{{tag>Brouillon Redhat Boot}}

= Notes kdump

Voir :
* [[https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s2-kdump-configuration-testing.html|Kdump]]
* http://fr.slideshare.net/BulandSingh/referenceguidekernelcrashdumpanalysis

''/etc/default/grub''
<code ini>
#GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"
GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb crashkernel=128M"
</code>

<code bash>
cp -p /boot/grub2/grub.cfg /boot/grub2/grub.cfg.bak
grub2-mkconfig > /boot/grub2/grub.cfg
</code>

''/etc/kdump.conf''
<code ->
default reboot
</code>

<code bash>
reboot
</code>

<code bash>
systemctl status kdump
</code>


== Autres

Serveur
<code bash>
fence_kdump -o off --nodename=node1
</code>


Client
<code bash>
/usr/libexec/fence_kdump_send -i 5 -c 1 node1
</code>
== Test

Crash
<code bash>
echo 1 > /proc/sys/kernel/sysrq
echo c > /proc/sysrq-trigger
</code>

<code bash>
ls -lrt /var/crash/
</code>