How to supervise sidekiq and rails server processes?

Question

What is the best way to manage multiple interconnected services for a web applications like:

• rails server / unicorn / puma
• redis / sidekiq / resque

So that, if one is stopped or started, others get stopped/started too.

Answer 1

Usually a monitoring tool is used for this purpose. One such good tool is God.

The basic idea is to run God as a system service, and configure your sidekiq to be watched by God. When your server restarts, God runs as a service and it will start your sidekiq workers.

You have more benefits by using God, to name just a few:

• notifications: you can configure it to send you notifications when your sidekiq worker dies and gets restarted.
• resource monitoring: you can configure it to take actions based on predefined rules. For example, restart the job when it consumes too much memory.

Update: just read an article this morning which might be very helpful: Create, run and manage your Ruby background processes with upstart.