jueves, 3 de septiembre de 2015

How to make Linux automatically reboot after a kernel panic? http://ask.systutorials.com/1436/how-to-make-linux-automatically-reboot-after-a-kernel-panic

ORIGINAL ARTICLE http://ask.systutorials.com/1436/how-to-make-linux-automatically-reboot-after-a-kernel-panic

Linux kernel has a nice feature that reboots itself after a timeout when a kernel panic happened.
Usually, it is disabled by default. To turn it on, you can set thekernel.panic kernel parameter.
For a running system:
# echo 20 >/proc/sys/kernel/panic
Here, 20 is the number of seconds before the kernel reboots. 0 means the feature is disabled.
To make the configuration persistent, you have 2 choices:
  1. add the kernel parameter panic=20 to your bootloader (grub or grub2).
  2. add kernel.panic = 20 to /etc/sysctl.conf .
After you enabled the auto reboot after kernel panic, you may need to check the uptime and logs or create a @reboot cron jobs to send emails or use some other mechanisms to know that there was a auto reboot caused by a kernel panic.