Simple process monitor -
Used to check if a process is running - if it insn't execute some ruby code
see ./bin/hamster –help for all the arguments that it takes
hamster –callback “%x”Rails is Dead“ | mail -s rails_is_dead email@example.com” –watch 'Rails:' –callback-message 'emailing you some fyi' –delay 1
Put this in a cronjob to run every minute and you have a very simple, robust way to detect missing jobs This is not a replacement for more robust excellent froody things like Daemontools - but it is a simple way to make sure a important background job is running in userland - without muking about with root
Copyright © 2011 Curtis Schofield. See LICENSE for details.