Capistrano重新启动Apache服务器

Question

I'm having an issue with Capistrano and my rails application. I have a simple rake task for my deployment:

 task :restart do
    on roles(:app), in: :sequence, wait: 5 do
      execute "cd #{current_path}; rake assets:precompile"
      execute "sudo service httpd restart"
    end
  end

As you can see, after all the code is uploaded I precompile my assets and attempt to restart my server. For some reason this used to work fine, but now gives me as error:

DEBUG [e2f1f3dc] Command: sudo service httpd restart
DEBUG [e2f1f3dc]    sudo
DEBUG [e2f1f3dc]    : 
DEBUG [e2f1f3dc]    sorry, you must have a tty to run sudo

Any ideas how I could resolve this?

EDIT: Just in case you were wondering, the user that capistrano is logged in as is "ec2-user" with all the defaults that amazon assigns it with.

Answer 1

ssh to the server and then issue this command:

visudo

Then comment out the following line:

#Default requiretty

A better solution in case multiple users login to the system (bad idea, deployment systems should be managed by programs) is to disable TTY for a particular user like this:

Defaults requiretty
Defaults:%build !requiretty
Defaults:build !requiretty

The first line makes TTY mandatory for everyone. The second and third line exclude the build group and user from this requirement respectively.