How do I run a rake task from Capistrano?

Question

I already have a deploy.rb that can deploy my app on my production server.

My app contains a custom rake task (a .rake file in the lib/tasks directory).

I\

Answer 1

Previous answers didn't help me and i found this: From http://kenglish.co/run-rake-tasks-on-the-server-with-capistrano-3-and-rbenv/

namespace :deploy do
  # ....
  # @example
  #   bundle exec cap uat deploy:invoke task=users:update_defaults
  desc 'Invoke rake task on the server'
  task :invoke do
    fail 'no task provided' unless ENV['task']

    on roles(:app) do
      within release_path do
        with rails_env: fetch(:rails_env) do
          execute :rake, ENV['task']
        end
      end
    end
  end

end

to run your task use

bundle exec cap uat deploy:invoke task=users:update_defaults

Maybe it will be useful for someone