By default the /boot partition is quite small, in some cases it could be only a few megabytes. If this is the case with when you try to update your kernel, you could get an error complaining about not enough free space on /boot.
Here’s an easy way on how to free up some space so that you could complete your kernel update as normal.
- Install yum-utils
12 yum install yum-utils
- Now we can clean some old kernel packages, to be on the safe side I would recommend keeping the –count to at least 2
12 package-cleanup --oldkernels --count=2
- This is pretty much it, you can then go ahead and update your kernel as normal
12 yum -y update kernel kernel-headers
Please note that you would need to reboot your server in order for the change to take effect.
To check your system information you could then simply run:
12 uname -a
Hope that this helps.