If you get this error:
- rake db:migrate RAILS_ENV="staging"
- getaddrinfo: Name or service not known
Add host: 127.0.0.1 in your database.yml as shown below:
- staging:
- adapter: mysql
- encoding: utf8
- database: staging
- username: root
- password:
- pool: 5
- socket: '/var/lib/mysql/mysql.sock'
- host: 127.0.0.1
