Rudi Ahlers пишет: > Hi all, > > One of our CentOS 5.3 randomly reboots, at different times of the day, > and I can't see why it's doing it. > > I have looked through the logs, but don't see any thing in there that > shows me why it has rebooted. How can I debug this? > >
Hi, try to enable kdump to get kernel dump, if this software-related issue. http://download.swsoft.com/virtuozzo/virtuozzo4.0/docs/en/lin/VzLinuxUG/20027.htm Using Kexec and Kdump For System Troubleshooting yum install kexec-tools edit /etc/grub.conf and append to the end of the kernel line: "crashkernel=1...@16m" chkconfig kdump on reboot Also look this: http://kbase.redhat.com/faq/docs/DOC-6039 How do I configure kexec/kdump on Red Hat Enterprise Linux 5? http://kbase.redhat.com/faq/docs/DOC-2119 How can I voluntarily crash my machine to test if netdump/diskdump/kdump I configured works? http://kbase.redhat.com/faq/docs/DOC-5413 My server crashes once in awhile. How can I debug it? http://kbase.redhat.com/faq/docs/DOC-1742 My system has started to hang randomly. What information does Red Hats technical support need to diagnose the problem? http://kbase.redhat.com/faq/docs/DOC-10828 My Red Hat Enterprise Linux 2.1 system had a kernel panic, an oops message, or is freezing for no apparent reason. How can I find out what is causing this? Next, I recommend you setup and run memtest86+.x86_64 : Stand-alone memory tester for x86 and x86-64 computers You should ask the support to reboot machine for a night and chose the memtest in grub loader. If DC has ipkvm - ask it. Also what a network card on your server ? I had some troubles with non-brand network card.. -- Best wishes, Sergej Kandyla Всегда улыбайтесь жизни и жизнь всегда улыбнется вам! _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
