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Deploying Rails apps with Capistrano
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Bruno Sutic
October 01, 2014
Technology
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Deploying Rails apps with Capistrano
Bruno Sutic
October 01, 2014
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Transcript
Deploying Rails apps with Capistrano +
About: Bruno Sutic, github.com/bruno-/ Rails & Javascript developer Ideal Project
Group, Chicago Worked on a Capistrano plugins: github.com/capistrano-plugins/
Goals • motivate Rails devs to try Capistrano • make
Capistrano vs Heroku comparison • demo app deployment
What is Capistrano? • Capistrano is a deployment tool. It
gets the app running on the server. • Other deployment strategies: - manual (zip + ftp) - Mina - Heroku - Engine Yard - Docker - Chef, Puppet…
Heroku PROS • Free! • Really simple • Single click
add-ons CONS • Paid plans are expensive • Closed (and expensive) add-on ecosystem • Technical lock-in
Heroku is great, but expensive. Capistrano is the alternative.
What is Capistrano? • Ruby gem • built on top
of ssh and Rake (think tasks) • mature and battle tested v1.1.0 in March 2006 • scalable • technology agnostic: used for deploying apps in Ruby, PHP + other
What Capistrano is *not*? • server installation / provisioning tool
think: `apt-get install nginx` • server configuration tool think: updating IPtables • Chef, Puppet, Ansible are better for these tasks
How does it work? • built on top of `ssh`
$ ssh my_server “echo ‘foo’” $ scp some_file.txt my_server:/dir/
How does it work? $ ssh my_server “git clone github.com/myapp”
$ ssh my_server “service nginx restart” 2) git clone myapp 1) ssh my_server Dev machine Server Git repo (Github)
Capistrano downsides • more work (than i.e. Heroku) • requires
learning • capistrano itself • dev ops: server installation, configuration, hardening • familiarity with ssh
Quiz
Capistrano vs Heroku quiz Situation: • Ruby on Rails beginner
• Created first app for practice How do you deploy?
Capistrano vs Heroku quiz Situation: • Rails dev team •
Long term customer • Big app, will need scaling How do you deploy?
Capistrano vs Heroku quiz Situation: • Experienced Rails dev •
Small app built over the weekend How do you deploy? Both are fine! (it depends )
Demo time
Capistrano demo STEPS 1. make a Rails app ✅ 2.
buy & setup a server ✅ 3. setup Capistrano 4. deploy STACK • Nginx • Unicorn • PostgreSQL
Next steps • www.capistranorb.com • capistrano github • https://gist.github.com/bruno-/9808201