Capistrano 3 sudo task

ruby-on-rails capistrano capistrano3
crimi picture crimi · Nov 13, 2013 · Viewed 26.1k times · Source

I want to write a recipe with Capistrano 3 executing a task on the remote server with sudo.

With Capistrano 2 this could be done for example:

default_run_options[:pty] = true

task :hello do
  run "#{sudo} cp ~/something /something"
end

With Capistrano 3 I found:

set :pty, true

But I could not get to execute a task running with sudo.

How can I run a task with sudo?

Answer

Ian picture Ian · Nov 19, 2013

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

Related questions

Capistrano and environment variables

I've switched to using environment variables for configuration and it works very well - except when I have to deploy or run tasks with capistrano. Capistrano 3 seems to execute each command prefixed with /usr/bin/env which erases any environment …

Read More
Capistrano 3 execute within a directory

I'm trying to write a task for Capistrano 3 that involves executing 'composer install' within the directory of the current release. It looks something like this: namespace :composer do desc 'Install dependencies with Composer' task :install do on roles(:web) do …

Read More
Rails: An unhandled lowlevel error occurred. The application logs may have details

I made this on my server: deploy@ubuntu-512mb-ams2-01:~/applications/spa_backend/current$ bundle exec rake secret 4b921910** deploy@ubuntu-512mb-ams2-01:~/applications/spa_backend/current$ export SECRET_KEY_BASE=4b921910** deploy@ubuntu-512mb-ams2-01:~/applications/spa_backend/current$ …

Read More