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RailsCasts Episode #377: Trinidad

http://railscasts.com/episodes/377-trinidad

Requires Ruby 1.9.2 or higher.

Commands used in this episode

ssh root@198.58.96.26
adduser deployer
echo "deployer ALL=(ALL:ALL) ALL" >> /etc/sudoers
exit
ssh-copy-id deployer@198.58.96.26
cap deploy:install
cap deploy:setup
cap deploy:cold
bundle exec rails s trinidad -e production
cap nginx:setup
cap trinidad:setup
touch tmp/restart.txt
cap deploy trinidad:restart

Gotchas

  • Highline Version: If you are using JRuby 1.7 and receiving the exception NameError: cannot load Java class jline.ConsoleReader while running Capistrano commands then try running bundle update highline. This was fixed in Highline version to 1.6.14. See this issue for details.

  • SSH Agent Forwarding: If Capistrano hangs while deploying, check to see if the ssh_options[:forward_agent] = true is in the Capistrano config. This may not work as discussed here. Here are some solutions.

    • Authorize the server directly by generating an SSH key and setting it up as the deploy key.

    • Consider running Capistrano commands from Ruby MRI on your local.

    • Use an alternative deployment method such as "copy"

    • Try upgrading to JRuby 7 on your local machine, this has been reported to solve the issue but I have not tested it.

  • Not Reloading: I experienced an issue where running touch tmp/restart.txt on the server would not use the latest code. Unfortunately I was unable to reproduce this problem consistently enough to resolve it. If you experience this, please comment on this issue.