CentOS 5 :: Server Crashing Every Sunday Evening / What To Do?
May 18, 2009
I'm using Centos 5.3 with xen to virtualize some virtual machines (mostly windows 2003).
It works perfectly fine excepted one thing :
Each monday morning, the server is crashed with nothing noticeable in the logs that help.
Since it allways happen between sunday 22h00 and monday 05h00, I suspect a crash when running some cron tasks...
The server works fine. I look at cron.weekly and deactivated makewhatis.com which is the only task apart 0anacron...
But it makes no difference.
I really don't see what can cause such a regular failure... As I am more specialist on Debian, there may be some specific tasks running every week on centos I didn't noticed.
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Feb 18, 2010
My RHEL Machine is a Build server and always gets shutdown / rebooted at around 5:30 every evening. No idea whats going on as developers were unable to connect to the machine since three days. When I am visiting the physical server probably next morning (since last 3 days)its doesn't show anything and all i reboot the machine and it comes up without any issue. how to troubleshoot?
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Oct 4, 2010
i installed a new centos 5.5 1 old server hp ml380 g3 series on 2gb ram, 72gb raid 1+0 scsi disk
after running 1 sucessfull day next morning i found no response of ping, telnet, putty, ssh. when i check physically machine the mouse keyboard was hang, i reboot machine, then it says kernel panic failure mounting hardware, then next time i reboot the o/s centos start book properly and running. i check the dmesg logs, can someone guide me how to check cpu,raidcontroller,memory,harddrive are getting failed or what hardware exactly choking out.
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Mar 31, 2010
I use Fedora 12 AMD64 , and my daughter use it . and I have tom and jerry in my computer , I like my daughter only use game and learn many thing about computer , but she always see Tom and Jerry and waste time . Can I do something my daughtery see movie in evening .with VLC or mplayer or Script ?I want Fedora do not let him see movie in evening and let him see movie in morning ?I want Fedora disable use VLC or Mplayer in evening and enable it morning .---------- Post added at 06:22 PM CDT ---------- Previous post was at 11:45 AM CDT ----------
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Aug 8, 2011
All I want to do is set the machine to run a certain command (or a few) at 8 o'clock on a Sunday evening. The manual is no help, google (google keeps telling me how to do it with different cron demins rather than at) is no help, I'm at my wits' end.
Surely somebody somewhere on earth has needed to do this before??
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Jun 26, 2011
I'm still kinda noob in linux and I've installed Debian Squeeze (LXDE version) and it boots itself (the whole computer) at midnight from saterday to sunday. This is somewhat troubling me as I'm trying to sleep at that time. I've googled about this but I couldnt find very helpful information.
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Apr 20, 2011
Suse 11.3/Gnome 2.30.0
Evolution 2.30.1.2
I cannot get the monthly view to start the week on Sunday. The settings seem right but they don't stick. Restarting Evolution always defaults to a week start on Monday even though the defaults display Sunday. I've viewed the default settings the following two ways:
Within Evolution... Edit > Preferences > Calendar and Tasks > week starts on "Sunday"
GNOME Configuration editor.../apps/evolution/calendar/display/week_start_day = 0 (Sunday)
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Mar 18, 2011
ssist me to run the cron job only on last Sunday of March and last Sunday of October
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Oct 29, 2009
My web server has Centos 5.3 installed and uses webmin for the administration.Recently the login hangs on a black background with the mouse animation.After a long time I get the message "The greeter application appears to be crashing. Attempting to use a different one."I click OK and the message just repeats.
The web server is running fine and all the applications are still active.I can access the server via SSH.Also, I can login via my vncserver from another computer and access the gnome and kde interfaces.
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Apr 26, 2011
1st of all, I use my centos mainly as a desktop PC. It started about a few weeks ago when i did a yum update and there was a huge number of files to update. I think it was since then (really not sure) that my gnome panel kept crashing. There was a bug report text but no bug number. Changing new user profile, gnome panel hung as well.
Memory status: size: 83812352 vsize: 0 resident: 83812352 share: 0 rss: 13332480 rss_rlim: 0
CPU usage: start_time: 1303788595 rtime: 0 utime: 86 stime: 0 cutime:66 cstime: 0 timeout: 20 it_real_value: 0 frequency: 1
Backtrace was generated from '/usr/bin/gnome-panel'
[Thread debugging using libthread_db enabled]
0x00e7f402 in __kernel_vsyscall ()
#0 0x00e7f402 in __kernel_vsyscall ()
#1 0x002c0bc3 in __waitpid_nocancel () from /lib/i686/nosegneg/libpthread.so.0
#2 0x05da6c26 in ?? () from /usr/lib/libgnomeui-2.so.0
#3 <signal handler called>
#4 0x00e7f402 in __kernel_vsyscall ()
#5 0x0014c040 in raise () from /lib/i686/nosegneg/libc.so.6 .....
No symbol table info available.
A debugging session is active.
Inferior 1 [process 4295] will be detached.
Quit anyway? (y or n) [answered Y; input not from terminal]
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Dec 27, 2009
Recently switched my home server from Gentoo to CentOS and have been getting kernel panics consistently since I made the server "live". The machine was built with all new hardware. I'll post relevant configuration info and picture of the kernel panic below. So far all kernel panics have been with kernel "2.6.18-164.9.1.el5.centos.plus", right now I am testing with the kernel listed below to see if it does the same thing (2.6.18-164.9.1.el5).
justin@empire justin $ uname -rmi
2.6.18-164.9.1.el5 x86_64 x86_64
justin@empire justin $ rpm -qa |grep kernel |sort
kernel-2.6.18-164.6.1.el5
kernel-2.6.18-164.6.1.el5.centos.plus
kernel-2.6.18-164.9.1.el5
[Code]...
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Feb 25, 2011
I'm currently running LAMP on an Amazon instance. The OS is from the Amazon 64 bit image.
Basically, every so often MySQL seems to go down. All of my sites fail to connect to their databases. I then have to SSH in and restart mysqld.
Heres the last 30 lines of /var/log/mysqld.log code...
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Feb 20, 2010
For quite some time now, firefox has been crashing randomly. At first I thought it was the flash plugin, which was actually part of the program, but then I renamed the whole .mozilla/firefox directory, thus causing it to start fresh with no plugins or extensions. Firefox continued to crash, and in fact, now it seems worse. Now it will crash normally within about 2 minutes of having been started, and it will crash even if I don't do anything. If I just start it and leave it on the firefox start page, it will crash.
If I run it from the command line, I get this error when it crashes:
Code:
I am using X.org version 1.4.0.90.
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Jan 10, 2011
I have a few headless servers running in my home office and I can easily see how these machines could get lost or forgotten. Linux is such a beautiful operating system it often puzzles me why it isn't more popular. People say that Linux isn't user friendly, but honestly I think it's more user friendly than Windows. If you took two people who have never used a computer before and sat one down in front of a computer running Linux and the other person in front of a computer using Windows, I'd like to believe that the person using the Linux computer would excel much quicker.
Anyway, if you have a server running out of your home, or office, how long has your server ran without it crashing? Secondly, compare that figure against how long a computer running Microsoft has run without crashing or forcing a restart.
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May 2, 2011
I am getting below information from the core file on our production servers. one of our server is crashing with segmentation fault .Program terminated with signal 11, Segmentation fault.
#0 0x00b24332 in _int_malloc () from /lib/libc.so.6
(gdb) where
#0 0x00b24332 in _int_malloc () from /lib/libc.so.6
[code]....
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Feb 11, 2010
I have a VPS running a web application served using Apache, that on average deals with 20-50 requests per second. It's usually above this point (50 requests per second) that the amount of memory that Apache uses is too high for the VPS and errors start occuring - web pages crash and VPS falls over for a minute or two before going back to normal levels.
I believe that MaxClients is the best way to reduce the amount of RAM that Apache uses and I am planning to reduce MaxClients from 256 (default value) to around 100. Each Apache process uses ~15MB and the server has 1900MB of ram in total - the server does nothing else other than run Apache and a few crons.
Current setting are:
Code:
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 3
# prefork MPM
# StartServers: number of server processes to start
[Code].....
I tried reducing MaxClients before which lead to massive slowness, so I need some other options as well.
Does my suggestion of reducing MaxClients to ~100 seems sensible? What are my options if the server experiences slowness again - optimise the application? What's the best way to reduce memory usage - move images to another web server?
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Dec 21, 2009
I've got this issue for past week.
Mysql Crashes with 111 error although it starts back up instantly.
but i can't seem to figure out why.
-Server Is Deb. Lenny + Direct Admin.
Quad Core 2.5, 8GB Ram.
-Mysql ver 5.3
-Htop shows mysql is most of the time using 33 - 50% CPU.
(the init.d name is /etc/init.d/mysqld )
-This is from the err log of last crash. code...
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Mar 1, 2011
I'm running Redhat 5 which is running as an email server with Lotus Domino 8.5. Its a VM on ESX 3.5. The server was running out of space to so I added a new hardrive and mounted it to /domino/mail2, everything was fine for a couple of days, but then the machine became unresponsive, I couldn't even see anything on the console screen so I rebooted, it then did a file check and everything came up fine. This has now happened 2 more times over the past few days, I haven't seen any evidence that the extra disk is the problem but if I can't find anything else I will remove it and see if the problem goes away. There isn't really a consistent time it occurs.
Here's the output of the logs from the last time it happened if anybody who know more about this stuff then me ( which isn't a lot) wants to take a quick look as see if the problem is obvious or what I could be trying.
Mar 2 00:17:30 DOM2 kernel: mptscsih: ioc0: attempting task abort! (sc=ce6afbc0)
Mar 2 00:17:30 DOM2 kernel: sd 0:0:0:0:
Mar 2 00:17:30 DOM2 kernel: command: Write(10): 2a 00 01 3c 8c eb 00 00 08 00
Mar 2 00:17:30 DOM2 kernel: mptscsih: ioc0: task abort: SUCCESS (sc=ce6afbc0)
[Code].....
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Aug 12, 2009
I recently installed Fedora 11 on my machine, the configuration of which is: Intel Core i7 920 CPU, 3 GB DDR3 SDRAM, nVidia GTX295 Graphics Card. I initially used the default kmod-nvidia driver, but with a yum update, somehow a non-PAE kernel got installed and the kmod-nvidia driver did not get installed with it during the update for some reason. So I uninstalled the PAE kernel and associated kmod drivers, and downloaded the nVidia driver from the nVidia website. It ran just fine for a few days, and then all of a sudden, after a reboot, the X Server crashed and I had to log into the text mode, run
Code: setup and do the default X configuration. Then, I re-installed kmod-nvidia, with no luck. Sorry for being so vague about this, but I finally managed to get the CUDA driver (I need to use CUDA for my project work) to work (downloaded from [URL]). But after one reboot, the same problem resurfaced.
Now, I am in X Windows with a default 800x600 configuration using a generic visa driver, on a 23" monitor I have been rebooting my computer all morning and trying various things to get the driver to work again. I would be happy to furnish any details about the installed packages I have. For now, here is some information.
[Code]....
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Jan 12, 2011
Running Squid version 2.6.STABLE21 on CentOS5 release 5.5 (Final) in non transparent mode. All the browsers are configured to connect to the squid on the said port. And that is working fine in conjunction with dansguardian.I want to integrate ncsa_auth basic authentication mechanism into squid. And the error is what is mentioned in the thread title.
Here is cache.out file contents:
Code:
2011/01/12 18:16:14| Starting Squid Cache version 2.6.STABLE21 for i686-redhat-linux-gnu...
2011/01/12 18:16:14| Process ID 29318
2011/01/12 18:16:14| With 1024 file descriptors available
2011/01/12 18:16:14| Using epoll for the IO loop
2011/01/12 18:16:14| DNS Socket created at 0.0.0.0, port 52054, FD 6
[code]....
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Jun 1, 2009
I have a problem with compiling of mod_ruby-1.3.0 After a succesfull configure i get a error in the make, it say "make: *** [apachelib.o] error 1" . Here below you can find the results of de configuring and the make.I was following the roles in Howtoforge " The perfect server - Centos 5.3" everything goes perfect till mod_ruby-1.3.0
./configure.rb --with-apr-includes=/usr/include/apr-1
checking for a BSD compatible install... /usr/bin/install -c
checking whether we are using gcc... yes
[code]....
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Jul 26, 2010
is it possible to join Windows Server 2003 to CentOS 5 Cluster?
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Feb 22, 2011
when I reboot the server with centos 5.5 the SMB deamon doesn't start?
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Feb 17, 2009
and what is the diffrent. i now about the server only use command and desktop use both so. am trying to host some sites which one will you recomend.
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Mar 21, 2009
Sometimes when I do anything write heavy such as transferring backup or downloading large files from the net, the machine crashes almost completely.
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May 13, 2009
During the install of my Centos server 5.3 i cam in trouble after setting the Static IP address, Gateway and DNS i cannot connect to the internet my own network is visable. When i start ifconfig my network is running.
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Nov 12, 2010
I wish a easy server with CentOS. I need only: ssh, ftp for backup , sftp for over the web, apache2 php5 mysql webserver, easy install printserver for a laserprinter with a com-port, and in the future a samba server. make a choice which version i need with CentOS. I am a beginner at all.I only know things about ubuntu server. I like to know the differences.
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Jan 8, 2011
i have been trying to complete the following project1) Configure a FTP server where we can upload and download files.........2) server must run at 9 pm & stop at 9 am automatically ............although the first task was easy ,i have no idea how to accomplish the 2nd task(not to mention I'm a new user)
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Feb 7, 2011
I'm trying to setup RAID 1 on a CentOS 5 server for a zimbra email server.I get a partion schema error. Can I do this?The server is a HP Proliant ML150 G3 server with two 80GB HDD.
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Jan 1, 2010
I have two servers, both running CentOS, but one running Cpanel as the control panel and the other running Webmin.
I would like to sync the web folders using rsync. However, when I sync the files from the Cpanel host the permissions look as follows:
Code:
But that doesn't work on the Webmin server which needs the following:
Code:
It seems the Cpanel install has the group as 'nobody' whilst webmin has it the same as the file owner. I can fix this by running:
Code:
But as the file transfers will be frequent, I don't want the files to be inaccessible until chown is run.
So, what I really want to know is - how can I change things on the 'webmin' server so that files with ownership owner:nobody will run?
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