On Thu, Jul 16, 2009 at 11:31 AM, Andrei F<frunzales at gmail.com> wrote: > Hello, > > I have CentOS 5.2 installed on two of the afore-mentioned blades. > I've noticed that the OS started to crash lately (kernel panic) and I've > been assigned the task to troubleshoot this issue. > > I would like to know what is the best way of recovering the kernel > dump after the OS crashes. > > I know there are two software implementations that would enable me > to do this, kexec and 'crash' , redhat's own implementation that allows > you to pust the dump via network to a remote machine. I've used kdump to troubleshoot these types of issues in the past: http://prefetch.net/blog/index.php/2009/07/06/using-kdump-to-get-core-files-on-fedora-and-centos-hosts/ Once you have a core file, you can use crash and company to figure out what caused the kernel to panic. - Ryan -- http://prefetch.net