Is Digital Ocean killing user processes?

Question

DigitalOcean

There is a suspicion that DO terminates user processes at its own discretion. 512 MB + 20 GB plan, Ubuntu 16.04.

1) I start the daemon `dropbox.py start`, over time it stops working;
2) I run my Java application under screen (performs work in a loop), over time it stops working after some time (hours); there is nothing about it in the application logs; I solve it by automatic restart, but that's not the point...
3) now I run `mvn spring-boot:run` - after a little work, it ends with the word "Killed" in stdout.

During normal work with Linux, I have never noticed such anomalies, and even in such quantity. Has anyone come across?

Answer 1

My guess is that you need to learn how to use systemd

Answer 2

Surely an OOM killer is coming to you. As always - look at the logs.

Answer 3

you ran out of memory and the Linux system killer kills the process so that the system can live
somehow you surprisingly run java applications at 512
mb