Hamster

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

Example

hamster –callback “%x”Rails is Dead“ | mail -s rails_is_dead [email protected]” –watch ‘Rails:’ –callback-message ‘emailing you some fyi’ –delay 1

samples.

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

Hamster

Example

Fin