Chef for the Symfony developer

Chef has become one of the most popular frameworks to automate infrastructure using code, it's being used by big companies like Facebook but you don't need to have a large infrastructure to benefit from it. This is an introductory talk to Chef but also the result of my experience using Chef for a couple years with Symfony projects.

Transcript

1. Chef for the Symfony developer Carlos Mafla github.com/gigo600 @gigo6000 meetup.com/SymfonyCali
2. About Me • Web Developer (Backend, DevOps, Frontend developer, etc ) • 10+ years of working with PHP • 5+ years of working with Symfony • Scalable Path • @gigo6000 • github.com/gigo6000
5. Others
8. Local = Dev = Stage = Prod
9. apt-get install apache2 apt-get install php5 php5-curl … yum install httpd yum install php php-curl … lots of clicks on “Next” buttons… brew install httpd24 …
14. PHP >=5.4 $arr = [1, 2, 3]; PHP <5.4
15. Local = Dev = Stage = Prod
16. What’s Chef? Chef is a framework that allows you to setup a server using code
17. Why use Chef? • Consistency between environments • Automation • Versionable/Reusable infrastructure code • It’s used by Facebook, Airbnb, Mozilla, etc, etc • Setting up a local environment could take minutes not hours or days
18. It’s Ruby
19. Chef Terms • Nodes • Workstation • Recipes • Cookbooks • Attributes • Environments • Roles • Data Bags • Knife • Berkshelf • Chef Supermarket
20. Node = Server
21. Workstation = Your computer
22. Recipe = chef/cookbooks/mycookbook/recipes/php.rb dependency cookbook Resource as a PHP function template(path,source,…)
23. Cookbook = - my-cookbook - attributes - metadata.rb - providers - recipes - resources - templates - apache.rb - php.rb - mysql.rb - cronjobs.rb - etc
24. Attributes = chef/cookbooks/mycookbook/attributes/default.rb cookbook Ruby : ”add to the end of this array" Similar to Symfony config file: config.yml
25. Environment = JSON env name Similar to Symfony config files: config_dev.yml config_stage.yml
26. Role = Group of recipes Role: webserver Recipes: php apache
27. Data Bag= big JSON object Encrypted with Chef Vault Passwords API keys SSL certificates etc
28. Knife Command-line tool =
29. Berkshelf = Berkshelf is a dependency manager Cookbook Versions Berks command line tool
30. Berksfile chef/cookbooks/mycookbook/metadata.rb
31. Chef Supermarket https://supermarket.chef.io/
32. Packagist
33. Symfony2+Chef Project Structure - Berksfile - Berksfile.lock - app - bin - chef - src - vendor - web - cookbooks - data_bags - environments - roles - my-cookbook - attributes - metadata.rb - providers - recipes - resources - templates Chef Repo
34. Chef Workstation Chef Server Chef Node Chef Node Chef Node Workflow Knife Berks cookbook Chef Client Chef Client Chef Client data bags
35. Cool things to do with Chef
36. Continuous deployment https://docs.chef.io/resource_deploy.html Symfony Env variables deploy path
37. Callbacks •after_restart •before_migrate •before_restart •before_symlink php bin/vendors install php app/console cache:warmup php app/console assets:install web php app/console assetic:dump web deploy/before_migrate.rb https://docs.chef.io/resource_deploy.html Similar to Capistrano
38. Shared files/dirs https://docs.chef.io/resource_deploy.html
39. Chef + Vagrant Vagrantfile Requires vagrant-berkshelf plugin Path to chef repo Change document root to /vagrant Roles/Recipes that will be installed Use Chef Solo to provision
40. $ vagrant up
41. Important Chef Solo doesn’t have access to the Chef Server so Chef Vault won’t work
42. Environment to the rescue
44. AWS Instances are disposable!
46. • Your server will be deleted • You need to replace it if it doesn’t start again • Make sure you are backing up your database in PROD • You should be able to recreate anything on the server: bash scripts, assets, cronjobs, etc 
 What this means?
48. http://github.com/gigo600/ symfony-chef-vagrant
49. Conclusion • If you are using AWS and you are not using Chef you should be worried • Use any provisioning tool if aren’t using one • Try Chef + Vagrant for your local environment
50. Gracias