linux - Execute a sudo command in Ruby on Rails app

Question

I am trying to execute a command like this from a Ruby on Rails app:

sudo service squid3 restart

If i try it with this code:

output = ′sudo service squid3 retsart′

It don't work, in the console i see that linux asks the password. How can i pass a password with this command? Or other suggestions...

Answer 1

You can add the following line to your sudoers file (/etc/sudoers)

rails_user ALL=(root) NOPASSWD:/usr/sbin/service

This will basically let the rails_user user execute the service command as sudo, and the system won't ask you for a password.

rails_user should be replaced with whatever user that you are running your rails process under. And you should also make sure that

Defaults requiretty

is not present in your /etc/sudoers. If not you won't be able use sudo from a script.