Rails 4.1.0 - Nginx Bad Gateway with Passenger
I’m writing a little issue tracking application, and as it’s a new app I’m using the new shiny Rails 4.1.0. However, whilst the application runs fine locally using Webrick I’ve been unable to get it working when deployed onto a live (staging) environment running Passenger and Nginx (using the Ubuntu package available via the Phusion Passenger site).
When deployed and configured, Nginx reports a 502 Bad Gateway exception. Digging throught the Nginx error log (in
/var/log/nginx), the error becomes clear:
Exception RuntimeError in Rack application object (Missing
secret_key_base for ‘production’ environment, set this value in
Opening secrets.yml shows that there is no value for production:
You can either set an environment variable, or directly configure a value here (you can run
rake secret to generate a key). Just make sure that if you do the latter, you’ve added secrets/yml to your .gitignore!