How do I configure Rails for password-less access to remote database

Question

Note: this is similar to Use Ruby on Rails and SSH to access remote MySQL database on remote server, but the OP didn\'t provide much info, and the only answer given does

Answer 1

There is also a pure rails solution

add the following to your Gemfile

 gem 'net-ssh-gateway'

then create a class

module RemoteConnectionManager
  SSH_USER = 'YOUR_SSH_USER'

  def self.port_through_tunnel(remote_host, port, local_port: nil, db_host:'localhost')
    return Net::SSH::Gateway.new(remote_host, SSH_USER)
      .open(db_host,port,local_port)
  end
end

last change your database.yml

  adapter: mysql2
    host: 127.0.0.1
    port:  <%= RemoteConnectionManager.port_through_tunnel('your_ssh_host', 3306, db_host: 'your_db_host_eg_some_aws_rds_db' ) %>
    username: your_db_username
    password: your_db_password
    database: your_db_name

if local_port is nil Net/ssh will pick a free one