Capistrano for non-rubyist
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Capistrano is a tool for automating deployment of web applications. It connects to servers over SSH and runs tasks like code deployment, database migrations, and asset precompilation. It uses a Ruby DSL to define tasks and roles for different servers. Capistrano comes with default tasks but can also be customized. It is commonly used for deploying Ruby on Rails apps but works with other stacks as well. The Capistrano gem generates files needed to get started, and tasks can be tailored for specific apps or server environments.
Capistrano for non-rubyist
- 2. who we are Dimitris Tsironis Founder at Geembo, UI designer & huge geek, who loves good design and french fries, as much as good indentation in a stylesheet. Follow him @tsironakos and @geemboHQ Dr. John Pagonis Dr. John Pagonis is onto something with Missum these days. You can follow him at @JohnPagonis and @MissumApp
- 3. WHAT’S THE PROBLEM? deploys can be a real mess mistakes could happen very easily you don’t mess with the production you’re actually delaying bug fixes, new features etc.
- 4. one-click deploys! (well, almost)
- 5. is a language agnostic tool for remote application administration tasks provisioning of infrastructure better handled with other tools, eg. Chef, Puppet, Babushka it fits well with deploying web-apps heavily used by Rails community it’s for sysadmins and devops guys
- 6. how it works under the bonnet
- 7. philosophy it runs on your computer connects to the server over ssh there is no Capistrano server or sth like that automates the tasks you would manually do with command-line
- 8. philosophy part ii uses a Ruby-based DSL for task automation there are already ready-to-use tasks cap shell offers an interactive prompt for adhoc commands cap shell sessions are cached and can be reused
- 9. built-in tasks It ships with plenty of stuff, by default
- 10. ready-to-use recipes You can find plenty on Github https://github.com/nesquena/cap-recipes Ruby setup & RubyGems management Apache & Phusion Passenger Aptitude management MongoDB and much more!
- 11. custom tasks Tailor-made Capistrano tasks are easy. It’s all Ruby and Rake-like tasks, after all.
- 12. how to set it up prepare for the battle
- 13. set it up you need a Capfile in the root of the project then, you can execute capistrano tasks anywhere in your project’s folder, by running: cap <task name>
- 15. capify Capify is a file generator for your project usually used with Rails project but it works with other projects in general, it can be enhanced to work with other structures
- 16. capify One command to generate the files Files you need Capfile - basic Capistrano file in root of the project config/deploy.rb - here’s where you write custom tasks
- 17. production or staging config/deploy/production.rb config/deploy/staging.rb
- 18. roles allow you to write capistrano tasks that only apply to certain servers then you can do something like this
- 19. configuration example config/deploy.rb
- 20. custom tasks example config/deploy.rb
- 21. RAILS-specific magic tasks for Ruby on Rails only
- 22. asset precompile PROBLEM Asset precompile can be slow. It could take several minutes that we could use to make a coffee or watch some cats gifs
- 23. asset precompile solution Skip precompile, if it isn’t necessary “The ability to destroy a planet is insignificant next to the power of Git” --a tech-savvy Darth Vader
- 24. rails-specific magic config/deploy.rb Source: StackOverflow of course!
- 25. RESOURCES Deploying with Capistrano - Github Help https://help.github.com/articles/deploying-with-capistrano Capistrano Wiki https://github.com/capistrano/capistrano/wiki Capistrano Multistage extension https://github.com/capistrano/capistrano/wiki/2.x-Multistage-Extension Capistrano Handbook - still immature https://github.com/leehambley/capistrano-handbook/blob/master/ index.markdown Capistrano Google Group http://groups.google.com/group/capistrano