[CentOS] CPU utils almost 100%
Dear All, I have been using the following for along time but recently i noticed the following Centos 5.2 squid stable 2.6 clamav + havp i do have MRTG running which monitors CPU + bandwith usage of my squid proxy server i notced recently that the cpu utilization peaks to abt 100 % at 4 am every day and becomes normall at 10 am cpu 4.5%us 2.3% sy 0.0%ni 2% id 95% wa notice the 95% wa the only thing that i added was i have a cron job running clamscan at 4 am but initally it was workin without any problem when i run top it show so when i noticed this high cpu utilization i removed the clamscan entry from my crontab file so as to diable it but the problem still persists i wanted to disble all the daily crontab jobs but i jus wanted to know which process could be actually causing this appreciate your advice and help regards fabian -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] modern motherboard for centos-5
Well, despite what you say about ASUS, I recently bought an M3N78-VM (http://www.ebuyer.com/product/152752 - although the net card specs are wrong) because it was cheap and it supported 8gb. The only problem was the lack for forcedeth drivers in standard CentOS, which I download from somewhere else. I can't speak for graphics or sound because the machine uses neither. It's running Xen kernel from the Gitco repositories and it's rock solid (touch wood). From: fred smith To: centos@centos.org Sent: Saturday, 4 July, 2009 15:39:26 Subject: [CentOS] modern motherboard for centos-5 I'm considering upgrading, and am trying to choose a modern motherboard that nevertheless fully works with Centos5/RHEL5. Though I'm partial to AMD processors, and would like to use one in my new configuration, that's not a requirement, if the most appropriate board happens to be intel-compatible. However, given the way ASUS is dumping LInux and crawling more firmly into bed with the Beast, I'd prefer to avoid ASUS boards. I see that NewEgg has some combo deals at reasonable prices, but I can't tell which chipsets/boards are known to work with centos5 and which aren't. Just at random, here's one of their offerings, a Biostar board: http://www.newegg.com/Product/Product.aspx?Item=N82E16813138143 I've always understood Biostar boards to be cheap, not only in price, but perhaps they're serviceable? I'm open to other suggestions, too. Thanks in advance! -- Fred Smith -- fre...@fcshome.stoneham.ma.us - The Lord detests the way of the wicked but he loves those who pursue righteousness. - Proverbs 15:9 (niv) - ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CPU utils almost 100%
2009/7/5 fabian > > i notced recently that the cpu utilization peaks to abt 100 % at 4 am > every day and becomes normall at 10 am > > > cpu 4.5%us 2.3% sy 0.0%ni 2% id 95% wa > > notice the 95% wa > > It looks like you might be misreading the idle % for CPU activity. A 95% idle shows the system is not doing much. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] modern motherboard for centos-5
fred smith wrote: > I'm considering upgrading, and am trying to choose a modern motherboard > that nevertheless fully works with Centos5/RHEL5. > > Though I'm partial to AMD processors, and would like to use one in my > new configuration, that's not a requirement, if the most appropriate > board happens to be intel-compatible. > Personally, for consumer grade motherboard, I prefer to use Gigabyte or MSI. Between those two, MSI is more USB boot friendly. I boot many implementations with USB SysLinux without problem with MSI, but problematic with Gigabyte. For AMD, I recommend to get any with AMD 780G chipset, the reasons are : a. already has built in low entry 3D capable graphic unit, and has DVI output in case you want to use them with large LCD screen b. the SATA chipset brought by the AMD SB700 or SB750 is compatible with VMWare ESX 4.0i, thus can be made as local VMFS storage. My CentOs is always above VMware ESX now. > However, given the way ASUS is dumping LInux and crawling more firmly > into bed with the Beast, I'd prefer to avoid ASUS boards. > Long time never used the Asus board anymore, thus cannot comment. > I see that NewEgg has some combo deals at reasonable prices, but I > can't tell which chipsets/boards are known to work with centos5 and > which aren't. > > Just at random, here's one of their offerings, a Biostar board: > http://www.newegg.com/Product/Product.aspx?Item=N82E16813138143 > I've always understood Biostar boards to be cheap, not only in price, > but perhaps they're serviceable? I have some cheap BioStar motherboards. Works well, and suitable for lower price desktop built for my friends. All of the running Ubuntu Linux. However none of them running 24x7 thus cannot recommend whether it is suitable for your email server requirements. The oldest possibly about 2 years old. If I recall, I never had any motherboard problem since 2001 and I only used Gigabyte-MSI-Biostar-Palit. Yes, there are some old motherboards who were dead after never been used, but usually they are > 4 years old and becoming rusty after I put them in the store room (very humid here in Singapore). ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dag's comment at linuxtag
Geoff Galitz wrote: > >> The aim was to create platform, not >> strictly focused on enterprise. We wanted create something mixed. >> Something with enterprise, testing, backport levels and efforts. The >> project has been started but never really haven't happened. >> > > I'll go on the record as being willing to volunteer to help with a > distribution/version neutral repo. Such a thing would benefit my business. > Is anyone currently leading this project? > > > - > Geoff Galitz > Blankenheim NRW, Germany > http://www.galitz.org/ > http://german-way.com/blog/ > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > rpmforge..:) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CPU utils almost 100%
> 2009/7/5 fabian > >> >> i notced recently that the cpu utilization peaks to abt 100 % at 4 am >> every day and becomes normall at 10 am >> >> >> cpu 4.5%us 2.3% sy 0.0%ni 2% id 95% wa >> >> notice the 95% wa >> >> > It looks like you might be misreading the idle % for CPU activity. A 95% > idle shows the system is not doing much. > so sorry abouyt my typing its cpu==>4.5%us sy==> 2.3% ni==> 0.0% id==> 2 % wa==> 95% so the wa=95 % this starts about 4 am and stops about 10 am then the CPU idle time is always between 90% to 99% regards Fabian > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CPU utils almost 100%
On Sun, 2009-07-05 at 17:32 +0300, fabian wrote: > > 2009/7/5 fabian > > > >> > >> i notced recently that the cpu utilization peaks to abt 100 % at 4 am > >> every day and becomes normall at 10 am > >> > >> > >> cpu 4.5%us 2.3% sy 0.0%ni 2% id 95% wa > >> > >> notice the 95% wa > >> > >> > > It looks like you might be misreading the idle % for CPU activity. A 95% > > idle shows the system is not doing much. > > > > so sorry abouyt my typing > > its cpu==>4.5%us > sy==> 2.3% > ni==> 0.0% > id==> 2 % > wa==> 95% > > > so the wa=95 % > > this starts about 4 am and stops about 10 am > then the CPU idle time is always between 90% to 99% Your in Time Wait there! Look at your disk i/o and processor ques for clam av and havp along with squid. Clam AV in sync with havp and squid with lots of connections can bring a server to its knees real quick. You can start by looking at your config for clamd that controls the squid scanning and logging. If no problems there then look elsewhere. look at your running processes. John ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] software raid1 syncing
- Original Message > From: "luc...@lastdot.org" > To: CentOS mailing list > Sent: Friday, July 3, 2009 3:45:44 PM > Subject: Re: [CentOS] software raid1 syncing > > On Fri, Jul 3, 2009 at 9:15 PM, Steven Vishootwrote: > > > > hello all, > > > > I have a setup that is raid 1 and put the mirrored drive back in and now it > > is > still showing as degraded saying: raid1: raid set md6 active with 1 out of 2 > mirrors with this message on all the raids.i know i am wrong by saying this > but > i thought putting in the driving and rebooting would start the re syncing > itself. what do i have to do to add this back in, i am so confused with this > process. > > > > centos 4.x > > > > ___ > > CentOS mailing list > > CentOS@centos.org > > http://lists.centos.org/mailman/listinfo/centos > > > > Well, just putting a new disk drive in the place of the bad one > doesn't cut it. You have to recreate partition table and then add the > partitions to the drive. > e.g. > sda = the old disk in the raid that has not failed > sdb = the newly added disk > dd if=/dev/sda of=/dev/sdb bs=512 count=1 > > That'll replicate the partition table and mbr to the new disk. > > Then starting addinf the new partitions to the linux raid: > mdadm -a /dev/sdb1 /dev/md0 and so on, depending what your setup is. > Do a: > cat /proc/mdstat and see what partitions are added to which raid. > Alternatively to a google search for howtos (e.g. > http://www.gagme.com/greg/linux/raid-lvm.php ) and learn how to manage > linux raid so you dont fsck up your system. > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos Thank you Les & Lucian, I was able to fix the problem with your help, the first problem was an error between the chair and keyboard. I had forgot to turn the hard drive back on in the bios when i was trying to do some other stuff a while ago, so that caused me some grief and soon as i turned that on i was able to see the drive without having to do the "dd" command. ( i was trying to replace the mirrored drives and knock out the raid but i was not able to get the other drive up and running because i was having so much trouble with samba not working correctly). The second did help me and i was able to sync it up with no problems. again thanks steven ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CPU utils almost 100%
fabian wrote: >> 2009/7/5 fabian >> >>> i notced recently that the cpu utilization peaks to abt 100 % at 4 am >>> every day and becomes normall at 10 am >>> >>> >>> cpu 4.5%us 2.3% sy 0.0%ni 2% id 95% wa >>> >>> notice the 95% wa >>> >>> >> It looks like you might be misreading the idle % for CPU activity. A 95% >> idle shows the system is not doing much. >> > > so sorry abouyt my typing > > its cpu==>4.5%us > sy==> 2.3% > ni==> 0.0% > id==> 2 % > wa==> 95% > > > so the wa=95 % > > this starts about 4 am and stops about 10 am > then the CPU idle time is always between 90% to 99% Wait means the kernel is waiting for some device i/o command(s) to complete. The CPU is idle but can't do anything useful without the results from the device, probably disk or network. Starting at 4 am makes the 'updatedb'run that builds the database for the locate command a likely culprit. Do you have a lot of files, slow disks, or perhaps some network mounts that are included? -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] GUI Front End for OpenLDAP admin (users & groups)
Does there exist a GUI Front End for OpenLDAP admin for CentOS 5 (RHEL 5)? The binary (i386) rpm for directory_adminstrator works just fine with CentOS 4, but does't install under CentOS 5 and the src RPM does not build (I hacked the spec file and did install the build deps, but it is using an old hack for finding libgnome (/usr/lib/gnomeConf.sh or something like that). I installed centos-ds, but this *looks* like it is a replacement OpenLDAP's slapd, which I don't want -- I have things set up and working with slapd and don't want to migrate things again. -- Robert Heller -- 978-544-6933 Deepwoods Software-- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows hel...@deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] GUI Front End for OpenLDAP admin (users & groups)
Robert Heller wrote: > Does there exist a GUI Front End for OpenLDAP admin for CentOS 5 (RHEL > 5)? Not an rpm (but works with the supplied openjdk): Apache Directory Studio. I don't know a better LDAP frontend than that. Ralph pgpGlUQVuz2zT.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] GUI Front End for OpenLDAP admin (users & groups)
> Does there exist a GUI Front End for OpenLDAP admin for CentOS 5 (RHEL > 5)? > From a Windows client you can see and manage your LDAP directory with the free LDAP Admin: http://ldapadmin.sourceforge.net/ Under Linux, Luma http://luma.sourceforge.net/ You can also manage your directory with a browser using the following (among others): phpLDAPadmin http://phpldapadmin.sourceforge.net/wiki/index.php/Main_Page LDAP Account Manager http://lam.sourceforge.net/ Webmin (general system administration, including LDAP) http://www.webmin.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] GUI Front End for OpenLDAP admin (users & groups)
At Sun, 05 Jul 2009 22:26:08 +0100 CentOS mailing list wrote: > > > > > Does there exist a GUI Front End for OpenLDAP admin for CentOS 5 (RHEL > > 5)? > > > > From a Windows client you can see and manage your LDAP directory with > the free > LDAP Admin: > > http://ldapadmin.sourceforge.net/ We don't have any MS-Windows clients. The GUI must be Linux-based (this includes a web-based system accessed via a standard web browser). > > Under Linux, Luma > http://luma.sourceforge.net/ > > You can also manage your directory with a browser using the following > (among others): > > phpLDAPadmin > http://phpldapadmin.sourceforge.net/wiki/index.php/Main_Page > > LDAP Account Manager > http://lam.sourceforge.net/ > > Webmin (general system administration, including LDAP) > http://www.webmin.com > > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > > -- Robert Heller -- 978-544-6933 Deepwoods Software-- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows hel...@deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] GUI Front End for OpenLDAP admin (users & groups)
> We don't have any MS-Windows clients. The GUI must be Linux-based (this > includes a web-based system accessed via a standard web browser). > > >> Under Linux, Luma >> http://luma.sourceforge.net/ >> >> You can also manage your directory with a browser using the following >> (among others): >> >> phpLDAPadmin >> http://phpldapadmin.sourceforge.net/wiki/index.php/Main_Page >> >> LDAP Account Manager >> http://lam.sourceforge.net/ >> >> Webmin (general system administration, including LDAP) >> http://www.webmin.com >> >> The answer is already in my post. I use all of them, according to circumstance and specific need. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] modern motherboard for centos-5
On Sun, Jul 05, 2009 at 05:05:30AM -0700, Ian Murray wrote: > Well, despite what you say about ASUS, I recently bought an M3N78-VM > (http://www.ebuyer.com/product/152752 - although the net card specs are > wrong) because it was cheap and it supported 8gb. The only problem was the > lack for forcedeth drivers in standard CentOS, which I download from > somewhere else. I can't speak for graphics or sound because the machine uses > neither. > > It's running Xen kernel from the Gitco repositories and it's rock solid > (touch wood). > Pardon my ignorance, but what's "forcedeth"? > > From: fred smith > To: centos@centos.org > Sent: Saturday, 4 July, 2009 15:39:26 > Subject: [CentOS] modern motherboard for centos-5 > > I'm considering upgrading, and am trying to choose a modern motherboard > that nevertheless fully works with Centos5/RHEL5. > > Though I'm partial to AMD processors, and would like to use one in my > new configuration, that's not a requirement, if the most appropriate > board happens to be intel-compatible. > > However, given the way ASUS is dumping LInux and crawling more firmly > into bed with the Beast, I'd prefer to avoid ASUS boards. > > I see that NewEgg has some combo deals at reasonable prices, but I > can't tell which chipsets/boards are known to work with centos5 and > which aren't. > > Just at random, here's one of their offerings, a Biostar board: > http://www.newegg.com/Product/Product.aspx?Item=N82E16813138143 > I've always understood Biostar boards to be cheap, not only in price, > but perhaps they're serviceable? > > I'm open to other suggestions, too. > > Thanks in advance! > > -- > Fred Smith -- fre...@fcshome.stoneham.ma.us - > The Lord detests the way of the wicked > but he loves those who pursue righteousness. > - Proverbs 15:9 (niv) > - -- Fred Smith -- fre...@fcshome.stoneham.ma.us - But God demonstrates his own love for us in this: While we were still sinners, Christ died for us. --- Romans 5:8 (niv) -- pgpppN0JbVNva.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] modern motherboard for centos-5
At Sun, 5 Jul 2009 21:35:31 -0400 CentOS mailing list wrote: > > > > On Sun, Jul 05, 2009 at 05:05:30AM -0700, Ian Murray wrote: > > Well, despite what you say about ASUS, I recently bought an M3N78-VM > > (http://www.ebuyer.com/product/152752 - although the net card specs are > > wrong) because it was cheap and it supported 8gb. The only problem was the > > lack for forcedeth drivers in standard CentOS, which I download from > > somewhere else. I can't speak for graphics or sound because the machine > > uses neither. > > > > It's running Xen kernel from the Gitco repositories and it's rock solid > > (touch wood). > > > > Pardon my ignorance, but what's "forcedeth"? On board Ethernet, part of the nVidia GForce chipset. > > > > > From: fred smith > > To: centos@centos.org > > Sent: Saturday, 4 July, 2009 15:39:26 > > Subject: [CentOS] modern motherboard for centos-5 > > > > I'm considering upgrading, and am trying to choose a modern motherboard > > that nevertheless fully works with Centos5/RHEL5. > > > > Though I'm partial to AMD processors, and would like to use one in my > > new configuration, that's not a requirement, if the most appropriate > > board happens to be intel-compatible. > > > > However, given the way ASUS is dumping LInux and crawling more firmly > > into bed with the Beast, I'd prefer to avoid ASUS boards. > > > > I see that NewEgg has some combo deals at reasonable prices, but I > > can't tell which chipsets/boards are known to work with centos5 and > > which aren't. > > > > Just at random, here's one of their offerings, a Biostar board: > > http://www.newegg.com/Product/Product.aspx?Item=N82E16813138143 > > I've always understood Biostar boards to be cheap, not only in price, > > but perhaps they're serviceable? > > > > I'm open to other suggestions, too. > > > > Thanks in advance! > > > > -- > > Fred Smith -- fre...@fcshome.stoneham.ma.us > > - > > The Lord detests the way of the wicked > > but he loves those who pursue righteousness. > > - Proverbs 15:9 (niv) > > - > -- Robert Heller -- 978-544-6933 Deepwoods Software-- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows hel...@deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] modern motherboard for centos-5
On Sun, Jul 05, 2009 at 09:03:59PM +0800, The Eye In The Sky wrote: > fred smith wrote: > > I'm considering upgrading, and am trying to choose a modern motherboard > > that nevertheless fully works with Centos5/RHEL5. > > > > Though I'm partial to AMD processors, and would like to use one in my > > new configuration, that's not a requirement, if the most appropriate > > board happens to be intel-compatible. > > > > Personally, for consumer grade motherboard, I prefer to use Gigabyte or > MSI. > Between those two, MSI is more USB boot friendly. I boot many > implementations with USB SysLinux without problem with MSI, but > problematic with Gigabyte. > > For AMD, I recommend to get any with AMD 780G chipset, the reasons are : > a. already has built in low entry 3D capable graphic unit, and has DVI > output in case you want to use them with large LCD screen > b. the SATA chipset brought by the AMD SB700 or SB750 is compatible with > VMWare ESX 4.0i, thus can be made as local VMFS storage. My CentOs is > always above VMware ESX now. > > However, given the way ASUS is dumping LInux and crawling more firmly > > into bed with the Beast, I'd prefer to avoid ASUS boards. > > > Long time never used the Asus board anymore, thus cannot comment. Thanks for your thoughts. My current system is a Gigabyte and I've been quite happy with it. Looking around at Newegg, I see this board: http://www.newegg.com/Product/Product.aspx?Item=N82E16813128392 that while inexpensive appears to be full-featured, at least for anything I'd do with it. But I can't find anything online relating to Linux compatibility. It uses AMD chips for north- and south-bridges, AMD770 and AMD SB710. I suppose I could just buy it and find out, but that could get expensive, what with re-stocking fees, and all. Phoronix tends to review higher-end boards than this, mostly, and they also consider it to be "linux compatible" if it works with the latest/greatest as-yet-unreleased Ubuntu. But I like to stick with Centos beecause I hate getting caught up in the "update every six-to-twelve months" whether I like it or not treadmill. I like to build a system and have it run for 2 or 3 years before I need to do a major OS upgrade, and Fedora and Ubuntu do not lend themselves well to that way of living. > > > I see that NewEgg has some combo deals at reasonable prices, but I > > can't tell which chipsets/boards are known to work with centos5 and > > which aren't. > > > > Just at random, here's one of their offerings, a Biostar board: > > http://www.newegg.com/Product/Product.aspx?Item=N82E16813138143 > > I've always understood Biostar boards to be cheap, not only in price, > > but perhaps they're serviceable? > I have some cheap BioStar motherboards. Works well, and suitable for > lower price desktop built for my friends. All of the running Ubuntu > Linux. However none of them running 24x7 thus cannot recommend whether > it is suitable for your email server requirements. The oldest possibly > about 2 years old. If I recall, I never had any motherboard problem > since 2001 and I only used Gigabyte-MSI-Biostar-Palit. Yes, there are > some old motherboards who were dead after never been used, but usually > they are > 4 years old and becoming rusty after I put them in the store > room (very humid here in Singapore). -- Fred Smith -- fre...@fcshome.stoneham.ma.us Do you not know? Have you not heard? The LORD is the everlasting God, the Creator of the ends of the earth. He will not grow tired or weary, and his understanding no one can fathom. - Isaiah 40:28 (niv) - pgpjXJdWRSyr1.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Building Custom Kernel - CentOS 4.4
Hi Ned, Got i working. Upgraded cpp package to 3.4.10 and it got working. Successfully compiled a custom kernel. I am wondering why I wasn able to do this with the cpp package bundled with CentOS 4.4? Regards, Kurian Thayil. On Mon, 2009-06-29 at 11:35 +0100, Ned Slider wrote: > Kurian Thayil wrote: > > Hi Ned, > > > > The package cpp was already installed. > > > > [r...@astind02 customKernelcompile]# rpm -qa |grep cpp > > cpp-3.4.6-3 > > [r...@astind02 customKernelcompile]# rpm -qa |grep gcc > > gcc-c++-3.4.6-3 > > libgcc-3.4.6-3 > > gcc-3.4.6-3 > > > > Any hint on this?? > > > > hmm, not sure. Perhaps you could try following the very detailed HowTo > on the wiki: > > http://wiki.centos.org/HowTos/Custom_Kernel > > I know the authors of that page do an excellent job of maintaining it to > make sure the information is valid and up to date. > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos -- Kurian Mathew Thayil. (GPG KeyID: E232394F) signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos