Site Returning503Errors

If you are getting 503 errors when you visit your site, the most likely cause is that your mongrel cluster isn’t running.

You can start the cluster via Capistrano using cap app:start or on your server using mongrel_rails cluster::start -C /etc/mongrel_cluster/your_app.conf.

If your application is still not available, check RAILS_ROOT/log/mongrel.log for missing Ruby gems or other problems that would prevent Mongrel from starting. You should also check your production.log to see if there is anything there that might point you in the right direction.