Why does MySql fall off?

Question

MySQL

Good afternoon. For some reason, mysql, which is located on VPS Digital Ocean, falls off.
Here is a screenshot of the error log -
Mysql can be restarted from the VPS control panel, but after some time it falls off again.
Here is the result of the top command with mysql dumped -
Here is the result of the du -h command -
Tell me how to fix this and if possible in more detail, since I do not understand anything in administration.

Answer 1

Maybe they ran out of inodes, what the command writesdf -i

Answer 2

I suspect that he installed it crookedly and he stupidly has no rights. Ubuntu? Find the installation manual and uninstall, install again. And I don’t advise digital ocean, for example, your mail won’t work there without third-party services, plus there are servers from the time of dinosaurs and they work accordingly, a hatzer is better, it’s cheaper and 100 times better.

Answer 3

Because the DBMS cannot create/write a temporary file in /tmp