Mina Example Script using Roles (in whenever) as used in Capistrano

commands

# Custom file for whenever.rb with roles, https://gist.github.com/priyank-gupta/e15b5dab570e54cde2ee

# to deploy on staging_1
mina deploy on=staging_1

# to update whenever on staging_2
mina whenever:update on=staging_2

# to restart delayed_job on staging_2
mina delayed_job:restart on=staging_2

deploy.rb

# config/deploy.rb
# custom file for whenever.rb with roles, https://gist.github.com/priyank-gupta/e15b5dab570e54cde2ee

require 'mina/multistage'
require 'mina/bundler'
require 'mina/rails'
require 'mina/git'
require 'yaml'
# require custom file for whenever.rb with roles, https://gist.github.com/priyank-gupta/e15b5dab570e54cde2ee
require_relative '../lib/mina/whenever'

desc 'Default Setup.'
task :defaults do
  set_default :term_mode,       :pretty
  set_default :rails_env,       'staging'
  set_default :branch,          'master'
end

set :shared_paths,    ['log', 'config/secrets.yml', 'config/aws.yml', 'config/database.yml', 'tmp', 'public/assets']
set :asset_paths,     ['vendor/assets/', 'app/assets/', 'app/assets/fonts/']

set :default_server,     :staging
set :server, ENV['on'] || default_server
invoke :"env:#{server}"
set :app_path, lambda { "#{deploy_to}/#{current_path}" }

# custom setup task
task :setup => :environment do
  queue! %[mkdir -p "#{deploy_to}/#{shared_path}/log"]
  queue! %[chmod g+rx,u+rwx "#{deploy_to}/#{shared_path}/log"]

  queue! %[mkdir -p "#{deploy_to}/#{shared_path}/config"]
  queue! %[chmod g+rx,u+rwx "#{deploy_to}/#{shared_path}/config"]

  queue! %[mkdir -p "#{deploy_to}/#{shared_path}/tmp"]
  queue! %[chmod g+rx,u+rwx "#{deploy_to}/#{shared_path}/tmp"]

  queue! %[mkdir -p "#{deploy_to}/#{shared_path}/public/assets"]
  queue! %[chmod g+rx,u+rwx "#{deploy_to}/#{shared_path}/public/assets"]

  queue! %[touch "#{deploy_to}/#{shared_path}/config/database.yml"]
  queue  %[echo "-----> Be sure to edit '#{deploy_to}/#{shared_path}/config/database.yml'."]
end

# custom deploy task
desc "Deploys the current version to the server."
task :deploy => :environment do
  deploy do
    to :prepare do
    end

    invoke :'git:clone'
    invoke :'deploy:link_shared_paths'
    invoke :'bundle:install'
    invoke :'rails:db_migrate'
    invoke :'deploy:cleanup'

    to :launch do
      queue "mkdir -p #{app_path}/tmp/"
      invoke :'nginx:restart'
      invoke :'whenever:update'
      if role?(:admin) || role?(:staging)
        invoke :'delayed_job:restart'
      end
    end
  end
end

# Custom nginx tasks
# Module for the same is also available, mina-nginx
namespace :nginx do
  %w(stop start restart reload status).each do |action|
    desc "#{action.capitalize} Nginx"
    task action.to_sym do
      queue %{echo "-----> #{action.capitalize} Nginx"}
      set :term_mode, :system
      queue "sudo service nginx #{action}"
    end
  end
end

# Custom Delayed Job tasks
# Module is also available
namespace :delayed_job do
  %w(stop start restart).each do |action|
    desc "#{action.capitalize} Delayed Job"
    task action.to_sym do
      queue %{echo "-----> #{action.capitalize} Delayed Job"}
      queue "cd #{app_path} ; RAILS_ENV=#{rails_env} ./bin/delayed_job #{action}"
    end
  end
end

def role?(role)
  roles.include?(role)
end

staging.rb

# config/deploy/staging.rb
# custom file for whenever.rb with roles, https://gist.github.com/priyank-gupta/e15b5dab570e54cde2ee

namespace :env do
  task :staging_1 => [:environment] do
    set :domain,              'x.x.x.x' # staging IP
    set :deploy_to,           '/path/to/your_site'
    set :user,                'deploy'
    set :deploy_server,       'staging_1'                   # just a handy name of the server
    set :rails_env,           'staging'
    set :branch,              'master'
    set :repository,          'git@github.com:your_repo/your_repo.git'
    set :roles,               ->{ [:app, :db, :staging] }    # to be used in whenever script
    invoke :defaults                                         # load rest of the config
  end
end

namespace :env do
  task :staging_2 => [:environment] do
    set :domain,              'x.x.x.x' # staging2
    set :deploy_to,           '/path/to/your_site'
    set :user,                'deploy'
    set :deploy_server,       'staging_2'                   # just a handy name of the server
    set :rails_env,           'staging'
    set :branch,              'master_2'
    set :repository,          'git@github.com:your_repo/your_repo.git'
    invoke :defaults                                         # load rest of the config
  end
end