Monit and Thin and Unfound Gems

Posted by TenJack on Server Fault See other posts from Server Fault or by TenJack
Published on 2012-09-01T00:03:57Z Indexed on 2012/09/01 3:40 UTC
Read the original article Hit count: 550

Filed under:

ruby-on-rails

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ruby

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monit

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gem

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thin

I've been using Monit to monitor my Thin server and everything was working until I upgraded my Rails version from 2.3.4 to 2.3.14. Now when I try and start Thin using monit it gives me an unfound gem error:

Missing the Rails 2.3.14 gem. Please `gem install -v=2.3.14 rails`

I thought this may be a GEM PATH issue and also tried setting the GEM_HOME and PATH variables in the start command:

check process thin3001
  with pidfile /home/blahblah/apps/Vocab/shared/pids/thin.3001.pid
  start program = "/usr/bin/env PATH=/usr/lib/ruby/gems/1.8/gems GEM_HOME=/usr/lib/ruby/gems/1.8/gems /usr/bin/ruby /usr/bin/thin -C /etc/thin/vocab.yml start -o 3001"
  stop program = "/usr/bin/ruby /usr/bin/thin -C /etc/thin/vocab.yml stop -o 3001"
  if totalmem > 150.0 MB for 5 cycles then restart
group thin

It's strange because if I run the start command in the console it works fine, it's only within monit that I get the missing Gems error.

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