www/content/blog/miscellaneous/clean-old-centos-kernels.md

title	date	description	tags
Clean old centos kernels	2016-02-03	Clean old centos kernels	Centos rhel

The problem

Centos kernels tend to accumulate unless you clean them regularly.

The solution

There is a setting in /etc/yum.conf that does exactly that : installonly_limit=. The value of this setting is the number of older kernels that are kept when a new kernel is installed by yum. If the number of installed kernels becomes greater than this, the oldest one gets removed at the same time a new one is installed.

This cleaning can also be done manually with a command that belongs to the yum-utils package : package-cleanup –oldkernels –count=2