Over the life of a Linux you need to update the kernel from time to time. Over time, you may fill up your /boot partition and get the following error in SSH.
Transaction Check Error:
installing package kernel-2.6.32-431.29.2.el6.x86_64 needs 3MB on the /boot filesystem
Error Summary
Disk Requirements:
At least 3MB more space needed on the /boot filesystem. (your amount will vary of course)
This is easy to fix, simply run the following from SSH:
uname -a
This will give you a list of kernels. Example:
kernel-2.6.32-220.2.1.el6.x86_64
kernel-2.6.32-358.11.1.el6.x86_64
kernel-2.6.32-431.20.3.el6.x86_64
If we want to keep the last two, but delete the third and free up some room, we can do this by typing:
package-cleanup --oldkernels --count=2
As long as the oldest kernels are not being used, it should clean up the boot partition and let you run updates to the kernel.
To update the kernel, type:
yum update
Easy? You bet.
