Using GUI
Link to download the PDF for enabling kernel crash dumps for RHEL 6.2 is at the end of the article.
Internal reference ZD 18666
--------------------------------------------
Using CLI
Additional notes on panic dumps, tested on RHEL 6.2 and 6.4
Make sure the entry
core_collector makedumpfile -c -d 31
exists in
/etc/kdump.conf
The dump will be in this path:
/var/crash/…./vmcore
--------------------------------------------
To manually caused a kernel panic:
echo 1 > /proc/sys/kernel/sysrq; echo c > /proc/sysrq-trigger
--------------------------------------------
Best practice note
It has been observed that no vmcore gets captured after a panic, this could depend on how the Venice is rebooted after the crash. A soft reset of control/alt/delete via an attached KVM to the Venice server will likely allow it to save the kernel dump. If a hard reset or power cycle is performed instead, this will likely not save the crash dump.
0 Comments