stupid_simple_monit.rb

A really stupidly simple process monitoring script.

Don't use this if you have real process monitoring needs, such as god or monit!

The genesis of this was a project that included sidekiq where the sidekiq process was stopping for some reason, and monit was not catching the shutdown and respawning it, and offering no indication why. As a stop-gap, we hacked this little ditty up. One of us had a bit of free time, so we played Keith Richards and took the original hack and minimized it to it's essence.

Add this line to your application's Gemfile:

gem 'stupid-simple-monit'

And then execute:

$ bundle

Or install it yourself as:

$ gem install stupid-simple-monit

Create a configuration file that contains the info needed to find the PID of your running process, and a shell command to respawn the process:

pidfile: path/to/pidfile
start_script: "shell command to respawn your process"

The command is pretty simple:

$ stupid_simple_monit.rb [CONFIG_FILE]

If you omit CONFIG_FILE it defaults to ./config.yml.

Ideally, put this into a crontab to run, say, every 5 or 10 minutes. (Again that caveat if you need something real, use god or monit.)

1. Fork it ( https://github.com/tamouse/stupid-simple-monit/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request