Capistrano 3 sudo task

The Capistrano 3 guide recommends the use of passwordless sudo. This allows your less-priveleged user execute the sudo command without having to enter a password via the PTY.

You can use the task that Kentaro wrote above, and add something like the following to your /etc/sudoers file:

deploy ALL=NOPASSWD:/bin/cp ~/something /something

http://www.capistranorb.com/documentation/getting-started/authentication-and-authorisation/#toc_8

I usually write like this:

task :hello do  on roles(:all) do |host|    execute :sudo, :cp, '~/something', '/something'  endend

Edit

Capistrano 3 does not support sudo with password.

However, I created a small gem, which enables you to use sudo with password in Capistrano 3 task.

Add sshkit-sudo to your application's Gemfile:

# Gemfilegem 'sshkit-sudo'

And require 'sshkit/sudo' in you Capfile:

# Capfilerequire 'sshkit/sudo'

Now, you can execute a command with sudo as follows:

task :hello do  on roles(:all) do    sudo :cp, '~/something', '/something'  endend

To resolve this issue I needed to add set :pty, true to my deploy.rb file.

I can now run the following:

# config valid only for Capistrano 3.1lock '3.1.0'set :application, 'APP_NAME'set :pty, trueset :ssh_options, {:forward_agent => true}namespace :deploy do  desc 'Restart NGINX'  task :restart do    on roles(:app), in: :sequence, wait: 1 do       execute :sudo, "./restart.sh"    end  endend

This task basically runs a shell script called restart.sh that has a command within sudo service nginx restart.