How to enter rails console on production via capistrano?

Question

I want to enter the rails console on production server from my local machine via capistrano. I found some gists, e.g. https://gist.github.com/813291 and when I enter console via

Answer 1

For Capistrano 3 you can add these lines in your config/deploy:

namespace :rails do
  desc 'Open a rails console `cap [staging] rails:console [server_index default: 0]`'
  task :console do    
    server = roles(:app)[ARGV[2].to_i]

    puts "Opening a console on: #{server.hostname}...."

    cmd = "ssh #{server.user}@#{server.hostname} -t 'cd #{fetch(:deploy_to)}/current && RAILS_ENV=#{fetch(:rails_env)} bundle exec rails console'"

    puts cmd

    exec cmd
  end
end

To open the first server in the servers list:

cap [staging] rails:console 

To open the second server in the servers list:

cap [staging] rails:console 1 

Reference: Opening a Rails console with Capistrano 3

exec is needed to replace the current process, otherwise you will not be able to interact with the rails console.