First set up your application in an rvm gemset:
rvm 1.9.3@my_app --create
Make sure you have puma installed in that gemset. You may also want to add it to your Gemfile, but that step is not required:
gem install puma
in your Gemfile.
Next you'll have to create an rvm wrapper for your puma executable so the correct gemset gets loaded from launchd:
rvm wrapper 1.9.3@my_app my_app puma
This will generate a myapppuma executable in /Users/your_username/.rvm/bin/expenses_puma.
Now you have to set up your Launch Agent in ~/Library/LaunchAgents/com.aname.myapp.plist. You have to add the following to that file:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>Label</key> <string>com.a_name.my_app</string> <key>ProgramArguments</key> <array> <string>/Users/your_username/.rvm/bin/my_app_puma</string> <string>-p9999</string> <string>/Users/your_username/apps/my_app/config.ru</string> </array> <key>RunAtLoad</key> <true/> <key>KeepAlive</key> <true/> <key>StandardErrorPath</key> <string>log/error.log</string> <key>StandardOutPath</key> <string>log/access.log</string> <key>WorkingDirectory</key> <string>/Users/your_username/apps/my_app</string> </dict> </plist>
Now you'll have to load your Launch Agent by running the following command in your Terminal:
launchctl load -w ~/Library/LaunchAgents/com.jeroen.expenses.plist
You may set a port or pass any other configuration option in the ProgramArguments array.