Vagrant and Chef for Rails Developers

Rails Software Development with Chef and Vagrant

Transcript

1. Rails Software Development !
   with Chef and Vagrant
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   Martin Fenner
   Technical Lead, PLOS Article-Level Metric Project
   https://github.com/mfenner
   http://en.wikipedia.org/wiki/Chef
   

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2. https://github.com/articlemetrics/alm-report
   

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3. http://www.flickr.com/photos/jeffhester/77728574/
   Dev/Prod Parity
   Keep development, staging, and production as similar as possible!
   http://12factor.net/dev-prod-parity
   

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4. Dev Environment == Production
   Then you can’t develop on a Mac?
   

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5. Bundler provides a consistent environment for
   Ruby projects by tracking and installing the
   exact gems and versions that are needed.
   RVM is a command-line tool which allows you to
   easily install, manage, and work with multiple ruby
   environments from interpreters to sets of gems.
   Homebrew installs the stuff you need that Apple
   didn’t.
   RubyGems is a package manager for the Ruby
   language.
   Good, but not good enough
   

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6. These two make a difference
   Automation
   Virtualization
   http://en.wikipedia.org/wiki/Max_and_Moritz
   

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7. 3
   Dev Environment == Production
   Automation!
   Shell!
   Ansible!
   CFEngine!
   Chef!
   Puppet!
   Salt!
   Docker
   Virtualization!
   Virtualbox!
   VMware!
   AWS!
   Rackspace!
   Digital Ocean!
   Hyper-V!
   Docker
   https://www.vagrantup.com/
   Vagrant is a tool for building complete
   development environments
   

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8. Dev Environment == Production
   https://xkcd.com/
   

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9. Dev Environment == Production
   https://xkcd.com/
   Vagrant Core Concepts
   Code and configuration management is under
   version control. Clone a repo and get started.
   Shared Folders
   Host and guest Virtual Machine share access to the
   project code. Use your favorite editor for
   development and see changes immediately.
   Keep it Simple Dramatically reduce the learning curve to configure
   a Virtual Machine and run IT automation software.
   No Vendor Lock-in
   Open source software (VMware plugin is
   commercial). Flexibility in virtualization and
   automation tools.
   

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10. The Future!
    But not much help for developing single web
    applications on a Mac
    https://www.docker.com/
    

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11. https://downloads.getchef.com/chef-dk
    

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12. https://downloads.getchef.com/chef-dk
    A cookbook is the fundamental unit of configuration
    and policy distribution.!
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    Cookbooks are written in Ruby, using the Chef DSL.!
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    The Chef Supermarket is the central community
    resource for cookbooks.!
    https://supermarket.getchef.com/!
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    Berkshelf and Librarian-Chef are two popular tools
    to manage cookbook installation and dependencies.!
    http://berkshelf.com/!
    https://github.com/applicationsonline/librarian-chef!
    Chef Cookbooks
    

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13. Dev Environment == Production
    Chef Recipes
    https://github.com/articlemetrics/alm_report-cookbook
    This recipe installs and configures the ALM Reports
    Ruby on Rails application.
    

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14. Dev Environment == Production
    https://github.com/articlemetrics/mysql_rails-cookbook/blob/master/providers/default.rb
    Chef Resource (LWRP)
    Trend is to use resources instead of recipes.
    

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15. Dev Environment == Production
    Chef Attributes
    https://github.com/articlemetrics/ruby-cookbook/blob/master/attributes/default.rb
    Although there many standard cookbooks, best
    practices are still emerging.
    

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16. http://kitchen.ci/
    Test Kitchen
    

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17. Dev Environment == Production
    Serverspec
    https://github.com/articlemetrics/passenger_nginx-cookbook/blob/master/test/integration/default/serverspec/nginx_spec.rb
    Test-driven development for infrastructure code.
    

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18. Dev Environment == Production
    Further Reading
    Pivotal Sprout!
    Chef recipe to configure an OS X Mavericks developer workstation!
    https://github.com/pivotal-sprout
    Customizing Chef!
    Chef for cookbook authors. August 2014!
    http://shop.oreilly.com/product/0636920032984.do
    Vagrant Blog!
    Feature Preview: Docker-Based Development Environments!
    https://www.vagrantup.com/blog/feature-preview-vagrant-1-6-
    docker-dev-environments.htm
    

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