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Patched KVM RPMs (solves 'network shutdown under heavy load')
by Timo Schoeler 24 Mar '10

24 Mar '10

Hi list, due to the necessity of having a patched KVM running, I build some new RPMs. However, only kmod-kvm-83-105.27.x86_64.rpm is important to replace the 'original' one as it's the only package that contains the patch. I didn't rename the packages, though, hopefully in order not to break the upgrade path provided to us. The patch adresses following problem: 'Fix a race condition where qemu finds that there are not enough virtio ring buffers available and the guest make more buffers available before qemu can enable notifications.' [0], the thread startet as 'network shutdown under heavy load' [1]. KVM already contains the fix (since February 19th, IIRC), CentOS' packages doesn't. The RPMs can be found here: http://www.riscworks.net/CentOS/KVM/fix-virt-io-ring-buffer-race/ Best, Timo [0] -- http://marc.info/?l=kvm&m=126564542625725&w=2 [1] -- http://www.mail-archive.com/kvm@vger.kernel.org/msg26033.html

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Publishing a webcam on a web page?
by Stephen Harris 24 Mar '10

24 Mar '10

This talk of cameras has reminded me of a problem I've not yet been able to solve. I have a Logitech Communicate STX ( ID 046d:08ad Logitech, Inc. QuickCam Communicate STX ) This seems to work under v4l on CentOS 5.4. If I load xawtv (from rpmforge) then I can view the image from the camera. But what I'd like to be able to do is have the image appear on a web page (maybe streaming video or maybe multi-part image using old-fashioned server-push web technology from 1995 :-)). Anyone have any recommended tools for this? Thanks! -- rgds Stephen

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Configure Webcam in centos 5.4
by Krishna Chandra Prajapati 23 Mar '10

23 Mar '10

Hi list, I looking for a solution about how to configure webcam in centos 5.4 What are the webcam packages available in centos. Any help is highly appreciated. Regards, Krishna

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kafi25@gmail.com
by kafi Mouhamed Radouane 23 Mar '10

23 Mar '10

kafi25(a)gmail.com

1 0

Connect to MySQL monitor on another host in the LAN ?
by Niki Kovacs 23 Mar '10

23 Mar '10

Hi, I'm running a medical application on a local network, using MySQL as a database. The application can also connect to remote hosts, so the idea is to install it on one machine acting as a "server", and then install it on the other machines on the LAN, but configure these to use the database on the "server". I guess before doing that, I'll better try and get comfortable with connecting remotely using the MySQL monitor itself, that is, without any application or some other frontend. Up until now, I've only configured MySQL in two situations. Either on standalone desktop workstations, or on a web server (LAMP). After installing MySQL (yum install mysql-server), the default setup has a few accounts without any password. First thing I usually do (correct me if this is wrong) is clean up these accounts and only keep one main root@localhost account. Something like this : [root@raymonde:~] # mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.0.77 Source distribution Type 'help;' or '\h' for help. Type '\c' to clear the buffer. mysql> use mysql; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> select user, host, password from user; +------+-----------+----------+ | user | host | password | +------+-----------+----------+ | root | localhost | | | root | raymonde | | | root | 127.0.0.1 | | | | localhost | | | | raymonde | | +------+-----------+----------+ 5 rows in set (0.00 sec) mysql> delete from user where user = ''; Query OK, 2 rows affected (0.01 sec) mysql> delete from user where host = 'raymonde'; Query OK, 1 row affected (0.00 sec) mysql> delete from user where host = '127.0.0.1'; Query OK, 1 row affected (0.01 sec) mysql> select user, host, password from user; +------+-----------+----------+ | user | host | password | +------+-----------+----------+ | root | localhost | | +------+-----------+----------+ 1 row in set (0.00 sec) mysql> set password for root@localhost = password('********'); Query OK, 0 rows affected (0.00 sec) mysql> select user, host, password from user; +------+-----------+------------------+ | user | host | password | +------+-----------+------------------+ | root | localhost | 2d97271980b60f82 | +------+-----------+------------------+ 1 row in set (0.00 sec) mysql> quit; So much for the standalone setup. Now what would be an orthodox (and somewhat secure) configuration to be able to connect to this MySQL server on 'raymonde' from another machine in the LAN ? Do I have to (re)create a root@raymonde MySQL account and eventually give it the same password than root@localhost ? Cheers, Niki

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fsck problems
by sync 23 Mar '10

23 Mar '10

hi , guys: when i reboot the server today ,the screen displays this ; --------------------------------------------------------------------------------------- Setting hostname xxx [OK] Your system appears to have shut down uncleanly Press Y within 1 seconds to force file system integrity check... Checking root filesystem /dev/VolGroup00/LogVol 00: UNEXPECTED INCONSISTENCY: RUN fsck MANUALLY. (i.e., without -a or -p options) [FAILED] *** An error occured during the file system check. *** Droping you to a shell; the system will reboot *** when you leave the shell. Give root password for maintenance (or type Control-D to continue) ---------------------------------------------------------------------------------------- is it the disk error ? What should i do to repair the disk ? Thanks in advance ......

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Ruby-1.9.1+ rpm for CentOS-5
by James B. Byrne 23 Mar '10

23 Mar '10

Does anyone have the url of a repository that provides Ruby-1.9.1+ for CentOS-5 and which they consider a trustworthy and reliable source? I really do not what to have to build this software if I can avoid it. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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Upgrading Python with Yum
by Susan Day 23 Mar '10

23 Mar '10

Hi; I have an old version of Python (2.4.3) and I'm trying to upgrade (to 2.6); however, when I try yum upgrade python it tells me that it's already got the latest and greatest...presumably of 2.4.3. I've tried yum list python and it only gives me the 2.4.3. Are there no others? Do I have to build from a tarball? I'm surprised I don't find a version of Python 3 either. In what folder are the rpms kept? TIA, Susan

5 8

gimp - aalib
by Frank Cox 23 Mar '10

23 Mar '10

I want to use the aalib plugin to save some graphics out of gimp. But... I can't find it as an option in Gimp. I have both gimp and aalib installed on this computer. Is there some additional piece that I also need to install? -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com

1 0

how to push the bounds and get newer packages for centos 5.4?
by Robert P. J. Day 22 Mar '10

22 Mar '10

i've just started looking after a (virtual) centos 5.4 server that's hosted at rackspace and, unsurprisingly, it was set up with all the standard defaults. part of the work i'll be doing involves php and, as i read it, the standard php version with centos 5.4 is php-5.1. if i *wanted* to move up to a more recent version (say, php-5.3), obviously, i'd need to go outside the limits of the standard centos yum repos. in my travels, i ran across this site: http://blog.famillecollet.com/pages/Config-en with the corresponding instructions: wget http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-3.noarch.r… wget http://rpms.famillecollet.com/enterprise/remi-release-5.rpm rpm -Uvh remi-release-5*.rpm epel-release-5*.rpm i'm suitably leery of 3rd-party repos but i recall that someone else (on this list?) recommended that site. and i can see that it has an x86_64 version of php-5.3 ready to go for centos 5.4: http://rpms.famillecollet.com/enterprise/5/remi/x86_64/repoview/php.html what are the recommendations for well-respected 3rd-party repos for centos 5.4 if i want to get newer packages? the centos 5.4 system in question is purely an internal development system so i have the freedom to customize it to some extent if newer packages are called for. thanks. rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Kernel Pedantry. Web page: http://crashcourse.ca Twitter: http://twitter.com/rpjday ========================================================================

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