I've recently had this problem on two C7 systems, wherein when doing "yum update", I get a warning about /boot being low on space.
both systems were installed using the partition size recommended by Anaconda, right now "df -h" shows /boot as 494M, with 79M free.
I don't store unrelated crap on /boot, I assume that yum and/or grub will manage it for me. So, why, after over a year, is it running low on space on two different systems?
Is there some location in /boot where junk piles up, but shouldn't, that I have to know about so I can clean it out?
I see EIGHT initramfs files in /boot, two per kernel, same name but one has a kdump just before the .img suffix. do I need those for old kernels that I may or may not ever boot? (they're 30 to 50 MB each).
For the moment I've edited /etc/grub.conf and changed installonly_limit from 4 to 3. (related question: do I need to manually remove the oldest kernel, having done this, or will yum/grub clean it up the next time there's a kernel to install?)
thanks!
Fred