100% /boot - is it very scary?

Question

linux

Hello everyone, my boot is 100% loaded, is it very scary? I have so many things there now)

And another question is, can I find out the kernel version with the uname -r command and delete everything else except my version? I'm so worried because one day the server did not rise after the restart and the files that were needed to start were deleted or updated.

Answer 1

Everything was invented before us - manpages.ubuntu.com/manpages/xenial/man1/purge-old...

Answer 2

1. At some point, it may not start after the update.
2. Yes, you can, but I usually leave the previous 2 just in case.

Answer 3

use apt autoremove -y

Answer 4

In general, there is a good post on this topic - https://habrahabr.ru/post/116336/
And you can definitely somehow set the number of cores that can be in the system at the same time.