Hi, I've configured my servers as described here: http://prefetch.net/blog/index.php/2009/07/06/using-kdump-to-get-core-files-on-fedora-and-centos-hosts/ When I try to start the kdump service via service kdump start, I get the following warnings: [root at lweb2 boot]# service kdump start No kdump initial ramdisk found. [WARNING] Rebuilding /boot/initrd-2.6.18-92.1.22.el5kdump.img Starting kdump: [FAILED] First of all I like the idea of automatically building an initrd image with kdump support, but I also need MPP support. Just to give you an example, this is how both machines are booting up: title RDAC CentOS (2.6.18-92.1.22.el5) with MPP root (hd0,0) kernel /vmlinuz-2.6.18-92.1.22.el5 ro root=/dev/VolGroup00/LogVol00 initrd /mpp-2.6.18-92.1.22.el5.img At this point I'm wondering how to generate an initrd image with mpp & kdump support. Also /var/log/messages gives me this: Jul 17 11:42:27 lweb2 kdump: No crashkernel parameter specified for running kernel Jul 17 11:42:27 lweb2 kdump: failed to start up I assume that once the server is being rebooted with the correct kernel arguments like crashkernel=128M at 16M and the correct initrd with mpp & kdump support the service should start just fine. Regards, -Andrei On Thu, Jul 16, 2009 at 7:38 PM, Matty <matty91 at gmail.com> wrote: > 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 > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20090717/82d55273/attachment-0005.html>