Why does VPS crash?

Question

Network administration

My VPS started crashing every day. From the available information about the problem, there is only this screen.

Tell me, please, what can I do at the time of the VPS crash to find out the reason for the lack of resources?

Answer 1

OOM Killer comes and kills the Apache.
The Indian eats too much.
Your best bet is to kill the Indian and switch to nginx.
Either twist the Indian, reduce the number of processes for him, so that he doesn’t get bored.

Answer 2

VPS does not crash, as you were told above - the web server and the LAMP bundle consume too much RAM.
you can contact the hosting support to upgrade the VPS and add more RAM, or set up the site and moderate its RAM consumption.
as an alternative - you can create / increase the swap, but there will be brakes.