Free up boot partition space on Linux servers

Free up boot partition space on Linux servers

Our current SAN server has only about 200 MB assigned to boot partition and therefore we need to ensure that old kernels are removed so that there is adequate space in the /boot partition. Following are the steps taken to resolve this issue:

Do the following to keep just the last 2 kernels on your system, to keep /boot clean

1 - Edit /etc/yum.conf and set the following parameter

installonly_limit=2

This will make your package manager keep just the 2 last kernels on your system(including the one that is running)

2 - Install yum-utils:

yum install yum-utils

3- Make an oldkernel cleanup:

package-cleanup --oldkernels --count=2

Done. This will erase in a good fashion the old kernels, and, keep just the last 2 of them for the next upgrades.

Ref: http://unix.stackexchange.com/questions/105026/boot-partition-is-almost-full-in-centos



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