You can run but you can’t hide.
KeepRunning restarts a Ruby script whenever it stops, crashes or is killed.
There’s two modes to use KeepRunning: Using the
keep_running bin with a config file (see example_runner_conf) or using a KeepRunning script (see example_runner_script). The only difference is a shebang line and a require line in the KeepRunning script. (Actually the script could as well being used as configuration file; This isn’t true the other way round)
The invokation would look like this:
keep_running example_runner_conf one two three
./example_runner_script one two three
All further arguments will be passed to the process to be run. For the process running
$0 will be it’s own path. So basically if your Ruby script works on it’s own, it’s scriptname
$0 and command line arguments
ARGV will be the same when launched by KeepRunning.
A runner config would look like this:
KeepRunning.run do pidfile '/tmp/keep_running_example' email to: 'firstname.lastname@example.org', from: 'email@example.com', via: :sendmail restart_threshold 6 restart_delay 60 process 'example_script.rb' end
restart_threshold defines how many seconds must be between restarts until a delay of
restart_delay seconds is kicking in.
This is a quick and dirty hack. Specs will follow soon.