies to track keystrokes/location - ability to implement and verify my own security, i.e. my own iptables rules - ability to integrate well into my existing linux based network, i.e. ipad doesn't do this so well As far as non-commercial DIY tablet distros, there are distros and special interest groups within larger distros that focus on this type of deployment. But none of them are CentOS, so I'm not sure why you pinged this mailinglist -- though I think you'd probably find that CentOS installs just fine in most cases, just remember to build whatever graphcs driver you need or your experience might not be good. I pinged this list because I find there is alot of diversity on list and I value the experience that people share here. I am not attached to CentOS and I do run several distros myself. I've seen some threads where people went out and bought devices and never got the touchpad working. In some cases some people got things working and then the manufacturer changed the firmware in later versions and suddenly people that bought them couldn't get them to work. Go ask over at Fedora, Ubuntu and maybe Mint. Also check out MeeGo and whatnot. As a side note, there is nothing magical about a touchscreen. Touchscreens are just pointing devices like mice and touchpads as far as Linux is concerned, but in this case it is a touchpad that you can see through to a screen on the other side (there is a special case of location logic, of course, so the pointer doesn't continue from last location, but this is a normal case handled by X). So nothing special happens in an application to make it work with a touchscreen because a touchscreen is just creating mouse events the same way your normal mouse would do. The only problem with touchscreens is that small icons are smaller than your finger (well, mine anyway) and so you have to make the desktop a little cartoony to make things work right. Gnome Shell in Fedora is actually not too bad to use with a touchscreen, though it sucks horribly with a mouse IMO, and KDE with large widgets is pretty easy as well. That makes sense. I can see though where some desktops/user interfaces will provide a very different user experience than others on a touchpad and similarly for a desktop. I tried unity about 1.5 yrs ago and was very unimpressed using it on a desktop, but it might be good on a tablet. Thank You, Nataraj ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Linux on touch screen device
On 03/29/2012 11:04 PM, Michel Daggelinckx wrote: check out http://www.redsleeve.org/ RHEL 6 for ARM I did notice your previous post. I'm aware that people do get these linux ports up and running on arm devices, but essentially what I am asking here is if I went out and bought any particular arm device, Asus transformer prime, galaxy etc, what's the likelyhood that your port includes a device driver that will work well with the touch screen? I looked at your website a few days ago and saw the low power arm appliance devices, but didn't see anything about supported touch screen devices. nataraj ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] udev works ok in CentOS 6.x??
Hi, On Wed, Mar 28, 2012 at 6:26 PM, carlopmart carlopm...@gmail.com wrote: That's what I like to see, but it doesn't works for me /dev/disk/by-uuid only has uuid for sda and not for sdb and sdc... Do I need to configure something under udev or scsi_id to rescan scsi disks at host startup or something similar??? I had a similar problem with a new usb disk under centos5: the disk (sdb) was not listed under /dev/disk/by-uuid. I had to create the symlink there manually: [root@xen by-uuid]# udevinfo -q all -n sdb P: /block/sdb N: sdb S: disk/by-id/usb-WD_Ext_HDD_1021_574343305330343332373736 [root@xen by-uuid]# ln -s ../../sdb1 usb-WD_Ext_HDD_1021_574343305330343332373736 After that everything worked fine. I have no idea if what I did was somehow wrong and what will happen after next reboot, but the server has been running just fine for months after that operation. Regards, Peter ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Linux on touch screen device
On 03/29/2012 07:56 PM, Nataraj wrote: I have poked around in google and have seen a number of youtube videos, but my question is whether anyone really has linux running on any kind of tablet or tablet PC device in such a way that the touch screen can be used productively and it won't take a month to get it running? Initially the two applications that are of most interest to me would be a good web browser (maybe chromium) and thunderbird. I would also like to have a decent on screen keyboard which could be used to ssh to servers in an emergency. I've seen instructions for booting linux on various devices, but many people doing this are using keyboards and not touchscreens. Do applications like thunderbird have to be modified in order to work well with a touch screen or is just getting a working driver for the touchpad sufficient? If anyone has any experience with this I would appreciate knowing what hardware your running on and what linux distro/desktop environment you use. I've been interested in devices like the ASUS EP121 which is a dual core I5, so it wouldn't be necessary to have an ARM distribution. Also the newest Asus transformer prime (arm) which I think is about 2 months away sounds interesting. The CentOS Project would LOVE to obtain a Hardware Donation from one (or more) of the companies who have x86, x86_64, or ARM tablets available. We would make getting working drivers for the touch screen a priority if we had hardware to work with. If there are any tablet manufactures on the list ... and if you are willing to provide a hardware donation of any architecture tablet (x86, x86_64, ARM, or PPC) to the CentOS Project then contact me off list. Thanks, Johnny Hughes signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] my spammer list
On Fri, March 30, 2012 5:26 am, Nataraj wrote: So for example if I assign an email address for incoming mail from a mailing list and then setup a whitelist entry that only allows that address to receive email from the mailservers that serve that mailing list and then blacklist all other incoming mail to that address it is very effective so, for example, if you unsubscribed from this list and, after that, I wanted either to: 1) contact you directly to know more about your antispam setup 2) offer you a job as system administrator since you are so skilled and I sent such email to the address you use to post to this list (the only contact info I have), not only you would never receive it, but (if you implement this server-wide) ALL your email USERS would stop receiving legitimate email from me? Am I missing something? If not, yours is a smart solution, indeed. marco http://freesoftware.zona-m.net ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Dual Monitor setup on CentOS 6?
Hi. Is anyone here running CentOS 6 with dual monitors configured as a single X Screen? I'm trying such a setup on version 5 (again), using NVIDIA TwinView, and it works in many ways, but there are a number of problems that means it's not too usable - the most important one being that there appears to be no way to control which of the displays new applications/windows will appear on. I mean, I don't necessarily need to be able to configure this or anything, but I would at least expect programs to open on the monitor that displaying the menu item or icon or terminal or whatever used for startup, but often they end up on the other one. So I guess my question is, would upgrading to version 6 help? - Toralf This e-mail, including any attachments and response string, may contain proprietary information which is confidential and may be legally privileged. It is for the intended recipient only. If you are not the intended recipient or transmission error has misdirected this e-mail, please notify the author by return e-mail and delete this message and any attachment immediately. If you are not the intended recipient you must not use, disclose, distribute, forward, copy, print or rely on this e-mail in any way except as permitted by the author. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dual Monitor setup on CentOS 6?
Hello Toralf, On Fri, 30 Mar 2012 09:55:45 +0200 Toralf Lund toralf.l...@pgs.com wrote: Hi. Is anyone here running CentOS 6 with dual monitors configured as a single X Screen? I'm trying such a setup on version 5 (again), using NVIDIA TwinView, and it works in many ways, but there are a number of problems that means it's not too usable - the most important one being that there appears to be no way to control which of the displays new applications/windows will appear on. I mean, I don't necessarily need to be able to configure this or anything, but I would at least expect programs to open on the monitor that displaying the menu item or icon or terminal or whatever used for startup, but often they end up on the other one. So I guess my question is, would upgrading to version 6 help? Works very well here w/ a Dell E6500 laptop and Intel internal graphics chip (laptop lid and hdmi-connected lcd). Not sure if that helps you though! Regards, -- wwp signature.asc Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] About Postfix mail server using dovecot and courier imap configuration
Dear Friends, I am new in server side so i want to configure new Postfix mail server using dovecot or courier imap configuration . But I want courier for configure server . I do not want any database for store mails and users information. It just like create users then all mail goes to users home folder. Like useradd /home/jiten/ then all mail store in my jiten folders. Please help me it is urgent for me. -- Regards Jitendra Jha ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] About Postfix mail server using dovecot and courier imap configuration
From: jiten jha jitenjh...@googlemail.com I am new in server side so i want to configure new Postfix mail server using dovecot or courier imap configuration . But I want courier for configure server . I do not want any database for store mails and users information. It just like create users then all mail goes to users home folder. Like useradd /home/jiten/ then all mail store in my jiten folders. Please help me it is urgent for me. You could start with the wiki: http://wiki.centos.org/HowTos/postfix JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS 6.2 x86_64 Squirrelmail Problem
Greetings Friends, is any one knows why i see squirrelmail login interface like below Live Example Can Be Seen Here: https://mail.digital-infotech.com/webmail i have tried to install configure from source as well rather than RPM but all the same.security permissions have been verified also. and i have no clue any more. help would be greatly appreciated Thanks / Regards bgcolor=#ff border=0 cellspacing=0 cellpadding=0 width=100% SquirrelMail version 1.4.22-2.el6 By the SquirrelMail Project Team bgcolor=#ff border=0 width=350 bgcolor=#dcdcdcDigital Infotech Limited Login bgcolor=#ff bgcolor=#ff border=0 width=100% width=30%Name: width=70% width=30%Password: width=70% Thanks / Regards Prabhpal S. Mavi Email: prabh...@digital-infotech.net Sent Through .Net Domain From iPhone ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 6.2 x86_64 Squirrelmail Problem
On 03/30/2012 05:41 AM, Prabhpal S. Mavi wrote: Greetings Friends, is any one knows why i see squirrelmail login interface like below Live Example Can Be Seen Here: https://mail.digital-infotech.com/webmail i have tried to install configure from source as well rather than RPM but all the same.security permissions have been verified also. and i have no clue any more. help would be greatly appreciated Thanks / Regards bgcolor=#ff border=0 cellspacing=0 cellpadding=0 width=100% SquirrelMail version 1.4.22-2.el6 By the SquirrelMail Project Team bgcolor=#ff border=0 width=350 bgcolor=#dcdcdcDigital Infotech Limited Login bgcolor=#ff bgcolor=#ff border=0 width=100% width=30%Name: width=70% width=30%Password: width=70% Thanks / Regards Prabhpal S. Mavi Email: prabh...@digital-infotech.net Sent Through .Net Domain From iPhone The problem is with spaces (there is a space between the and the bgcolor= so it is not a proper tag. Since this is a php file, I would assume that something is causing the spaces to be there and that the something would be that you are missing some module or setting in php and because of it, you are missing some variables, etc. There also seem to be several tags that are empty ... (the things that look like ) Try with SELinux off to see if that is a problem and if it is then relabel to get the proper settings. Did you follow any readmes that might have been in the documentation? signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 6.2 x86_64 Squirrelmail Problem
On 03/30/2012 05:51 AM, Johnny Hughes wrote: On 03/30/2012 05:41 AM, Prabhpal S. Mavi wrote: Greetings Friends, is any one knows why i see squirrelmail login interface like below Live Example Can Be Seen Here: https://mail.digital-infotech.com/webmail i have tried to install configure from source as well rather than RPM but all the same.security permissions have been verified also. and i have no clue any more. help would be greatly appreciated Thanks / Regards bgcolor=#ff border=0 cellspacing=0 cellpadding=0 width=100% SquirrelMail version 1.4.22-2.el6 By the SquirrelMail Project Team bgcolor=#ff border=0 width=350 bgcolor=#dcdcdcDigital Infotech Limited Login bgcolor=#ff bgcolor=#ff border=0 width=100% width=30%Name: width=70% width=30%Password: width=70% Thanks / Regards Prabhpal S. Mavi Email: prabh...@digital-infotech.net Sent Through .Net Domain From iPhone The problem is with spaces (there is a space between the and the bgcolor= so it is not a proper tag. Since this is a php file, I would assume that something is causing the spaces to be there and that the something would be that you are missing some module or setting in php and because of it, you are missing some variables, etc. There also seem to be several tags that are empty ... (the things that look like ) Try with SELinux off to see if that is a problem and if it is then relabel to get the proper settings. Did you follow any readmes that might have been in the documentation? 1. Turn off mbstring-overload by editing your /etc/php.ini file and setting: mbstring.func_overload = 0 restart httpd 2. have you run the config.pl file? signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 6.2 x86_64 Squirrelmail Problem
Hello Mr. Johnny This is brilliant!! you are so knowledgeable and professional. Your solution fixed the problem right away. mbstring.func_overload = 0 It was like this: mbstring.func_overload = 2 Thanks / Thanks / Thanks / Thanks / Thanks / Thanks / Thanks / Thanks / Thanks Regards / Prabhpal On 03/30/2012 05:41 AM, Prabhpal S. Mavi wrote: Greetings Friends, is any one knows why i see squirrelmail login interface like below Live Example Can Be Seen Here: https://mail.digital-infotech.com/webmail i have tried to install configure from source as well rather than RPM but all the same.security permissions have been verified also. and i have no clue any more. help would be greatly appreciated Thanks / Regards bgcolor=#ff border=0 cellspacing=0 cellpadding=0 width=100% SquirrelMail version 1.4.22-2.el6 By the SquirrelMail Project Team bgcolor=#ff border=0 width=350 bgcolor=#dcdcdcDigital Infotech Limited Login bgcolor=#ff bgcolor=#ff border=0 width=100% width=30%Name: width=70% width=30%Password: width=70% Thanks / Regards Prabhpal S. Mavi Email: prabh...@digital-infotech.net Sent Through .Net Domain From iPhone The problem is with spaces (there is a space between the and the bgcolor= so it is not a proper tag. Since this is a php file, I would assume that something is causing the spaces to be there and that the something would be that you are missing some module or setting in php and because of it, you are missing some variables, etc. There also seem to be several tags that are empty ... (the things that look like ) Try with SELinux off to see if that is a problem and if it is then relabel to get the proper settings. Did you follow any readmes that might have been in the documentation? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Thanks / Regards Prabhpal S. Mavi Email: prabh...@digital-infotech.net ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] my spammer list
On 30.3.2012 05:26, Nataraj wrote: The way that I finally got rid of all the residual spam that makes it through greylisting, SPF, spamassassin, clamav is to handout unique mail addresses and use black/whitelists. So for example if I assign an email address for incoming mail from a mailing list and then setup a whitelist entry that only allows that address to receive email from the mailservers that serve that mailing list and then blacklist all other incoming mail to that address it is very effective. But how to tell which mailservers are serving that mailing list? That's the thing SPF or similar is supposed to do, isn't it? Don't tell me you are looking at the MX Records! Incoming and Outgoing Mailservers are not the same necessarily. -- Kind Regards, Markus Falb signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dual Monitor setup on CentOS 6?
On 03/30/2012 10:55 AM, Toralf Lund wrote: Hi. Is anyone here running CentOS 6 with dual monitors configured as a single X Screen? I'm trying such a setup on version 5 (again), using NVIDIA TwinView, and it works in many ways, but there are a number of problems that means it's not too usable - the most important one being that there appears to be no way to control which of the displays new applications/windows will appear on. I mean, I don't necessarily need to be able to configure this or anything, but I would at least expect programs to open on the monitor that displaying the menu item or icon or terminal or whatever used for startup, but often they end up on the other one. It's the window's manager job to do that using the XINERAMA X extension. see http://en.wikipedia.org/wiki/Xinerama For example in centos 6 KDE the window manager redirects the new windows in the display that have the mouse in, so if I start an application and quickly enough move the mouse to the desired screen, the application window displays in that screen. Lec So I guess my question is, would upgrading to version 6 help? - Toralf This e-mail, including any attachments and response string, may contain proprietary information which is confidential and may be legally privileged. It is for the intended recipient only. If you are not the intended recipient or transmission error has misdirected this e-mail, please notify the author by return e-mail and delete this message and any attachment immediately. If you are not the intended recipient you must not use, disclose, distribute, forward, copy, print or rely on this e-mail in any way except as permitted by the author. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Lec ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] my spammer list
On 3/30/2012 7:48 AM, Markus Falb wrote: On 30.3.2012 05:26, Nataraj wrote: The way that I finally got rid of all the residual spam that makes it through greylisting, SPF, spamassassin, clamav is to handout unique mail addresses and use black/whitelists. So for example if I assign an email address for incoming mail from a mailing list and then setup a whitelist entry that only allows that address to receive email from the mailservers that serve that mailing list and then blacklist all other incoming mail to that address it is very effective. But how to tell which mailservers are serving that mailing list? That's the thing SPF or similar is supposed to do, isn't it? Don't tell me you are looking at the MX Records! Incoming and Outgoing Mailservers are not the same necessarily. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos clients...senders...helo... from the logs and the mailings. Usually in the bulk commercial 'legitimate' spammers there entire system is configured correctly, as are their headers, to avoid spamassassin and common mail screenings. From that you slowly whittle them down. From this I have found certain bulk mailers, especially political and real estate, have a certain grouping of outgoing relays...like 'ala'mail.net, 'ala'mode.com, vocus.com, vocsmail.com, etc... and once I got all the others out it was very evident based on the layout of the mail who is sending it...basically like 4 or 5 types... Kinda cool to start seeing the patterns. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dual Monitor setup on CentOS 6?
On 30/03/12 15:21, Alexandru Chiscan wrote: On 03/30/2012 10:55 AM, Toralf Lund wrote: Hi. Is anyone here running CentOS 6 with dual monitors configured as a single X Screen? I'm trying such a setup on version 5 (again), using NVIDIA TwinView, and it works in many ways, but there are a number of problems that means it's not too usable - the most important one being that there appears to be no way to control which of the displays new applications/windows will appear on. I mean, I don't necessarily need to be able to configure this or anything, but I would at least expect programs to open on the monitor that displaying the menu item or icon or terminal or whatever used for startup, but often they end up on the other one. It's the window's manager job to do that using the XINERAMA X extension. see http://en.wikipedia.org/wiki/Xinerama I knew that. The question is, do they? I mean they as in the window managers supplied with CentOS 6... For example in centos 6 KDE the window manager redirects the new windows in the display that have the mouse in, so if I start an application and quickly enough move the mouse to the desired screen, the application window displays in that screen. OK. So kwm or whatever it's called these days does the right thing then. Unfortunately, I'm using GNOME. I've tried both Metacity and Compiz on CentOS 5; the former appears to have *some* Xinerama support, but where it places new windows seems completely arbitrary. Compiz won't even start - it just tells me that Xinerama is not supported. Thanks, - Toralf Lec So I guess my question is, would upgrading to version 6 help? - Toralf This e-mail, including any attachments and response string, may contain proprietary information which is confidential and may be legally privileged. It is for the intended recipient only. If you are not the intended recipient or transmission error has misdirected this e-mail, please notify the author by return e-mail and delete this message and any attachment immediately. If you are not the intended recipient you must not use, disclose, distribute, forward, copy, print or rely on this e-mail in any way except as permitted by the author. ___ 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] RAID-10 vs Nested (RAID-0 on 2x RAID-1s)
- Original Message - On Thu, 2012-03-29 at 16:49 -0500, Tim Nelson wrote: [root@c6r10tester ~]# mdadm --detail /dev/md1 /dev/md1: Version : 1.1 Creation Time : Thu Mar 29 16:14:17 2012 Raid Level : raid10 ... Layout : near=2 Chunk Size : 512K ... Am I overthinking this? Does the kernel handle the mirror/stripe configuration under the hood, simply presenting me with a magical RAID10 array? Or, is this something different and I really should be performing the RAID creation manually as noted in option #1? Two resources to look at are: 1) Wikipedia Linux MD RAID 10 http://en.wikipedia.org/wiki/Non-standard_RAID_levels#Linux_MD_RAID_10 2) mdadm manpage section for --layout= (the raid10 part) Finally, the layout options for RAID10 are one of ’n’, ’o’ or ’f’... The key to understanding your setup is mdadm --detail Layout: near=2. The cited Wikipedia reference for a standard near layout describes your situation. This is exactly the info I needed. Thank you for pointing me to it! --tim ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] SMTP Port 465 - Postfix
Greetings Dear Friends ! i have Postfix Running On CentOS 6.2 x86_64, TLS/SASL is already configured and working. Can anyone please assist me how to configure Postfix to listen and accept TLS connections on smtp:465? Thanks / Regards Prabhpal S. Mavi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SMTP Port 465 - Postfix
From: Prabhpal S. Mavi prabh...@digital-infotech.net i have Postfix Running On CentOS 6.2 x86_64, TLS/SASL is already configured and working. Can anyone please assist me how to configure Postfix to listen and accept TLS connections on smtp:465? Google says to look in master.cf JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SMTP Port 465 - Postfix
In /etc/postfix/master.cf uncomment the line that starts #smtps. One thing I also do is to listen on an alternate socket way up high, like 5, to bypass ISP's that restrict port 25 and 465 to their own servers. This way I can send mail through my server when I am on a restricted network like ATT wireless with my smart phone. Just make a copy of the standard smtp line, call it smtp-alt, then define smtp-alt to the port you want in /etc/services. Mike On 03/30/2012 10:51 AM, Prabhpal S. Mavi wrote: Greetings Dear Friends ! i have Postfix Running On CentOS 6.2 x86_64, TLS/SASL is already configured and working. Can anyone please assist me how to configure Postfix to listen and accept TLS connections on smtp:465? Thanks / Regards Prabhpal S. Mavi ___ 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] CentOS-announce Digest, Vol 85, Issue 15
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Today's Topics:
1. CEEA-2012:0435 CentOS 6 gdm Update (Johnny Hughes)
--
Message: 1
Date: Thu, 29 Mar 2012 18:24:34 +
From: Johnny Hughes joh...@centos.org
Subject: [CentOS-announce] CEEA-2012:0435 CentOS 6 gdm Update
To: centos-annou...@centos.org
Message-ID: 20120329182434.ga24...@chakra.karan.org
Content-Type: text/plain; charset=us-ascii
CentOS Errata and Enhancement Advisory 2012:0435
Upstream details at : https://rhn.redhat.com/errata/RHEA-2012-0435.html
The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )
i386:
86a8697001bce08153785f2f35e597adad90ffc131d5ff42f733112292412f5c
gdm-2.30.4-33.el6_2.i686.rpm
a88b0a58182334360e5812072547dd70e67bc35bdfd05a0c82aed964cf368be1
gdm-libs-2.30.4-33.el6_2.i686.rpm
427ee92d1fc1a9d5eabf2103b547b101b1b0f56365df6467ed64a07ce98659da
gdm-plugin-fingerprint-2.30.4-33.el6_2.i686.rpm
55d9c767a483c9c40878804bbfa0f351bd9f95bd7b1c4f9d6fff7c8cd0eb92e1
gdm-plugin-smartcard-2.30.4-33.el6_2.i686.rpm
87030a80cbc1a333782a7cf197b0d48d0403320e5278dcd2a08839a87eb00dcd
gdm-user-switch-applet-2.30.4-33.el6_2.i686.rpm
x86_64:
c2acd45532a6d500c59de483772e1808985b0ddea090cdfd44dbe1cf6f3f651e
gdm-2.30.4-33.el6_2.x86_64.rpm
a88b0a58182334360e5812072547dd70e67bc35bdfd05a0c82aed964cf368be1
gdm-libs-2.30.4-33.el6_2.i686.rpm
403d9d7a7757a847a2d068eea21baa8a2c8e84dcb8dc2a88771d214011a9b70e
gdm-libs-2.30.4-33.el6_2.x86_64.rpm
ac8fb81e1c351e9a72caf268966996f3923e73b845899979bdffa1170ec0ae68
gdm-plugin-fingerprint-2.30.4-33.el6_2.x86_64.rpm
2516b124ed4e79d2fc1abb5da24685bfd28916491cb19ed7210d92d8a4517cf4
gdm-plugin-smartcard-2.30.4-33.el6_2.x86_64.rpm
2c13e7596ec8d187f4a14a051574bbe945ee6ee1e5ec946e3674071b09e4c669
gdm-user-switch-applet-2.30.4-33.el6_2.x86_64.rpm
Source:
4365957ce99e24c8201e29c3d417db33b2ea03729ac77f90decc1a7096d2aa99
gdm-2.30.4-33.el6_2.src.rpm
--
Johnny Hughes
CentOS Project { http://www.centos.org/ }
irc: hughesjr, #cen...@irc.freenode.net
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Re: [CentOS] SMTP Port 465 - Postfix
Hi Dear All, Just updating with the post, following configured Postfix to listen on Port 587. Yet to find out, how to enable 465. submission inet n - n - - smtpd -o smtpd_tls_security_level=encrypt -o smtpd_sasl_auth_enable=yes -o smtpd_client_restrictions=permit_sasl_authenticated,reject -o milter_macro_daemon_name=ORIGINATING Thanks / Regards From: Prabhpal S. Mavi prabh...@digital-infotech.net i have Postfix Running On CentOS 6.2 x86_64, TLS/SASL is already configured and working. Can anyone please assist me how to configure Postfix to listen and accept TLS connections on smtp:465? Google says to look in master.cf JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Thanks / Regards Prabhpal S. Mavi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SMTP Port 465 - Postfix
On 3/30/2012 12:49 PM, Prabhpal S. Mavi wrote: Hi Dear All, Just updating with the post, following configured Postfix to listen on Port 587. Yet to find out, how to enable 465. submission inet n - n - - smtpd -o smtpd_tls_security_level=encrypt -o smtpd_sasl_auth_enable=yes -o smtpd_client_restrictions=permit_sasl_authenticated,reject -o milter_macro_daemon_name=ORIGINATING port 465 is default for smtps...not smtp smtps inet n - n - - smtpd -o smtpd_tls_wrappermode=yes open it on your iptables too ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] IPv6 routing failure on CentOS5
I can't get IPv6 routing to configure correctly despite everything I've read saying it should This is my network config on a fully-updated CentOS 5.8 system: # cat /etc/sysconfig/network NETWORKING=yes NETWORKING_IPV6=yes HOSTNAME=my.hostname.com GATEWAY=aaa.bbb.ccc.ddd IPV6_DEFAULTGW=2a02:.::1 IPV6_DEFAULTDEV=eth0 # cat /etc/sysconfig/network-scripts/ifcfg-eth0 ONBOOT=yes DEVICE=eth0 BOOTPROTO=static HWADDR=52:54:00:68:42:1E IPADDR=000.111.222.333 NETMASK=255.255.255.128 IPV6INIT=yes IPV6ADDR=2a02:.:178:209:50:230:0/112 Attempts to use the IPv6 address fail. For example: # ping6 -c 2 2a00:1450:4016:800::1013 connect: Network is unreachable However it works if I manually enter these 2 lines: # route -A inet6 add ::/0 dev eth0 # ip -6 route add 2000::/3 via 2a02:.::1 metric 1 # ping6 -c 2 2a00:1450:4016:800::1013 PING 2a00:1450:4016:800::1013(2a00:1450:4016:800::1013) 56 data bytes 64 bytes from 2a00:1450:4016:800::1013: icmp_seq=0 ttl=57 time=91.2 ms 64 bytes from 2a00:1450:4016:800::1013: icmp_seq=1 ttl=57 time=95.3 ms These are the routing table entries added by my hand-added configuration: 2000::/3 via 2a02:418:6a04::1 dev eth0 metric 1 expires 21333054sec mtu 1500 advmss 1440 hoplimit 4294967295 default dev eth0 metric 1 expires 21333054sec mtu 1500 advmss 1440 hoplimit 4294967295 So... given the parameters set in my config files, why are the CentOS v5.8 initscripts not configuring my IPv6 routing correctly? One more thing. I get this output on network start up (prior to hand-configuration): Bringing up interface eth0: WARN : [ipv6_add_route] 'No route to host' adding route '::/0' via gateway '2a02:.::1' through device 'eth0' Thanks. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Centos6 iptables startup vs. restart?
What is different about the initial startup of iptables than 'service iptables restart' (and different from C5)? I want to use iptables port redirection to send port 80 to 8080 so a java web service doesn't have to start as root. On C5 it worked to give the iptables commmands, then 'iptables save', and from then on it would automatically work when iptables started after a reboot. With C6, I have the expected entries in /etc/sysconfig/iptables and they are loaded after 'service iptables restart', but the initial startup is doing something else. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] IPv6 routing failure on CentOS5
Nevermind. I copied my ISP's line verbatim, including the erroneous /112 mask. On Friday, March 30, 2012 1:27pm, Steve Snyder swsny...@snydernet.net said: I can't get IPv6 routing to configure correctly despite everything I've read saying it should This is my network config on a fully-updated CentOS 5.8 system: # cat /etc/sysconfig/network NETWORKING=yes NETWORKING_IPV6=yes HOSTNAME=my.hostname.com GATEWAY=aaa.bbb.ccc.ddd IPV6_DEFAULTGW=2a02:.::1 IPV6_DEFAULTDEV=eth0 # cat /etc/sysconfig/network-scripts/ifcfg-eth0 ONBOOT=yes DEVICE=eth0 BOOTPROTO=static HWADDR=52:54:00:68:42:1E IPADDR=000.111.222.333 NETMASK=255.255.255.128 IPV6INIT=yes IPV6ADDR=2a02:.:178:209:50:230:0/112 Attempts to use the IPv6 address fail. For example: # ping6 -c 2 2a00:1450:4016:800::1013 connect: Network is unreachable However it works if I manually enter these 2 lines: # route -A inet6 add ::/0 dev eth0 # ip -6 route add 2000::/3 via 2a02:.::1 metric 1 # ping6 -c 2 2a00:1450:4016:800::1013 PING 2a00:1450:4016:800::1013(2a00:1450:4016:800::1013) 56 data bytes 64 bytes from 2a00:1450:4016:800::1013: icmp_seq=0 ttl=57 time=91.2 ms 64 bytes from 2a00:1450:4016:800::1013: icmp_seq=1 ttl=57 time=95.3 ms These are the routing table entries added by my hand-added configuration: 2000::/3 via 2a02:418:6a04::1 dev eth0 metric 1 expires 21333054sec mtu 1500 advmss 1440 hoplimit 4294967295 default dev eth0 metric 1 expires 21333054sec mtu 1500 advmss 1440 hoplimit 4294967295 So... given the parameters set in my config files, why are the CentOS v5.8 initscripts not configuring my IPv6 routing correctly? One more thing. I get this output on network start up (prior to hand-configuration): Bringing up interface eth0: WARN : [ipv6_add_route] 'No route to host' adding route '::/0' via gateway '2a02:.::1' through device 'eth0' Thanks. ___ 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] transition to ip6
I imagine some day in the near future there will be a switch to ipv6. I cannot imagine ever remembering the ip address then...crazy. My question, since i have never done ip6 stuff, is what does that mean on my webservers? Would I just need to replace my ip4 with ip6 in my eths, bonds, bridges, and configuration files...and copy out my iptables to ip6tables, and change the dns servers? all that does not sound to harsh. anything especially daunting to make that switch (save from someone having to do that on 100 computers really fast!!) -bob ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] transition to ip6
On Fri, Mar 30, 2012 at 02:23:55PM -0400, Bob Hoffman wrote: My question, since i have never done ip6 stuff, is what does that mean on my webservers? For modern software, not too much, really! Would I just need to replace my ip4 with ip6 in my eths, bonds, bridges, and configuration files...and copy out my iptables to ip6tables, and change the dns servers? You can test it today; if your ISP doesn't provide native IPv6 then you can get a tunnel (eg from tunnelbroker.net) for free. Then you can run IPv4 and IPv6 at the same time and see how easy it is. It's really easy :-) I have a linode and a Panix v-colo with native IPv6, and my home network with an IPv6 HE tunnel. This email _should_ go via IPv6 from home to linode, and then probably via IPv4 to the list server... unless that is also IPv6 enabled! Most of the time (eg surfing the net) I don't even know if my traffic is using IPv4 or IPv6. -- rgds Stephen ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] my spammer list
On 03/30/2012 04:48 AM, Markus Falb wrote: On 30.3.2012 05:26, Nataraj wrote: The way that I finally got rid of all the residual spam that makes it through greylisting, SPF, spamassassin, clamav is to handout unique mail addresses and use black/whitelists. So for example if I assign an email address for incoming mail from a mailing list and then setup a whitelist entry that only allows that address to receive email from the mailservers that serve that mailing list and then blacklist all other incoming mail to that address it is very effective. But how to tell which mailservers are serving that mailing list? That's the thing SPF or similar is supposed to do, isn't it? Don't tell me you are looking at the MX Records! Incoming and Outgoing Mailservers are not the same necessarily. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos My white/blacklisting software happens to allow regular expressions as well as IP addresses and has the capability to match on one or more of the following fields in the message: envelope sender envelope recipient helo name remote IP address Remote hostname When it matches on remote hostname, it does a reverse dns lookup. I already have my mailserver configured so that It will not accept mail from any site for which the forward and reverse dns entries do not match. So I can create a whitelist entry which allows .*\.centos\.org or .*@centos\.org. Yes, it limits the ability for people to contact me off list, but people that need to reach me seem to find a way. There is a price for everything. If you happen to own a 3 letter domain name that was around from the days of the original arpanet, and you have had a bad enough spam problem, then it may be worthwhile to pay that price. I am on a fair number of mailing lists and find that spammers do harvest addresses on these lists. Generally when I join a new list, I just create the unique email address, but don't do the whitelist/blacklist thing until I start seeing spam to that address, so I can tell which lists or people that I gave my email address too was harvested or leaked. I've see my email address leaked to spammers from presumably secure sites like major banks and financial institutions, various websites where I've made online purchases, etc. It is unbelievable how insecure these supposedly secure sites are. On two occasions I reported to a major financial institution that they had leaked my email address and after several months got back a notice that they had found that the security of their systems had been compromised, but assured me that it affected only my email address and not my bank account or other personal information. Yes it is the case that I generally do not recommend this technique to inexperienced user. For my users I do the best I can with greylisting, spamassassin, etc. For users who do not highly publicize their email address this is usually enough. I have one client though that advertises their customer service email address and has a massive spam problem. I told them that the best way to solve that was to create a properly designed web page for customer service requests that was protected from automated submission methods. There are also tools that implement auto-whitelisting, that will send out an auto-response requiring the user to send back a confirmation or click on a web page and be automatically whitelisted. Some people are strongly opposed to this method because it will generate more spam to what ever return address is given in the spam that you do receive. This would not work so well for things like receiving a confirmation message for your online purchase from amazon.com. Nataraj Nataraj ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SMTP Port 465 - Postfix
On 03/30/2012 08:22 AM, Mike McCarthy wrote: In /etc/postfix/master.cf uncomment the line that starts #smtps. One thing I also do is to listen on an alternate socket way up high, like 5, to bypass ISP's that restrict port 25 and 465 to their own servers. This way I can send mail through my server when I am on a restricted network like ATT wireless with my smart phone. Just make a copy of the standard smtp line, call it smtp-alt, then define smtp-alt to the port you want in /etc/services. Mike Some versions of outlook or outlook express do not handle 5 digit smtp port numbers, so if you have any non-linux mail clients, you might want to stay with a 4 digit port number. Nataraj ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] transition to ip6
On 03/30/2012 11:23 AM, Bob Hoffman wrote: I imagine some day in the near future there will be a switch to ipv6. I cannot imagine ever remembering the ip address then...crazy. My question, since i have never done ip6 stuff, is what does that mean on my webservers? Would I just need to replace my ip4 with ip6 in my eths, bonds, bridges, and configuration files...and copy out my iptables to ip6tables, and change the dns servers? all that does not sound to harsh. anything especially daunting to make that switch (save from someone having to do that on 100 computers really fast!!) -bob ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos We've been running out of IPV4 address and needing to convert someday soon for the last 10 years..., but yet the vast majority of broadband providers and even most ISP's don't support it yet. Nataraj ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos6 iptables startup vs. restart?
On 03/30/2012 10:53 AM, Les Mikesell wrote: What is different about the initial startup of iptables than 'service iptables restart' (and different from C5)? I want to use iptables port redirection to send port 80 to 8080 so a java web service doesn't have to start as root. On C5 it worked to give the iptables commmands, then 'iptables save', and from then on it would automatically work when iptables started after a reboot. With C6, I have the expected entries in /etc/sysconfig/iptables and they are loaded after 'service iptables restart', but the initial startup is doing something else. There is a bug that has been around for years in iptables. I'm not sure if it's a timing problem or what, but I've seen it in fedora, centos, and ubuntu where certain rules appear not to work when configured inititally. I've even dumped out the running iptables list after it was restarted and diffed it with the saved one and the rules are all there. It may be specific to NAT or possibly related to an interaction between NAT and connection tracking. Somewhere I remember seeing this problem documentated as a known bug in iptables. There are a few bugs listed in: http://bugzilla.netfilter.org/buglist.cgi?quicksearch=nat , though I'm not sure if any of them quite describes this problem. Nataraj ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] NFS Hanging Under Heavy Load
UPDATE I rolled a new kernel that's identical to the stock CentOS 2.6.32-220.el6 kernel with the exception of the new idmapper being enabled. Unfortunately there's been no improvement. Did you get a chance to try the RHEL kernel? -Aaron On Fri, Mar 16, 2012 at 7:01 PM, Ray Van Dolson ra...@bludgeon.org wrote: On Fri, Mar 16, 2012 at 01:33:54PM -0700, Aaron Blew wrote: Hello all, I'm currently experiencing an issue with an NFS server I've built (a Dell R710 with a Dell PERC H800/LSI 2108 and four external disk trays). It's a backup target for Solaris 10, CentOS 5.5 and CentOS 6.2 servers that mount it's data volume via NFS. It has two 10gig NICs set up in a layer2+3 bond for one network, and two more 10gig NICs set up in the same way in another network. The host has a 99T XFS filesystem for the backups. RPCNFSDCOUNT is set to 256. During backups from clients the system exhibits odd hangs that interfere with some of our sensitive system's backup windows. On the NFS server side we see the following in dmesg. Originally I thought it was related to dirty writeback cache, but I adjusted dirty_writeback_centisecs and am still seeing the issue. dmesg during the problem window: Mar 16 07:01:21 *store01 kernel: __ratelimit: 11 callbacks suppressed Mar 16 07:01:21 *store01 kernel: nfsd: page allocation failure. snip Has anyone else seem similar issues? I can provide additional details about the server/configuration if anybody needs anything else. The issue only seems to occur under high write load as we've restored some of these backups and didn't seem to have an issue reading the data. The page allocation failure message made me wonder if your issue could be related to the issue I've run into here[1] on RHEL 6.2. My issue seems to be related to NFS mounting, but it's possible the root cause could be the same? A few other links: https://bugzilla.redhat.com/show_bug.cgi?id=593035 http://www.spinics.net/lists/linux-nfs/msg22248.html Red Hat has provided me with a test kernel which purportedly will resolve the issue. I haven't had a chance to test it out yet. Ray [1] https://bugzilla.redhat.com/show_bug.cgi?id=751992 ___ 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] NFS Hanging Under Heavy Load
Hope to get it installed this weekend. Ray On Fri, Mar 30, 2012 at 01:33:10PM -0700, Aaron Blew wrote: UPDATE I rolled a new kernel that's identical to the stock CentOS 2.6.32-220.el6 kernel with the exception of the new idmapper being enabled. Unfortunately there's been no improvement. Did you get a chance to try the RHEL kernel? -Aaron On Fri, Mar 16, 2012 at 7:01 PM, Ray Van Dolson ra...@bludgeon.org wrote: On Fri, Mar 16, 2012 at 01:33:54PM -0700, Aaron Blew wrote: Hello all, I'm currently experiencing an issue with an NFS server I've built (a Dell R710 with a Dell PERC H800/LSI 2108 and four external disk trays). It's a backup target for Solaris 10, CentOS 5.5 and CentOS 6.2 servers that mount it's data volume via NFS. It has two 10gig NICs set up in a layer2+3 bond for one network, and two more 10gig NICs set up in the same way in another network. The host has a 99T XFS filesystem for the backups. RPCNFSDCOUNT is set to 256. During backups from clients the system exhibits odd hangs that interfere with some of our sensitive system's backup windows. On the NFS server side we see the following in dmesg. Originally I thought it was related to dirty writeback cache, but I adjusted dirty_writeback_centisecs and am still seeing the issue. dmesg during the problem window: Mar 16 07:01:21 *store01 kernel: __ratelimit: 11 callbacks suppressed Mar 16 07:01:21 *store01 kernel: nfsd: page allocation failure. snip Has anyone else seem similar issues? I can provide additional details about the server/configuration if anybody needs anything else. The issue only seems to occur under high write load as we've restored some of these backups and didn't seem to have an issue reading the data. The page allocation failure message made me wonder if your issue could be related to the issue I've run into here[1] on RHEL 6.2. My issue seems to be related to NFS mounting, but it's possible the root cause could be the same? A few other links: https://bugzilla.redhat.com/show_bug.cgi?id=593035 http://www.spinics.net/lists/linux-nfs/msg22248.html Red Hat has provided me with a test kernel which purportedly will resolve the issue. I haven't had a chance to test it out yet. Ray [1] https://bugzilla.redhat.com/show_bug.cgi?id=751992 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Linux on touch screen device
On 03/30/2012 01:56 AM, Nataraj wrote: but my question is whether anyone really has linux running on any kind of tablet or tablet PC device in such a way that the touch screen can be used productively and it won't take a month to get it running? I've had a tablet PC for about 5 years now, the HP TC4400, and it mostly just worked out of the box with centos-5; it runs centos-6 fine, but is starting to get a bit old at a core2/2GB of ram. nothing special was needed, the screen interface comes up as a wacom device. and I've found it very useful. -- Karanbir Singh +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh ICQ: 2522219| Yahoo IM: z00dax | Gtalk: z00dax GnuPG Key : http://www.karan.org/publickey.asc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] transition to ip6
Am 30.03.2012 20:23, schrieb Bob Hoffman: I imagine some day in the near future there will be a switch to ipv6. Wrong. There will be no switch. IPv6 is just being added while IPv4 continues to function. Both will coexist for a long time yet. I cannot imagine ever remembering the ip address then...crazy. Don't worry. You will. Well, not the autoconfigured ones for sure, but those you choose yourself, they'll cling to your brain after some time just as 192.168 does today. My question, since i have never done ip6 stuff, is what does that mean on my webservers? Not much, really. You just give them IPv6 addresses and they'll work with them just like they do with the IPv4 addresses today. Would I just need to replace my ip4 with ip6 in my eths, bonds, bridges, and configuration files...and copy out my iptables to ip6tables, and change the dns servers? That would be a really bad transition plan. Don't switch - migrate. Don't replace IPv4 - add IPv6 alongside. IPv6 is designed to coexist with IPv4. anything especially daunting to make that switch (save from someone having to do that on 100 computers really fast!!) DNS reverse zones take some getting used to. Apart from that, it's really straightforward and doesn't differ that much from setting up an IPv4 address range: 1. Get a suitable IPv6 address range from your provider. The regular size for companies is /48, but a /56 is fine too. (If your provider is unable to give you one, get a better provider. If you have a really good reason for sticking with a provider that is so behind the times that it still cannot provide IPv6, you might use a tunnel broker, but that's a bit more complicated.) Also create an IPv6 reverse DNS zone for your address range on your DNS server and get it delegated from your provider so that you can manage reverse resolution yourself. (Otherwise you'll have to ask your provider to create every PTR RR you need for you.) 2. Configure your firewall to route and announce a /64 subnet of the IPv6 address range you got to each of your LANs. 3. Give your machines IPv6 addresses in addition to their IPv4 ones. (Many of them will have gotten one automatically already via autoconfiguration, but those aren't pretty or easy to remember, so you may want to assign another one instead or in addition.) Leave the IPv4 addresses in place so that existing connections will continue to work. 4. Add those addresses to the machines' DNS entries as records. Again, don't remove the IPv4 addresses (A records), they're still needed for communication partners who aren't IPv6 capable yet. Also add corresponding PTR records to the IPv6 reverse zone. That's it. At that point your machines will be reachable via IPv6 in addition to working with IPv4 as before. (Well, of course there'll be a lot of tedious details like logfile analyzers not understanding the IPv6 address format, access control lists needing additional entries for the new addresses, users phoning the help desk because addresses look strangely different, etc. But nothing fundamentally new or incomprehensible.) HTH Tilman ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
