How do I guarantee that I have a process always up and running?

Question

Is it more reliable to use daemontools or supervisord, or that I use crontab that runs a script of mine to keep checking if the process still exists and if not, start it again?

What is the best way to guarantee for sure that a process is always running, and running in a healthy condition? (i.e., it isn't running but stalled in some error, where it should be killed and started again).

Btw, this is a Java process that I start like java -jar app.jar.

Thanks!

First, invest in UPS hardware... ;-) – Toby Speight Mar 10 '17 at 15:31 — Toby Speight, Mar 10 '17 at 15:31

score 1 · Answer 1 · answered Mar 10 '17 at 12:46

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We use monit for such tasks. It could run process if it is in down state

answered Mar 10 '17 at 12:46

Yuriy Zhigulskiy

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score 1 · Answer 2 · answered Mar 10 '17 at 12:48

Personally, I use supervisord for my servers. It's really easy to configure and understand, and it can be configured to automatically re-run a failing process several times.

You should probably start by reading the oficial docs, specifically, this section to set up start retries.

How do I guarantee that I have a process always up and running?

2 Answers2