stack trace page with kdump, possible?

[Bryn M. Reeves]

Gianluca Cecchi wrote:
> Hello,
> with CentOS 4 I was able to setup a server 1 with netdump client
> package and a netdump server 2 so that when a panic occured on 1, I
> received on the netdump server 2 both the vmcore file and another file
> named "log" containing stack trace (this log on 2 was also filled by
> commands such as "echo m > /proc/sysrq-trigger" issued on 1).
> With Fedora 10 and CentOS 5 I now have kdump. I configured it on both
> kinds of OS so that I successfully get an scp of the vmcore when I
> force a panic with
> echo c > /proc/sysrq-trigger.
> Unfortunately I don't get the log file with the stack trace page and
> this would be useful for example if the crash happens during the night
> and the display goes stbdy or if the server immediately reboots and
> you don't have the time to see the stack trace page.
> Any help if it is possible to configure kdump so that it repostrs also
> the stack page?
> Or if I can easily get the stack page from the vmcore file....?

Although network crash dumps via netdump have been removed from the 
distribution, the log messages can still be captured using the 
netconsole facility. See the configuration file in 
/etc/sysconfig/netconsole and the initscript /etc/init.d/netconsole.

You'll also need a syslog or netdump server configured on the network to 
capture the messages.

Regards,
Bryn.