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Editorial Team
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Asked: 2026-05-31T18:49:18+00:00

Finally deployed my ruby on rails 3.2 app but when trying to open it

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Finally deployed my ruby on rails 3.2 app but when trying to open it from the browser I’m getting a 500 error (production.log gives)

Errno::ENOENT (No such file or directory - Problem opening database)
  • installed rvm rails 3.2 ruby latest
  • working cap deploy with nginx and unicorn
  • rake db:migrate RAILS_ENV=production in production terminal => no errors

My production database.yml ( both tried with and without path to mysql socket, mysqld running fine mysql from terminal i can connect and see all tables in db )

production:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: paintings_production
  pool: 5
  username: paintings
  password: mypass
  socket: /var/lib/mysql/mysql.sock
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  1. Editorial Team

    Since you’ve confimed your socket file exists:

    /var/lib/mysql/mysql.sock

    …but the error message says no such file or directory, you have a permissions problem.

    Or perhaps your mysql server isn’t configured to use the same socket correctly?

    You can find a full mysql/rails unix socket debugging info here: Ruby on Rails 3 Can't connect to local MySQL server through socket '/tmp/mysql.sock' on OSX

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