"Incomplete response received from application" from nginx / passenger

Your rails_env production don't have required set up,probably missing secret_key_base.

Open /etc/nginx/sites-available/default and change the rails_env to development:

rails_env production;        torails_env development;

If the app is loading it's not a passenger issue.

Production Solution:

Restart the passenger app :

touch /yourapp/tmp/restart.txt

ruby-on-rails nginx passenger

This error occurs because you didn't set the secret_key_base. Follow these steps to fix it:

Go to your rails app directory

cd /path/rails-app

Generate secret key base

rake secret RAILS_ENV=production

Set environment variable

SECRET_KEY_BASE=<the-secret-key-base>

Restart the Rails app

touch /path/rails-app/tmp/restart.txt

ruby-on-rails nginx passenger

I had this problem over the weekend (it turned out there was an incompatibility between my versions of passenger and ruby).

However, nobody seems to be mentioning: the actual error might appear in /var/log/apache2/errors.log, not in any custom log.

Once you know that, hopefully your search will be easier!

Update, since I needed to refer back to this again - this hold true for nginx too - /var/log/nginx/error.log is your friend in that case!

CodeHunter