capistrano3を軽くいじったメモ

インストール

capistranoをインストールする。

cat Gemfile
source 'http://rubygems.org'

gem 'capistrano'

bundle install

pathは好みでいれてください。

bundle install --path vendor/bundle

capの初期インストール

bundle exec cap install

mkdir -p config/deploy
create config/deploy.rb
create config/deploy/staging.rb
create config/deploy/production.rb
mkdir -p lib/capistrano/tasks
Capified

出来た

タスク内容を見る

cap -vT

コマンド	説明
cap deploy	# Deploy a new release
cap deploy:check	# Check required files and directories exist
cap deploy:check:directories	# Check shared and release directories exist
cap deploy:check:linked_dirs	# Check directories to be linked exist in shared
cap deploy:check:linked_files	# Check files to be linked exist in shared
cap deploy:check:make_linked_dirs	# Check directories of files to be linked exist in shared
cap deploy:cleanup	# Clean up old releases
cap deploy:cleanup_rollback	# Remove and archive rolled-back release
cap deploy:finished	# Finished
cap deploy:finishing	# Finish the deployment, clean up server(s)
cap deploy:finishing_rollback	# Finish the rollback, clean up server(s)
cap deploy:log_revision	# Log details of the deploy
cap deploy:published	# Published
cap deploy:publishing	# Publish the release
cap deploy:revert_release	# Revert to previous release timestamp
cap deploy:reverted	# Reverted
cap deploy:reverting	# Revert server(s) to previous release
cap deploy:rollback	# Rollback to previous release
cap deploy:started	# Started
cap deploy:starting	# Start a deployment, make sure server(s) ready
cap deploy:symlink:linked_dirs	# Symlink linked directories
cap deploy:symlink:linked_files	# Symlink linked files
cap deploy:symlink:release	# Symlink release to current
cap deploy:symlink:shared	# Symlink files and directories from shared to release
cap deploy:updated	# Updated
cap deploy:updating	# Update server(s) by setting up a new release
cap install	# Install Capistrano, cap install STAGES=staging,production

タスクの追加

タスクを追加したい場合のオペレーション。
今回はhostnameコマンドを実行するタスクを追加。

cat lib/capistrano/tasks/hostname.cap
namespace :hostname do

  desc "Get Servername"
  task :get => :environment do
    on roles(:app) do
      execute :hostname, "-s"
    end
  end

end

タスク登録の確認

hostnameのnamespaceがあることを確認します。

cap -vT|fgrep hostname
cap hostname:get                   # Get Servername

ステージの追加

以下が実行出来るようにします。

• production
• staging

上記がデフォルトで設定されているので、developmentを追加します。

bundle exec cap development deploy --dry-run

** Invoke ensure_stage (first_time)
** Execute (dry run) ensure_stage
cap aborted!
Don't know how to build task 'development'
/home/user/hoge/cap/bundle/ruby/1.9.1/gems/capistrano-3.1.0/lib/capistrano/application.rb:15:in `run'
/home/user/hoge/cap/bundle/ruby/1.9.1/gems/capistrano-3.1.0/bin/cap:3:in `<top (required)>'
/home/user/hoge/cap/bundle/ruby/1.9.1/bin/cap:23:in `load'
/home/user/hoge/cap/bundle/ruby/1.9.1/bin/cap:23:in `<main>'
(See full trace by running task with --trace)

環境が無いことを確認。

development環境用のファイルを追加

cp config/deploy/staging.rb config/deploy/development.rb

development環境で実行する。

bundle exec cap development deploy --dry-run
** Invoke development (first_time)
** Execute (dry run) development
** Invoke deploy (first_time)
** Execute (dry run) deploy