Question

I am running rake db:setup on my server, and I am getting:

Can't connect to local MySQL server through socket '/tmp/mysql.sock'

(I added RAILS_ENV=production)

This is on a ubuntu, nginx, passenger, mysql setup.

Answer 1

Either MySQL isn’t running, or it’s not configured to put the sock-file in the right place. Run something like ps aux | grep mysql to check if it’s running. If it’s running and the error persists, check if the file /tmp/mysql.sock exists. You can configure it in /etc/mysql/my.cnf

On my ubuntu machine its configured to /var/run/mysqld/mysqld.sock. Either change your mysql settings, or change config/database.yml in your Rails app.