Introducing DigitalOcean Functions: A powerful, serverless compute solution

Question

How to downgrade Rails from 2.0.0 to 1.9.3 and update Unicorn config?

  • Posted June 17, 2014

Hi. Currently the droplet started with application rails image has ruby 2.0.0 and rails 4. I’m trying to downgrade but haven’t been able to do so. Basically my steps were:

  • rvm install 1.9.3
  • set 1.9.3 as default with rvm
  • updated GEM_PATH, GEM_HOME and DAEMON paths in /etc/init.d/unicorn as following:

export GEM_HOME=/usr/local/rvm/gems/ruby-1.9.3-p547 export GEM_PATH=/usr/local/rvm/gems/ruby-1.9.3-p547:/usr/local/rvm/gems/ruby-1.9.3-p547@global DAEMON=/usr/local/rvm/gems/ruby-1.9.3-p547/bin/unicorn

Error I get:

  1. /usr/bin/env: ruby_executable_hooks: No such file or directory
  2. I was also getting something like "unable to stat … "
Subscribe
Share
Submit an answer
You can type!ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Andrew SB • June 17, 2014

After you install 1.9.3, make sure you also install the necessary gems that we installed system wide for 2.0.0. Use rvm to switch back to 2.0.0 and run <code>gem list</code> to see the full list of gems that were installed system wide for the default install. The key one is of course unicorn.

Also make sure you update the value for <code>PATH</code> in the unicorn configuration file at <code>/etc/default/unicorn</code>