Painless deployment with Capistrano http://slides.kugaevsky.ru/deploy-with-capistrano.html

1. ВЫКЛАДКА
БЕЗ БОЛИ С
CAPISTRANO
PAINLESS DEPLOYMENT WITH CAPISTRANO
Николай Кугаевский / @kugaevsky

2. TRUE OLD SCHOOL
Rsync
SCP
FTP

3. NOT SO OLD
ssh → git pull
Fabric

4. MONSTAZ!
Puppet
Chef
Salt
Ansible

5. CAPISTRANO TO THE RESCUE

6. CAPISTRANO
Capistrano is a remote server automation and deployment tool
written in Ruby.
It supports the scripting and execution of arbitrary tasks, and
includes a set of sane-default deployment workflows.

7. CAPISTRANO
Ruby
Open source
Expressive DSL
Simity
0-time deploy/rollback
Multistaging
Roles

8. INSTALL AND INIT
$ cd my_perfect_app
$ gem install capistrano
$ cap install

9. CONFIG
# config/deploy.rb
set :application, 'slides'
set :repo_url, 'git@github.com:kugaevsky/slides.git'
# config/deploy/staging.rb
role :app, %w{nick@kugaevsky.ru}
set :deploy_to, '/home/kugaevsky/www/slides.kugaevsky.ru'
set :user, 'nick'

10. ANATOMY LOCAL
my_perfect_app
├── Capfile
├── config
│ ├── deploy
│ │ ├── production.rb
│ │ ├── staging.rb
│ │ └── ...
│ └── deploy.rb
└── lib
└── capistrano
└── tasks

11. ANATOMY HOST
my_perfect_app
├── current → ../releases/20141209222103
├── releases
│ ├── 20141209220703
│ ├── 20141209222103
│ └── ...
├── repo
│ ├── branches
│ ├── config
│ ├── description
│ └── ...
└── shared
├── node_modules
├── uploads
├── vendor
└── ...

12. DEPLOY FLOW
deploy:starting # start a deployment, make sure everything is ready
deploy:started # started hook (for custom tasks)
deploy:updating # update server(s) with a new release
deploy:updated # updated hook
deploy:publishing # publish the new release
deploy:published # published hook
deploy:finishing # finish the deployment, clean up everything
deploy:finished # finished hook

13. ROLLBACK FLOW
deploy:starting
deploy:started
deploy:reverting # revert server(s) to previous release
deploy:reverted # reverted hook
deploy:publishing
deploy:published
deploy:finishing_rollback # finish the rollback, clean up everything
deploy:finished

14. PLUGINS!
# Capfile
require 'capistrano/rvm'
require 'capistrano/rbenv'
require 'capistrano/chruby'
require 'capistrano/bundler'
require 'capistrano/rails/assets'
require 'capistrano/rails/migrations'

15. REAL WORLD EXAMPLE
# config/deploy.rb
desc 'Create symlinks for npm modules'
task :npm do
on roles(:app) do
execute "ln -nfs #{shared_path}/node_modules #{release_path}/node_modules"
end
end
desc 'Install npm modules'
task :npm do
on roles(:app) do
execute "cd #{release_path} && npm install"
end
end
desc 'Compile assets'
task :compile_assets do
on roles(:app) do
execute "cd #{release_path} && #{shared_path}/node_modules/.bin/gulp compile:production"
end
end

17. ALTERNATIVES
Vlad the Deployer
Mina

18. READING
Capistrano official site
Repository on GitHub
How To Use Capistrano to Automate Deployments

19. СПАСИБО
ВЫКЛАДКА БЕЗ БОЛИ С CAPISTRANO
PAINLESS DEPLOYMENT WITH CAPISTRANO
http://slides.kugaevsky.ru/
для
Николай Кугаевский rannts#3