Capistrano

TODO

Installation

Add this line to your application's Gemfile:

gem 'capistrano', github: 'capistrano/capistrano', branch: :v3

And then execute:

$ bundle --binstubs

Capify:

$ cap install

This creates the following files:

• Capfile
• lib/deploy/tasks
• config/deploy/staging.rb
• config/deploy/production.rb

To create different stages:

$ cap install STAGES=local,sandbox,qa,production

Usage

$ cap -vT

$ cap staging deploy
$ cap production deploy

$ cap production deploy --dry-run
$ cap production deploy --prereqs
$ cap production deploy --trace

Configuration

# config/deploy.rb
set :application, 'example app'

# config/deploy/production.rb
set :stage, :production

ask :branch, :master

role :app, %w{example.com example2.com}
role :web, %w{example.com}
role :db, %w{example.com}

# the first server in the array is considered primary

Tasks

Before / After

Where calling on the same task name, executed in order of inclusion

# call an existing task
before :starting, :ensure_user

after :finishing, :notify


# or define in block
before :starting, :ensure_user do
  #
end

after :finishing, :notify do
  #
end

Console

Execute arbitrary remote commands

$ cap staging console

Configuration

SSHKit