Re: [CentOS-docs] Images for CentOS Documentation
Am 10.03.2011 00:16, schrieb Ralph Angenendt: Am 09.03.11 10:45, schrieb Andreas Rogge: The SVG has text inside. Can you convert the text into pathes so it doesn't break when viewed without the Denmark font installed? Sure. It's on people.centos.org now. Great! Thanks. I just spent a few hours on figuring out how RH made the svg-logo work correctly with their HTML because my in my adaption there are scrollbars. Eventually it turned out to be broken on docs.r.c, too :) -- Solvention Ltd. Co. KG Egermannstr. 6-8 53359 Rheinbach Tel: +49 2226 158179-0 Fax: +49 2226 158179-9 http://www.solvention.de mailto:i...@solvention.de ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-es] Infineon AN983B
Hola! Yo iría a la web del fabricante a ver sí hay drivers El 10/03/2011 20:09, Azu Carlitox elazucarli...@gmail.com escribió: Buenas, tengo un CentOS 5.4 instalado en un pc, y quiero agregarle una tarjeta de red Infineon AN983B, el tema es que no me la detecta ni se como configurarlo para que me funcione. Alguno tiene idea de como puedo hacerlo? gracias ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es
Re: [CentOS] Cannot %include in CentOS 5.5 kickstart
On 03/10/2011 08:14 AM, whitivery wrote: # This does not work %include /tmp/drvdisk # This works #driverdisk --source=nfs:10.0.4.157:/srv/cobbler/RHEL5.5_x86_402_409_410_DD.img %packages @base @core %pre --erroronfail echo driverdisk --source=nfs:10.0.4.157:/srv/cobbler/RHEL5.5_x86_402_409_410_DD.img /tmp/drvdisk Although lacking a good caffeine fix the only difference I notice with some examples is that they do this: %include /tmp/drvdisk.sh . . . %pre echo driverdisk --source=nfs:10.1.2.3:/foo/image.img /tmp/drvdisk.sh Notice the usage of .sh in the drvdisk.sh filename? Regards, Patrick ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
Am 03/11/2011 03:03 AM, schrieb Nico Kadel-Garcia: On Thu, Mar 10, 2011 at 6:49 PM, B.J. McClurekeepert...@bellsouth.net wrote: B.J. McClure keepert...@bellsouth.net Sent from MacBook-Air On Mar 10, 2011, at 5:28 PM, Nico Kadel-Garcia wrote: On Thu, Mar 10, 2011 at 11:13 AM, Michael Eagerea...@eagerm.com wrote: Previous cleaning have been with canned compressed air. Thanks for the caution about vacuums and static. I may use the vacuum on the case fans from the outside. The case should provide an adequate static shield. I've had good results with a damp, soft cloth or Q-tip with distilled water for awkward bits. and filters, and that cloth for the case itself. It also looks noticeably newer, which helps with walking investors through a small machine room. I must respectfully disagree with any application of water, distilled or otherwise to things electronic. I was taught in the Navy, and my engineering career has confirmed, that cleaning of electronic components should be done with low pressure, dried, compressed air. 50 psi max. If some solvent must be used, try alcohol. Evaporates quickly, leaves no residue and has an affinity for water. Typical drug-store alcohol is rubbing alcohol, and is 30% water. I designed medical electronics for a dozen years. Acohol has its uses, but water is much cheaper, safer, and you don't have fumes to deal with. Shall we discuss the effectives of surface etch resist and cladding in protecting circuit boards from damage, and the effects of alcohol on low cost electronic sockets? I agree with Nico, I have been working for a large PC-Manufacturer in Europe for many years and alcohol was never a good idea for cleaning pcbs, not in production nor in the field. Either we used trichloroethane or trichlorotrifluoroethane for washing and cleaning of mainboards (which became a bit unpopular due to its effects on the ozone layer...) or we used water-based cleaning fluids (aka 'water'). But that was only in the production process of the pcbs. Almost never in the field, except when real repairs on the mainboard had to be done on site (soldering). Yes, it can be true with 'navy-strength' electronics that you actually can use alcohol for the purpose of cleaning electronic boards, but in low-cost electronics, it's a total no-go, because it disolves the coating of the pcbs and most often harms - as Nico wrote - the sockets and chip packages. We're talking about low-cost electronics here... Though, when cleaning machines in the field, I very rarely ever used something else then compressed air. Actually, I would suggest to everyone not to clean the inside of a box with any kind of fluid, since it actually won't do anything positive besides changing the looks. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] debugging auto mount configuration
Hello there, I successfully use automount to mount a large XFS pargtition on one CentOS 5.5 machine. I then tried to do the same thing on a different machine - and it simply would not work! The configuration is done in the same fashion, I checked and double-checked the syntax - but it is still a no go. When I use the mount command the partition mounts perfectly. I have tried running automount --debug and automount --verbose and thus far have not seen any messages that would shed any light on what's going on. So I am a bit lost at the moment. Any advice on how to proceed would be much appreciated. Boris. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] screen saver unlock dialog window is not visible in clone mode
Hi, Environment: I am using CentOS 5.3 operating system. I upgraded xorg of centos to 7.3. I am using intel 945 GM board. My xorg server version is 1.4.2 and inetl driver version 2.4.3. gnome-screensaver version is 2.16.1-8.el5. Problem: I connected another system of same hardware using VGA output. Now I can see clone of my system on secondary display. I enabled screensaver with 1 minute period and also enabled locking feature using gnome-screensaver-preferences. After 1 minute screensaver appeared on both primary and secondary displays. But when I move mouse or press any key, Screen saver unlock dialog is not appearing. But when I type password, I am able to comeout of screensaver. So Screensver unlock dialog is there but it is not visible. When I remove secondary display, I mean when I am in single display mode screen saver unlock dialog is visible and working fine. So what could be the problem that causing screensaver unlock dialog window to appear/visible in clone/extended monitor mode. Please help. Thanks ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
Am 03/11/2011 03:03 AM, schrieb Nico Kadel-Garcia: On Thu, Mar 10, 2011 at 6:49 PM, B.J. McClurekeepert...@bellsouth.net wrote: B.J. McClure keepert...@bellsouth.net Sent from MacBook-Air On Mar 10, 2011, at 5:28 PM, Nico Kadel-Garcia wrote: On Thu, Mar 10, 2011 at 11:13 AM, Michael Eagerea...@eagerm.com wrote: Previous cleaning have been with canned compressed air. Thanks for the caution about vacuums and static. I may use the vacuum on the case fans from the outside. The case should provide an adequate static shield. I've had good results with a damp, soft cloth or Q-tip with distilled water for awkward bits. and filters, and that cloth for the case itself. It also looks noticeably newer, which helps with walking investors through a small machine room. I must respectfully disagree with any application of water, distilled or otherwise to things electronic. I was taught in the Navy, and my engineering career has confirmed, that cleaning of electronic components should be done with low pressure, dried, compressed air. 50 psi max. If some solvent must be used, try alcohol. Evaporates quickly, leaves no residue and has an affinity for water. Typical drug-store alcohol is rubbing alcohol, and is 30% water. I designed medical electronics for a dozen years. Acohol has its uses, but water is much cheaper, safer, and you don't have fumes to deal with. Shall we discuss the effectives of surface etch resist and cladding in protecting circuit boards from damage, and the effects of alcohol on low cost electronic sockets? I agree with Nico, I have been working for a large PC-Manufacturer in Europe for many years and alcohol was never a good idea for cleaning pcbs, not in production nor in the field. Either we used trichloroethane or trichlorotrifluoroethane for washing and cleaning of mainboards (which became a bit unpopular due to its effects on the ozone layer...) or we used water-based cleaning fluids (aka 'water'). But that was only in the production process of the pcbs. Almost never in the field, except when real repairs on the mainboard had to be done on site (soldering). Yes, it can be true with 'navy-strength' electronics that you actually can use alcohol for the purpose of cleaning electronic boards, but in low-cost electronics, it's a total no-go, because it disolves the coating of the pcbs and most often harms - as Nico wrote - the sockets and chip packages. We're talking about low-cost electronics here... Though, when cleaning machines in the field, I very rarely ever used something else then compressed air. Actually, I would suggest to everyone not to clean the inside of a box with any kind of fluid, since it actually won't do anything positive besides changing the looks. After decades in the high precision and electronics industry, I can tell you for sure that compressed air is not seen as a good choice. It blows the dust where it doesn't belong. That may not be a big problem with a cheap PC, but it's not professional at all. If you want to do it the professional way, go to an ESD protected room, take an ESD vac and an ESD brush, wear your ESD shoes and wrist strap, and clean *carefully*. Compressed air may additionally be used in certain places, but not more. Simon ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installation failure
Glad you got it working. Most of the power supply checkers aren't worth it. I checked 3 power supplies with a checker and all 3 didnt work on the pc i was working on. It was the power supplies, i took one out of a running pc and the one being worked on powered up. So it is just easier just to swap the power supply out to start with. Chris - Original Message - From:Mark mhullr...@gmail.com To:CentOS mailing list centos@centos.org Cc: Sent:Thursday, March 10, 2011 11:59 PM Subject:Re: [CentOS] Installation failure On Thu, Mar 10, 2011 at 9:01 PM, Chris Weisiger cweisi...@bellsouth.net wrote: Try checking the power supply, swap in another one from a different pc. Yeah, I figured that out about half an hour ago and got it going. Shoulda thought of that up front. Interestingly, I have a power supply tester I bought at CompUSA before they left SoCal, and it said that power supply was fine. Ha ha ha. I think I need a new one, one that actually works Thanks, everyone. ___ 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] IPC Benchmark in Centos
Hi, I'm interested is there any benchmark tests for Centos. How fast is for example Unix domain socket and Message Queue? Regards Peter ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] UDP Perfomance tuning
Hi, We are running on 5.5 on a HP ProLiant DL360 G6. Kernel version is 2.6.18-194.17.1.el5 (we had also tested with the latest available kernel kernel-2.6.18-238.1.1.el5.x86_64) We running some performance tests using the iperf utility. We are seeing very bad and inconsistent performance on the UDP testing. The maximum we could get, was 440 Mbits/sec, and it varies from 250 to 440 Mbits/sec. We are connected on a 1000Mb/s link, we also tested the same using a cross-over connections between the two machines, but the same performance. We also see a lot of dropped UDP packets. Udp: 551522838 packets received 1902 packets to unknown port received. 109709802 packet receive errors 7239 packets sent We had checked all the kernel configurations and set them as recommended. This is the settings and tests we have done Server: net.core.rmem_default = 2097152 net.core.wmem_default = 2097152 net.core.rmem_max = 8388608 net.core.wmem_max = 8388608 strace -fttt -o /tmp/server.trace iperf -s -u -p -w 6m -i 5 -l 1k Client: net.core.rmem_default = 2097152 net.core.wmem_default = 2097152 net.core.rmem_max = 8388608 net.core.wmem_max = 8388608 strace -fttt -o /tmp/client.trace iperf -p -u -w 6m -i 5 -t 60 -c 192.168.1.2 -b 990M -l 1k Can someone please help me with this, since I am running in circles and can't get the required UDP performance? -- Prasad Pillarisetti If everything is coming your way, then you are in the wrong lane ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
On Fri, Mar 11, 2011 at 8:51 AM, Simon Matter simon.mat...@invoca.ch wrote: After decades in the high precision and electronics industry, I can tell you for sure that compressed air is not seen as a good choice. It blows the dust where it doesn't belong. That may not be a big problem with a cheap PC, but it's not professional at all. If you want to do it the professional way, go to an ESD protected room, take an ESD vac and an ESD brush, wear your ESD shoes and wrist strap, and clean *carefully*. Compressed air may additionally be used in certain places, but not more. Simon Is it worth a discussion here of overall PC manufacturing safety tips? It's not really CentOS specific, but it is interesting. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installation failure
On Fri, Mar 11, 2011 at 9:18 AM, Chris Weisiger cweisi...@bellsouth.net wrote: Glad you got it working. Most of the power supply checkers aren't worth it. I checked 3 power supplies with a checker and all 3 didnt work on the pc i was working on. It was the power supplies, i took one out of a running pc and the one being worked on powered up. So it is just easier just to swap the power supply out to start with. Chris This is one of the reasons I *love* dual power-supply, server grade hardware. It's pricier and noisier, but just being able to move one plug, then the other to swap surge suppressors and UPS's and even re-arrange power strips or re-arrange cluttered cabling is well worth it. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] question on modules loaded
lsmod shows dm_raid45 66509 0 dm_message 6977 1 dm_raid45 dm_region_hash 15681 1 dm_raid45 dm_log 14529 3 dm_mirror,dm_raid45,dm_region_hash dm_mod 62201 4 dm_mirror,dm_multipath,dm_raid45,dm_log dm_mem_cache9537 1 dm_raid45 I am wondering why these raid modules are loaded as I am not running raid on this particular machine and looking for ways to free up memory. THanks, jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Server locking up everyday around 3:30 AM - (INFO: task wget:13608 blocked for more than 120 seconds) need sleep, help.
This may or may not be CentOS related, but am out of ideas at this point and wanted to bounce this off the list. I'm running a CentOS 5.5 server, running the latest kernel 2.6.18-194.32.1.el5. Almost everyday around 3:30 AM the server completely locks up and has to be power cycled before it will come back online. (this means someone hat to wake up and reboot the server, oh how I love being an internet janitor! :) Smells like a hardware issue to me too, but I went through all of the dell diagnostics, updated the firmware, everything checks out as being okay, RAID, disks, RAM, etc... Spent an hour on the phone with a Dell tech. No hardware issues, at least that we were able to find. There are no cron jobs that run at 3:30, no backups, the server has a load of 0, nothing is scheduled around that time... The only crontab entry at all is */5 * * * * wget -q www.websitedomain.com/cron.php /dev/null 21 They are running Magento for commerce purposes and this runs every 5 minutes. Why does the server only lockup around 3:30 AM? Because it's knows I am fast asleep? I was able to pull this from /var/log/messages, this happens just seconds before locking up completely... Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than 120 seconds. Mar 8 03:33:19 web1 kernel: echo 0 /proc/sys/kernel/hung_task_timeout_secs disables this message. Mar 8 03:33:19 web1 kernel: wget D 810001004420 0 13608 13607 (NOTLB) Mar 8 03:33:19 web1 kernel: 81007bc7bc78 0086 81007bc7bd88 81000100d3f8 Mar 8 03:33:19 web1 kernel: 81007bc7bbf0 0007 8100849db0c0 80308b60 Mar 8 03:33:19 web1 kernel: 00013a2964cdf439 3237 8100849db2a8 64c82eae Mar 8 03:33:19 web1 kernel: Call Trace: Mar 8 03:33:20 web1 kernel: [80063c6f] __mutex_lock_slowpath+0x60/0x9b Mar 8 03:33:20 web1 kernel: [80063cb9] .text.lock.mutex+0xf/0x14 Mar 8 03:33:20 web1 kernel: [8000cf82] do_lookup+0x90/0x1e6 Mar 8 03:33:20 web1 kernel: [8000a29c] __link_path_walk+0xa01/0xf5b Mar 8 03:33:20 web1 kernel: [8000ea4b] link_path_walk+0x42/0xb2 Mar 8 03:33:20 web1 kernel: [8000cd72] do_path_lookup+0x275/0x2f1 Mar 8 03:33:23 web1 kernel: [80012851] getname+0x15b/0x1c2 Mar 8 03:33:23 web1 kernel: [800239d1] __user_walk_fd+0x37/0x4c Mar 8 03:33:23 web1 kernel: [80028905] vfs_stat_fd+0x1b/0x4a Mar 8 03:33:23 web1 kernel: [80023703] sys_newstat+0x19/0x31 Mar 8 03:33:23 web1 kernel: [8005d116] system_call+0x7e/0x83 If anyone has some advice on where to go from here it would be greatly appreciated. Thanks in advance. -- PJF ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM - (INFO: task wget:13608 blocked for more than 120 seconds) need sleep, help.
On Fri, Mar 11, 2011 at 12:33 PM, PJ pauljer...@gmail.com wrote: This may or may not be CentOS related, but am out of ideas at this point and wanted to bounce this off the list. I'm running a CentOS 5.5 server, running the latest kernel 2.6.18-194.32.1.el5. Almost everyday around 3:30 AM the server completely locks up and has to be power cycled before it will come back online. (this means someone hat to wake up and reboot the server, oh how I love being an internet janitor! :) Smells like a hardware issue to me too, but I went through all of the dell diagnostics, updated the firmware, everything checks out as being okay, RAID, disks, RAM, etc... Spent an hour on the phone with a Dell tech. No hardware issues, at least that we were able to find. There are no cron jobs that run at 3:30, no backups, the server has a load of 0, nothing is scheduled around that time... The only crontab entry at all is */5 * * * * wget -q www.websitedomain.com/cron.php /dev/null 21 They are running Magento for commerce purposes and this runs every 5 minutes. Why does the server only lockup around 3:30 AM? Because it's knows I am fast asleep? I was able to pull this from /var/log/messages, this happens just seconds before locking up completely... Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than 120 seconds. Mar 8 03:33:19 web1 kernel: echo 0 /proc/sys/kernel/hung_task_timeout_secs disables this message. Mar 8 03:33:19 web1 kernel: wget D 810001004420 0 13608 13607 (NOTLB) Mar 8 03:33:19 web1 kernel: 81007bc7bc78 0086 81007bc7bd88 81000100d3f8 Mar 8 03:33:19 web1 kernel: 81007bc7bbf0 0007 8100849db0c0 80308b60 Mar 8 03:33:19 web1 kernel: 00013a2964cdf439 3237 8100849db2a8 64c82eae Mar 8 03:33:19 web1 kernel: Call Trace: Mar 8 03:33:20 web1 kernel: [80063c6f] __mutex_lock_slowpath+0x60/0x9b Mar 8 03:33:20 web1 kernel: [80063cb9] .text.lock.mutex+0xf/0x14 Mar 8 03:33:20 web1 kernel: [8000cf82] do_lookup+0x90/0x1e6 Mar 8 03:33:20 web1 kernel: [8000a29c] __link_path_walk+0xa01/0xf5b Mar 8 03:33:20 web1 kernel: [8000ea4b] link_path_walk+0x42/0xb2 Mar 8 03:33:20 web1 kernel: [8000cd72] do_path_lookup+0x275/0x2f1 Mar 8 03:33:23 web1 kernel: [80012851] getname+0x15b/0x1c2 Mar 8 03:33:23 web1 kernel: [800239d1] __user_walk_fd+0x37/0x4c Mar 8 03:33:23 web1 kernel: [80028905] vfs_stat_fd+0x1b/0x4a Mar 8 03:33:23 web1 kernel: [80023703] sys_newstat+0x19/0x31 Mar 8 03:33:23 web1 kernel: [8005d116] system_call+0x7e/0x83 If anyone has some advice on where to go from here it would be greatly appreciated. Thanks in advance. -- PJF ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Have you tried disabling the cron job you think is at fault to see if the lock up goes away? Also, have you checked all the users' crontabs? Boris. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] UDP Perfomance tuning
Hi, We are running on 5.5 on a HP ProLiant DL360 G6. Kernel version is 2.6.18-194.17.1.el5 (we had also tested with the latest available kernel kernel-2.6.18-238.1.1.el5.x86_64) We running some performance tests using the iperf utility. We are seeing very bad and inconsistent performance on the UDP testing. The maximum we could get, was 440 Mbits/sec, and it varies from 250 to 440 Mbits/sec. That hurts. So, what speed do you get using TCP? You should really get almost wire speed with TCP, so I expect to be the same with UDP. I'm usually testing raw TCP transfers with mbuffer listening on one side and piping data to in using bash on the other side, like 'cat /dev/null /dev/tcp/host/port' BTW, I have never used iperf, but is it sane to run it via strace? It will for sure slow things down. Simon We are connected on a 1000Mb/s link, we also tested the same using a cross-over connections between the two machines, but the same performance. We also see a lot of dropped UDP packets. Udp: 551522838 packets received 1902 packets to unknown port received. 109709802 packet receive errors 7239 packets sent We had checked all the kernel configurations and set them as recommended. This is the settings and tests we have done Server: net.core.rmem_default = 2097152 net.core.wmem_default = 2097152 net.core.rmem_max = 8388608 net.core.wmem_max = 8388608 strace -fttt -o /tmp/server.trace iperf -s -u -p -w 6m -i 5 -l 1k Client: net.core.rmem_default = 2097152 net.core.wmem_default = 2097152 net.core.rmem_max = 8388608 net.core.wmem_max = 8388608 strace -fttt -o /tmp/client.trace iperf -p -u -w 6m -i 5 -t 60 -c 192.168.1.2 -b 990M -l 1k Can someone please help me with this, since I am running in circles and can't get the required UDP performance? -- Prasad Pillarisetti If everything is coming your way, then you are in the wrong lane ___ 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] Server locking up everyday around 3:30 AM
PJ wrote: This may or may not be CentOS related, but am out of ideas at this point and wanted to bounce this off the list. I'm running a CentOS 5.5 server, running the latest kernel 2.6.18-194.32.1.el5. Almost everyday around 3:30 AM the server completely locks up and has to be power cycled before it will come back online. (this means someone hat to wake up and reboot the server, oh how I love being an internet janitor! :) Please log of the Internet. We are cleaning it. You may log back on later. snip I was able to pull this from /var/log/messages, this happens just seconds before locking up completely... Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than 120 seconds. Mar 8 03:33:19 web1 kernel: echo 0 /proc/sys/kernel/hung_task_timeout_secs disables this message. Mar 8 03:33:19 web1 kernel: wget D 810001004420 0 13608 13607 (NOTLB) Mar 8 03:33:19 web1 kernel: 81007bc7bc78 0086 81007bc7bd88 81000100d3f8 Mar 8 03:33:19 web1 kernel: 81007bc7bbf0 0007 8100849db0c0 80308b60 Mar 8 03:33:19 web1 kernel: 00013a2964cdf439 3237 8100849db2a8 64c82eae Mar 8 03:33:19 web1 kernel: Call Trace: Mar 8 03:33:20 web1 kernel: [80063c6f] __mutex_lock_slowpath+0x60/0x9b snip Anyone else smell an OOM killer? But it's clearly whatever the wget's after that's killing the system. mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM
On Fri, Mar 11, 2011 at 10:06 AM, m.r...@5-cent.us wrote: PJ wrote: This may or may not be CentOS related, but am out of ideas at this point and wanted to bounce this off the list. I'm running a CentOS 5.5 server, running the latest kernel 2.6.18-194.32.1.el5. Almost everyday around 3:30 AM the server completely locks up and has to be power cycled before it will come back online. (this means someone hat to wake up and reboot the server, oh how I love being an internet janitor! :) Please log of the Internet. We are cleaning it. You may log back on later. snip I was able to pull this from /var/log/messages, this happens just seconds before locking up completely... Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than 120 seconds. Mar 8 03:33:19 web1 kernel: echo 0 /proc/sys/kernel/hung_task_timeout_secs disables this message. Mar 8 03:33:19 web1 kernel: wget D 810001004420 0 13608 13607 (NOTLB) Mar 8 03:33:19 web1 kernel: 81007bc7bc78 0086 81007bc7bd88 81000100d3f8 Mar 8 03:33:19 web1 kernel: 81007bc7bbf0 0007 8100849db0c0 80308b60 Mar 8 03:33:19 web1 kernel: 00013a2964cdf439 3237 8100849db2a8 64c82eae Mar 8 03:33:19 web1 kernel: Call Trace: Mar 8 03:33:20 web1 kernel: [80063c6f] __mutex_lock_slowpath+0x60/0x9b snip Anyone else smell an OOM killer? But it's clearly whatever the wget's after that's killing the system. mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos What makes no sense to me is this runs every 5 minutes all day, but only around 3:30 AM does it look up. There is nothing in the log that suggests the kernel is having to kill processes because it is out of resources. No httpd invoked oom-killer etc... which I have seen before in other situations. http://bugs.centos.org/view.php?id=4515 sounds like what I have going on, but not with kjournald of course... Thanks, -- PJ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Web server becoming unresponsive : high load
Hi, I have a web server which is randomly becoming unresponsive. I've checked for hardware problems with no luck : - no ethernet errors - no disk errors - no memory errors So far I've managed to point the trouble at the web server since if I restart httpd (apache) it comes back to normal. This is not a shared server so I control (or at least like to think of) what is hosted so I have two suspects: a) my own code is behaving strangely. For example, a php script that in a given situation/parameters increases the usage. b) some sort of attack. Either in conjunction to a or other vulnerability. I am looking for advices in how can I pin point since looking at every line of code would be infeasible. Centos 5.5 / apache / php 5.2.10 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM
centos-boun...@centos.org wrote: What makes no sense to me is this runs every 5 minutes all day, but only around 3:30 AM does it look up. http://bugs.centos.org/view.php?id=4515 sounds like what I have going on, but not with kjournald of course... Thanks, Can you skip the runs from 3 to 4 AM (or 3:15 to 3:45)? It might be what the target of wget is doing on *their* end that makes your access fatal to your machine. Insert spiffy .sig here: Life is complex: it has both real and imaginary parts. //me *** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept for the presence of computer viruses. www.Hubbell.com - Hubbell Incorporated** ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] debugging auto mount configuration
On Fri, Mar 11, 2011 at 8:22 AM, Boris Epstein borepst...@gmail.com wrote: Hello there, I successfully use automount to mount a large XFS pargtition on one CentOS 5.5 machine. I then tried to do the same thing on a different machine - and it simply would not work! The configuration is done in the same fashion, I checked and double-checked the syntax - but it is still a no go. When I use the mount command the partition mounts perfectly. I have tried running automount --debug and automount --verbose and thus far have not seen any messages that would shed any light on what's going on. So I am a bit lost at the moment. Any advice on how to proceed would be much appreciated. Boris. Posting your automount tables might help. So would double checking that you both machines are up-to-date on patches: autofs has undergone significant improvement in the last year or two. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM
On 3/11/2011 12:20 PM, PJ wrote: What makes no sense to me is this runs every 5 minutes all day, but only around 3:30 AM does it look up. When did it start happening? Did it correspond to any hardware change or software update that you can pin down? http://bugs.centos.org/view.php?id=4515 sounds like what I have going on, but not with kjournald of course... Is anything else happening that might make the disks busy around then? Maybe the raid-check job in cron.weekly is still running? -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM
PJ wrote: On Fri, Mar 11, 2011 at 10:06 AM, m.r...@5-cent.us wrote: PJ wrote: snip I'm running a CentOS 5.5 server, running the latest kernel 2.6.18-194.32.1.el5. Almost everyday around 3:30 AM the server completely locks up and has to be power cycled before it will come back online. (this means someone hat to wake up and reboot the server, oh how I love being an internet janitor! :) snip I was able to pull this from /var/log/messages, this happens just seconds before locking up completely... Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than 120 seconds. Mar 8 03:33:19 web1 kernel: echo 0 /proc/sys/kernel/hung_task_timeout_secs disables this message. Mar 8 03:33:19 web1 kernel: wget D 810001004420 0 13608 13607 (NOTLB) Mar 8 03:33:19 web1 kernel: 81007bc7bc78 0086 81007bc7bd88 81000100d3f8 Mar 8 03:33:19 web1 kernel: 81007bc7bbf0 0007 8100849db0c0 80308b60 Mar 8 03:33:19 web1 kernel: 00013a2964cdf439 3237 8100849db2a8 64c82eae Mar 8 03:33:19 web1 kernel: Call Trace: Mar 8 03:33:20 web1 kernel: [80063c6f] __mutex_lock_slowpath+0x60/0x9b snip Anyone else smell an OOM killer? But it's clearly whatever the wget's after that's killing the system. What makes no sense to me is this runs every 5 minutes all day, but only around 3:30 AM does it look up. There is nothing in the log that suggests the kernel is having to kill processes because it is out of resources. No httpd invoked oom-killer etc... which I have seen before in other situations. http://bugs.centos.org/view.php?id=4515 sounds like what I have going on, but not with kjournald of course... Couple things: a few weeks ago, we were getting OOM Killer running with no log entries, but that was due to someone starting a parallel processing job that wanted all the cores... and near the end, wanted half again the memory, and *all* the threads hit that point apparently so fast OOM Killer didn't have time or memory to run. Another thing: it may be running every five minutes, but you might want to look at what it gets at 03:30 that might be different than the rest of the day, such as a major backup, or an entire day's reconsiliations, complete with gigabytes of scans mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] HTtrack for Centos 5.5 ?
Does anyone know how to install HTtrack on Centos 5.5 please ? -- With best regards, Paul. England, EU. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Web server becoming unresponsive : high load
robert mena wrote: Hi, I have a web server which is randomly becoming unresponsive. I've checked for hardware problems with no luck : - no ethernet errors - no disk errors - no memory errors So far I've managed to point the trouble at the web server since if I restart httpd (apache) it comes back to normal. This is not a shared server so I control (or at least like to think of) what is hosted so I have two suspects: a) my own code is behaving strangely. For example, a php script that in a given situation/parameters increases the usage. b) some sort of attack. Either in conjunction to a or other vulnerability. You said you've checked for hardware errors, Robert - how 'bout other errors. For example, when it becomes unresponsive, what's top or free tell you? mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM
Les Mikesell wrote: On 3/11/2011 12:20 PM, PJ wrote: What makes no sense to me is this runs every 5 minutes all day, but only around 3:30 AM does it look up. When did it start happening? Did it correspond to any hardware change or software update that you can pin down? http://bugs.centos.org/view.php?id=4515 sounds like what I have going on, but not with kjournald of course... Is anything else happening that might make the disks busy around then? Maybe the raid-check job in cron.weekly is still running? Any chance of something *not* on your server, such as a router or firewall doing something then? mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Alternatives to apache for php based servers: Nginx
Hi, Anyone here using Nginx as alternative to apache in conjunction to php scripts? Care to share thoughts and caveats? I am reading that it is a good alternative but do not know the real life limitations, diferences to apache, which repo to fetch etc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] HTtrack for Centos 5.5 ?
On Fri, 11 Mar 2011 18:47:01 + Always Learning wrote: Does anyone know how to install HTtrack on Centos 5.5 please ? Do you mean httrack? If so, I have an httrack-3.43.12-1.el5.src.rpm and httrack-3.43.12-1.x86_64.rpm here. -- MELVILLE THEATRE ~ Melville Sask ~ www.melvilletheatre.com www.creekfm.com - FIFTY THOUSAND WATTS of POW WOW POWER! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM
PJ wrote: Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than 120 seconds. Check the number of dirty pages: grep Dirty /proc/meminfo relative to the dirty_ratio setting: cat /proc/sys/vm/dirty_ratio to see if the system is going into synhronous flush mode around that time (especially if dirty_ratio is large and you have a lot of physical memory). This is what I usually see as the cause of the blocked for more than message. I've also found that it can be several minutes, and up to 20 minutes, before the system recovers (but recover it always does). -Steve ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Alternatives to apache for php based servers: Nginx
On 3/11/2011 12:54 PM, robert mena wrote: Hi, Anyone here using Nginx as alternative to apache in conjunction to php scripts? Care to share thoughts and caveats? I am reading that it is a good alternative but do not know the real life limitations, diferences to apache, which repo to fetch etc. What problem are you trying to solve with apache? -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum tries to install a mix of architectures
This is pretty much the most useful thread I've ever been a part of on
the CentOS mailing list!!
Thanks a ton to everyone who helped!!
Also the senior SA I work with gave me this little gem today:
yum -y remove $(yum list installed | awk '{print $1}'| egrep -v
(x86_64|noarch))
But of course make SURE you uname -a and make sure the arch is right
before you do because of the -y flag or of course just remove it if
that makes you more comfortable!
Best!
Tim
On Tue, Mar 8, 2011 at 2:23 PM, Nico Kadel-Garcia nka...@gmail.com wrote:
On Tue, Mar 8, 2011 at 12:05 PM, Akemi Yagi amy...@gmail.com wrote:
On Tue, Mar 8, 2011 at 8:54 AM, Johnny Hughes joh...@centos.org wrote:
I would also do this:
yum reinstall \*
The reason being that sometimes the /usr/share/ items (shared between
BOTH packages) get removed when removing multi arch RPMS.
The above lines added to the FAQ:
http://wiki.centos.org/FAQ/General?action=show#head-357346ff0bf7c14b0849c3bcce39677aaca528e9
Take a look at
http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Migration_Planning_Guide/ch09s05.html.
The better solution, at least for CentOS 5, is to add this to /etc/yum.conf
# Disable auto-installation of i386 and x86_64
#multilib_policy=all
multilib_policy=best
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Re: [CentOS] Apache/Active Directory authentication
Okay... so at this point I am stuck. I got this far: Using modules: LoadModule auth_basic_module modules/mod_auth_basic.so LoadModule auth_kerb_module modules/mod_auth_kerb.so root@myserver conf]# net ads testjoin Join is OK I successfully joined domain. [root@myserver conf]# klist -k Keytab name: FILE:/etc/krb5.keytab KVNO Principal -- 2 host/myserver.server@core.host.edu 2 host/rmyserver.server@core.host.edu 2 host/myserver.server@core.host.edu 2 host/myser...@core.host.edu 2 host/myser...@core.host.edu 2 host/myser...@core.host.edu 2 MYSERVER$@CORE.HOST.EDU 2 MYSERVER$@CORE.HOST.EDU 2 MYSERVER$@CORE.HOST.EDU 2 http/myserver.server@core.host.edu 2 http/myserver.server@core.host.edu 2 http/myserver.server.com@CORE.HOSTEDU 2 http/myser...@core.host.edu 2 http/myser...@core.host.edu 2 http/myser...@core.host.edu My problem is that I am getting an error message in apache logs: gss_acquire_cred() failed: Unspecified GSS failure. Minor code may provide more information (No principal in keytab matches desired name) I looked in AD configuration and see that my server does not have appropriate ServicePrincipalName for HTTP (only host). my keytab file: -rw--- 1 apache apache 957 Mar 11 14:31 /etc/httpd/conf/krb5.keytab I have NO right access to AD server and cannot do much about creating proper keytab file. Anything else I can do? Am I missing something? Thank you! Asya On Mar 10, 2011, at 12:24 PM, John Hodrien wrote: On Thu, 10 Mar 2011, Dvorkin, Asya wrote: John, Thank you for all your pointers! You are right.. I was able to create a keytab file. Still having some issues with getting apache to work the way I wan to, but will continue troubleshooting it. No problem, and I'll be interested to hear about any other problems you have. I don't get the feeling many people use kerberised Apache. jh ___ 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] Apache/Active Directory authentication
I looked in AD configuration and see that my server does not have appropriate ServicePrincipalName for HTTP (only host). Of course it doesn't, you gathered that ticket by joining the domain with Samba, but are not using samba auth with apache... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] debugging auto mount configuration
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Boris Epstein Sent: Friday, March 11, 2011 8:23 To: CentOS mailing list Subject: [CentOS] debugging auto mount configuration SNIP I have tried running automount --debug and automount --verbose and thus far have not seen any messages that would shed any light on what's going on. So I am a bit lost at the moment. Any advice on how to proceed would be much appreciated. Boris. It looks like you have started down this road, but jmoyer (IIRC one of the guys Red Hat has working on autofs) has a page of things that he wants to see when trying to debug your autofs problems. Perhaps taking a look here might help. http://people.redhat.com/jmoyer/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM - (INFO: task wget:13608 blocked for more than 120 seconds) need sleep, help.
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of PJ Sent: Friday, March 11, 2011 12:34 To: centos@centos.org Subject: [CentOS] Server locking up everyday around 3:30 AM - (INFO: task wget:13608 blocked for more than 120 seconds) need sleep, help. SNIP There are no cron jobs that run at 3:30, no backups, the server has a load of 0, nothing is scheduled around that time... SNIP Are you sure the stuff in /etc/cron.daily/ is done by then or not started yet? Could be something like the mlocate or makewhatis chewing up CPU/Mem. IIRC the stuff in /etc/cron.daily/ runs in alphabetic order so, are you (root) getting the logwatch messages, and at what time? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apache/Active Directory authentication
It appears as though you need to create a proper SPN/keytab from the AD server: http://publib.boulder.ibm.com/infocenter/wasinfo/v6r1/index.jsp?topic=/com.ibm.websphere.express.doc/info/exp/ae/tsec_SPNEGO_config_dc.html -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of David Brian Chait Sent: Friday, March 11, 2011 1:15 PM To: CentOS mailing list Subject: Re: [CentOS] Apache/Active Directory authentication I looked in AD configuration and see that my server does not have appropriate ServicePrincipalName for HTTP (only host). Of course it doesn't, you gathered that ticket by joining the domain with Samba, but are not using samba auth with apache... ___ 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] Alternatives to apache for php based servers: Nginx
On 03/11/2011 10:54 AM, robert mena wrote: Hi, Anyone here using Nginx as alternative to apache in conjunction to php scripts? Care to share thoughts and caveats? I am reading that it is a good alternative but do not know the real life limitations, diferences to apache, which repo to fetch etc. First off let me say that nginx is awesome. If you are running a LAMP stack and cannot use fastcgi with apache then you can put nginx in front of apache to handle static content requests. Result is dramatic decrease in memory footprint since you can reduce the number of concurrent apache procs. Nginx uses a more efficient request handling so you can serve thousands of clients in under 100MB. I think you can also use fastcgi with nginx. I haven't done it. Apache can achieve similar efficiencies with the alternate mpm models i.e. not prefork. -- Mark D. Foster m...@foster.cc http://mark.foster.cc/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Alternatives to apache for php based servers: Nginx
On 3/11/2011 4:38 PM, Mark Foster wrote: On 03/11/2011 10:54 AM, robert mena wrote: Hi, Anyone here using Nginx as alternative to apache in conjunction to php scripts? Care to share thoughts and caveats? I am reading that it is a good alternative but do not know the real life limitations, diferences to apache, which repo to fetch etc. First off let me say that nginx is awesome. If you are running a LAMP stack and cannot use fastcgi with apache then you can put nginx in front of apache to handle static content requests. Result is dramatic decrease in memory footprint since you can reduce the number of concurrent apache procs. Nginx uses a more efficient request handling so you can serve thousands of clients in under 100MB. I think you can also use fastcgi with nginx. I haven't done it. Apache can achieve similar efficiencies with the alternate mpm models i.e. not prefork. We use nginx for caching less-dynamic content as well - all our public pages are served up with the right caching headers and no cookies, which allows nginx to serve out of its own cache. We're running mod_perl, but the same principle works for php. This is in addition to all the static files (templates, js, css, design images) being served directly by nginx. It's taken us from falling over on 50 concurrent users a year ago to handling 2000 concurrent users without any slowdown. Once you get your public pages cached properly in nginx, apache no longer becomes your bottleneck... -- Jim Nelson Systems Administrator, Broadtime (888) 582-3229 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] rpm 9.7.3 for epel-6 and centos 5.5
hello centos list I recompile the source rpm fedora core 14 on my centos 5.5. I wrote a post on my blog to explain how I did. goo.gl/p0sqF I also recompile the rpm via koji to epel 6 and the result is possitive goo.gl/OQwIX package is on it safe sincerely -- gpg --keyserver pgp.mit.edu --recv-key 092164A7 http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0x092164A7 signature.asc Description: Ceci est une partie de message numériquement signée ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM
On Fri, Mar 11, 2011 at 11:05 AM, Steve Thompson s...@vgersoft.com wrote: PJ wrote: Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than 120 seconds. Check the number of dirty pages: grep Dirty /proc/meminfo relative to the dirty_ratio setting: cat /proc/sys/vm/dirty_ratio to see if the system is going into synhronous flush mode around that time (especially if dirty_ratio is large and you have a lot of physical memory). This is what I usually see as the cause of the blocked for more than message. I've also found that it can be several minutes, and up to 20 minutes, before the system recovers (but recover it always does). -Steve ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Great replies from everyone, I really appreciate the feedback. Interesting entries in /var/log/cron: -snip- (this runs 24/7 every 5 minutes as normal...) Mar 11 02:20:01 web1 crond[12919]: (webuser) CMD (wget -q www.domain.com/cron.php /dev/null 21) Mar 11 02:25:01 web1 crond[12950]: (webuser) CMD (wget -q www.domain.com/cron.php /dev/null 21) Mar 11 02:30:01 web1 crond[12969]: (webuser) CMD (wget -q www.domain.com/cron.php /dev/null 21) Mar 11 02:35:01 web1 crond[12992]: (webuser) CMD (wget -q www.domain.com/cron.php /dev/null 21) Mar 11 02:40:01 web1 crond[13014]: (webuser) CMD (wget -q www.domain.com/cron.php /dev/null 21) Mar 11 02:45:01 web1 crond[13218]: (webuser) CMD (wget -q www.domain.com/cron.php /dev/null 21) -snip- (fast forward to 3 AM, the same cron job starts getting delayed by 3:27 the server was non responsive. Never seen this before) Mar 11 03:01:01 web1 crond[13613]: (root) CMD (run-parts /etc/cron.hourly) Mar 11 03:07:20 web1 crond[13727]: (webuser) error: Job execution of per-minute job scheduled for 03:05 delayed into subsequent minute 03:07. Skipping job run. Mar 11 03:07:20 web1 crond[13727]: CRON (webuser) ERROR: cannot set security context Mar 11 03:13:00 web1 crond[13825]: (webuser) error: Job execution of per-minute job scheduled for 03:10 delayed into subsequent minute 03:13. Skipping job run. Mar 11 03:13:00 web1 crond[13825]: CRON (webuser) ERROR: cannot set security context Mar 11 03:19:29 web1 crond[13854]: (webuser) error: Job execution of per-minute job scheduled for 03:15 delayed into subsequent minute 03:19. Skipping job run. Mar 11 03:20:16 web1 crond[13890]: (webuser) CMD (wget -q www.domain.com/cron.php /dev/null 21) Mar 11 03:21:01 web1 crond[13854]: CRON (webuser) ERROR: cannot set security context Mar 11 03:27:41 web1 crond[13912]: (webuser) error: Job execution of per-minute job scheduled for 03:25 delayed into subsequent minute 03:27. Skipping job run. Mar 11 03:27:42 web1 crond[13912]: CRON (webuser) ERROR: cannot set security context Mar 11 03:32:05 web1 crond[13930]: (webuser) error: Job execution of per-minute job scheduled for 03:30 delayed into subsequent minute 03:32. Skipping job run. Mar 11 03:32:05 web1 crond[13930]: CRON (webuser) ERROR: cannot set security context Mar 11 03:36:23 web1 crond[13948]: (webuser) error: Job execution of per-minute job scheduled for 03:35 delayed into subsequent minute 03:36. Skipping job run. Mar 11 03:36:23 web1 crond[13948]: CRON (webuser) ERROR: cannot set security context (rebooted) Mar 11 03:41:15 web1 crond[4776]: (CRON) STARTUP (V5.0) -snip- I don't think it is a coincidence I'm seeing CRON (webuser) ERROR: cannot set security context around the same time the server stops responding. I'm not familiar with this message, anyone here seen it? cron daily fires off at 4:02, after all this stuff... nothing in cron.hourly.. Getting warmer I think, but still cant figure it out! -- PJ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Web server becoming unresponsive : high load
Robert mena wrote on Fri, 11 Mar 2011 14:26:03 -0400: php 5.2.10 upgrade Kai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM
PJ wrote: On Fri, Mar 11, 2011 at 11:05 AM, Steve Thompson s...@vgersoft.com wrote: PJ wrote: Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than 120 seconds. snip Great replies from everyone, I really appreciate the feedback. Interesting entries in /var/log/cron: snip Mar 11 03:01:01 web1 crond[13613]: (root) CMD (run-parts /etc/cron.hourly) Mar 11 03:07:20 web1 crond[13727]: (webuser) error: Job execution of per-minute job scheduled for 03:05 delayed into subsequent minute 03:07. Skipping job run. Mar 11 03:07:20 web1 crond[13727]: CRON (webuser) ERROR: cannot set security context snip SELINUX! Look at /var/log/messages for an selinux error: if you don't have sealert, install the package, then use it on /var/log/audit. Or put selinux in permissive mode. mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Web server becoming unresponsive : high load
Ok. centos does not offer any newer than this. got a better place to use? On Fri, Mar 11, 2011 at 6:31 PM, Kai Schaetzl mailli...@conactive.comwrote: Robert mena wrote on Fri, 11 Mar 2011 14:26:03 -0400: php 5.2.10 upgrade Kai ___ 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] rpm 9.7.3 for epel-6 and centos 5.5
2011/3/11 fakessh @ fake...@fakessh.eu: hello centos list I recompile the source rpm fedora core 14 on my centos 5.5. I wrote a post on my blog to explain how I did. goo.gl/p0sqF I also recompile the rpm via koji to epel 6 and the result is possitive goo.gl/OQwIX package is on it safe *Cool*. That could be *very* useful for centosplus, to allow CentOS 5.x systems to build CentOS 5.x packages in mock. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Web server becoming unresponsive : high load
On 03/11/11 2:45 PM, robert mena wrote: Ok. centos does not offer any newer than this. indeed, el5's default version is 5.1.6, and there's nothing newer than that in the standard repositories, so your 5.2.10 must have come from somewhere else? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum tries to install a mix of architectures
On Fri, Mar 11, 2011 at 2:32 PM, Tim Dunphy bluethu...@gmail.com wrote:
This is pretty much the most useful thread I've ever been a part of on
the CentOS mailing list!!
Thanks a ton to everyone who helped!!
Also the senior SA I work with gave me this little gem today:
yum -y remove $(yum list installed | awk '{print $1}'| egrep -v
(x86_64|noarch))
But of course make SURE you uname -a and make sure the arch is right
before you do because of the -y flag or of course just remove it if
that makes you more comfortable!
Best!
Tim
Tim, unless you've misinterpreted what he said, that senior SA
should have his scripting privileges revoked and his title replaced
with script-kiddie wanna-be. That command is hideously dangerous.
The first flaw is that it will flush the GPG keys, which have
architecture '(none)'
The second flaw is that noarch and x86_64 packages may have
*dependencies* on components that are i386 or i686 or some other
architecture, and rippiong out the i386 packages may rip out the
x86_64 packages as well.
Third is that using yum to generate the target list will wind up
trying to remove packages you don't even have installed, or packages
that have i386 versions in one repository but not in the other
repository, and cause *real* chaos.
If you need to do something like this, take a look at an actual list
generated with
LANG=C rpm -qa --qf '%{name}.%{arch}\n | egrep -v
(x86_64|noarch))
Then use yum to go down the list and *manually* accept them, not
automatically, for your own safety.
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Re: [CentOS] Server locking up everyday around 3:30 AM
On Fri, Mar 11, 2011 at 2:33 PM, m.r...@5-cent.us wrote: PJ wrote: On Fri, Mar 11, 2011 at 11:05 AM, Steve Thompson s...@vgersoft.com wrote: PJ wrote: Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than 120 seconds. snip Great replies from everyone, I really appreciate the feedback. Interesting entries in /var/log/cron: snip Mar 11 03:01:01 web1 crond[13613]: (root) CMD (run-parts /etc/cron.hourly) Mar 11 03:07:20 web1 crond[13727]: (webuser) error: Job execution of per-minute job scheduled for 03:05 delayed into subsequent minute 03:07. Skipping job run. Mar 11 03:07:20 web1 crond[13727]: CRON (webuser) ERROR: cannot set security context snip SELINUX! Look at /var/log/messages for an selinux error: if you don't have sealert, install the package, then use it on /var/log/audit. Or put selinux in permissive mode. mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos I thought about that :) [root@web1 ~]# sestatus SELinux status: disabled It's already disabled and always has been. Thanks, -- PJ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rpm 9.7.3 for epel-6 and centos 5.5
2011/3/11 fakessh @ fake...@fakessh.eu: hello centos list I recompile the source rpm fedora core 14 on my centos 5.5. I wrote a post on my blog to explain how I did. goo.gl/p0sqF I also recompile the rpm via koji to epel 6 and the result is possitive goo.gl/OQwIX package is on it safe OK, I misinterpreted the title of this. But you don't need to do this!!! If you look at the bind97 package from RHEL 5.6, available at http://mirrors.kernel.org/redhat/redhat/linux/enterprise/5Server/en/os/SRPMS/bind97-9.7.0-6.P2.el5.src.rpm, you'll see that it already provides all of this as necessary in a format compatible and unlikely to overwrite updates from the upstream vendor.. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM - (INFO: task wget:13608 blocked for more than 120 seconds) need sleep, help.
On Mar 11, 2011, at 12:33 PM, PJ pauljer...@gmail.com wrote: This may or may not be CentOS related, but am out of ideas at this point and wanted to bounce this off the list. I'm running a CentOS 5.5 server, running the latest kernel 2.6.18-194.32.1.el5. Almost everyday around 3:30 AM the server completely locks up and has to be power cycled before it will come back online. (this means someone hat to wake up and reboot the server, oh how I love being an internet janitor! :) Smells like a hardware issue to me too, but I went through all of the dell diagnostics, updated the firmware, everything checks out as being okay, RAID, disks, RAM, etc... Spent an hour on the phone with a Dell tech. No hardware issues, at least that we were able to find. There are no cron jobs that run at 3:30, no backups, the server has a load of 0, nothing is scheduled around that time... The only crontab entry at all is */5 * * * * wget -q www.websitedomain.com/cron.php /dev/null 21 They are running Magento for commerce purposes and this runs every 5 minutes. Why does the server only lockup around 3:30 AM? Because it's knows I am fast asleep? I was able to pull this from /var/log/messages, this happens just seconds before locking up completely... Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than 120 seconds. Mar 8 03:33:19 web1 kernel: echo 0 /proc/sys/kernel/hung_task_timeout_secs disables this message. Mar 8 03:33:19 web1 kernel: wget D 810001004420 0 13608 13607 (NOTLB) Mar 8 03:33:19 web1 kernel: 81007bc7bc78 0086 81007bc7bd88 81000100d3f8 Mar 8 03:33:19 web1 kernel: 81007bc7bbf0 0007 8100849db0c0 80308b60 Mar 8 03:33:19 web1 kernel: 00013a2964cdf439 3237 8100849db2a8 64c82eae Mar 8 03:33:19 web1 kernel: Call Trace: Mar 8 03:33:20 web1 kernel: [80063c6f] __mutex_lock_slowpath+0x60/0x9b Mar 8 03:33:20 web1 kernel: [80063cb9] .text.lock.mutex+0xf/0x14 Mar 8 03:33:20 web1 kernel: [8000cf82] do_lookup+0x90/0x1e6 Mar 8 03:33:20 web1 kernel: [8000a29c] __link_path_walk+0xa01/0xf5b Mar 8 03:33:20 web1 kernel: [8000ea4b] link_path_walk+0x42/0xb2 Mar 8 03:33:20 web1 kernel: [8000cd72] do_path_lookup+0x275/0x2f1 Mar 8 03:33:23 web1 kernel: [80012851] getname+0x15b/0x1c2 Mar 8 03:33:23 web1 kernel: [800239d1] __user_walk_fd+0x37/0x4c Mar 8 03:33:23 web1 kernel: [80028905] vfs_stat_fd+0x1b/0x4a Mar 8 03:33:23 web1 kernel: [80023703] sys_newstat+0x19/0x31 Mar 8 03:33:23 web1 kernel: [8005d116] system_call+0x7e/0x83 If anyone has some advice on where to go from here it would be greatly appreciated. Do a fsck of the file system wget is writing to as there might be a corruption it hits only on the 3:30am run as that's when the other vendor dumps data to be downloaded. You could also check to see if a RAID patrol read (scrub/predictive failure detection) is happening around this time as well and disable/reschedule it. -Ross ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM
PJ wrote: On Fri, Mar 11, 2011 at 2:33 PM, m.r...@5-cent.us wrote: PJ wrote: On Fri, Mar 11, 2011 at 11:05 AM, Steve Thompson s...@vgersoft.com wrote: PJ wrote: Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than 120 seconds. snip Great replies from everyone, I really appreciate the feedback. Interesting entries in /var/log/cron: snip Mar 11 03:01:01 web1 crond[13613]: (root) CMD (run-parts /etc/cron.hourly) Mar 11 03:07:20 web1 crond[13727]: (webuser) error: Job execution of per-minute job scheduled for 03:05 delayed into subsequent minute 03:07. Skipping job run. Mar 11 03:07:20 web1 crond[13727]: CRON (webuser) ERROR: cannot set security context snip SELINUX! Look at /var/log/messages for an selinux error: if you don't have sealert, install the package, then use it on /var/log/audit. Or put selinux in permissive mode. I thought about that :) [root@web1 ~]# sestatus SELinux status: disabled It's already disabled and always has been. acl's? mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server locking up everyday around 3:30 AM
Here's a thought: see what directory the wget's trying to put the file in. mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] screen saver unlock dialog window is not visible in clone mode
On Fri, Mar 11, 2011 at 8:30 AM, DarkKnight BrightWarrior bindasbe...@gmail.com wrote: Hi, Environment: I am using CentOS 5.3 operating system. I upgraded xorg of centos to 7.3. I am using intel 945 GM board. My xorg server version is 1.4.2 and inetl driver version 2.4.3. gnome-screensaver version is 2.16.1-8.el5. Don't. do that if you don't have to. You're trying to marry a far updated component to an out of date OS. *At least* update to CentOS 5.5 before proceeding, to avoid out-of-date component and kernel issues which Xorg 7.3 may rely on without even your knowledge. I've done precisely this kind of thing several times of the last 20 years, and you can save a lot of pain by making sure your base OS is up to date. Problem: I connected another system of same hardware using VGA output. Now I can see clone of my system on secondary display. I enabled screensaver with 1 minute period and also enabled locking feature using gnome-screensaver-preferences. After 1 minute screensaver appeared on both primary and secondary displays. But when I move mouse or press any key, Screen saver unlock dialog is not appearing. But when I type password, I am able to comeout of screensaver. So Screensver unlock dialog is there but it is not visible. When I remove secondary display, I mean when I am in single display mode screen saver unlock dialog is visible and working fine. So what could be the problem that causing screensaver unlock dialog window to appear/visible in clone/extended monitor mode. What is this same hardware? And how did you install Xorg 7.3? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Race condition with mdadm at boot [still mystifying]
On 03/11/2011 09:00 AM, Les Mikesell wrote: On 3/10/11 9:25 PM, Chuck Munro wrote: However, on close examination of dmesg, I found something very interesting. There were missing 'bindsd??' statements for one or the other hot spare drive (or sometimes both). These drives are connected to the last PHYs in each SATA controller ... in other words they are the last devices probed by the driver for a particular controller. It would appear that the drivers are bailing out before managing to enumerate all of the partitions on the last drive in a group, and missing partitions occur quite randomly. So it may or may not be a timing issue between the WD Caviar Black drives and both the LSI and Marvell SAS/SATA controller chips. I've seen some weirdness in powering up 6 or more SATA drives but never completely pinned down whether it was the controller, drive cage, or particular drives causing the problem. But I think my symptom was completely failing to detect some drives when certain combinations of disks were installed although each would work individually. Do you have any options about whether they power up immediately or wait until accessed? That's a good question, one I have experimented with. I don't have any choice as to when the drives are spun up (only on bootup), but I did try a controller card which pre-spun and checked the identification of the drives before handing off to the BIOS for bootup. That didn't help. On the particular Supermicro motherboard I'm using, there is a very long delay (10 or 15 sec) between power-on and initiation of visible BIOS activity, so all disk drives have ample time to spin up and stabilize. The drives' SMART data shows that the average spin-up time is well within the BIOS startup delay. Each drive activity indicator shows that they are always probed by the kernel's scsi scan process. I have since tried a couple of other tricks I found by Googling around ... setting the kernel parameters 'rootdelay=xx' and 'scsi_mod.scan=sync'. These had no effect on the problem. For some unfathomable reason, the last drives in each group of drives have one or more random partitions missing, with no 'bind' statement in dmesg. Other partitions on those drives are bound normally. This has been tested with at least two known-good replacement drives, with the same random results. On two occasions today, everything worked perfectly, but that was unusual. A friend of mine suggested an ugly hack - connect two 'dummy' unused old SATA drives to the last port of each controller (I'm using only 6 of 8 on each). I wonder if one of those $15 IDE-to-SATA converters would do the job (without a drive attached)? Foolish thought :-/ Chuck ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Alternatives to apache for php based servers: Nginx
Anyone here using Nginx as alternative to apache in conjunction to php scripts? Care to share thoughts and caveats? Yes, we use nginx + PHP and also apache + nginx + PHP extensively and it works well. You can also look at lighttpd + PHP as another alternative that works well. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
