Différences

Ci-dessous, les différences entre deux révisions de la page.

--- tech:notes_kdump [2025/03/24 15:06] – créée - modification externe 127.0.0.1
+++ tech:notes_kdump [2026/06/07 19:12] (Version actuelle) – modification externe 127.0.0.1
@@ Ligne 1: / Ligne 1: @@
+<!DOCTYPE markdown>
+{{tag>Brouillon Redhat Boot}}
+# Notes kdump
+Voir :
+* [Kdump](https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s2-kdump-configuration-testing.html)
+* http://fr.slideshare.net/BulandSingh/referenceguidekernelcrashdumpanalysis
+`/etc/default/grub`
+~~~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"
+~~~
+~~~bash
+cp -p /boot/grub2/grub.cfg /boot/grub2/grub.cfg.bak
+grub2-mkconfig > /boot/grub2/grub.cfg
+~~~
+`/etc/kdump.conf`
+~~~
+default reboot
+~~~
+~~~bash
+reboot
+~~~
+~~~bash
+systemctl status kdump
+~~~
+## Autres
+Serveur
+~~~bash
+fence_kdump -o off --nodename=node1
+~~~
+Client
+~~~bash
+/usr/libexec/fence_kdump_send -i 5 -c 1 node1
+~~~
+## Test
+Crash
+~~~bash
+echo 1 > /proc/sys/kernel/sysrq
+echo c > /proc/sysrq-trigger
+~~~
+~~~bash
+ls -lrt /var/crash/
+~~~