cooking an omelette with chef

Cooking an Omelette with Chef

Case Taintor

Wednesday, October 9, 13

Survey

• Who has been manually configuring their machines?

• Who has been using a tool like Chef or Puppet?

• Who is an expert in Chef?

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Purpose

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How did we work?

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Infrastructure as Code

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Where do we start?

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Priorities

• Reproducibility

• Testability

• Traceability

• Keep It Simple, Stupid

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How does Chef work?

• Figures out which instructions to run

• Runs them in an idempotent way

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Cookbook

Everything to install & configure a component

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Cookbooks

attributesdefinitionsfileslibrariesprovidersrecipesresourcestemplates

attributesdefinitionsfileslibrariesprovidersrecipesresourcestemplatesmetadata.rb

$ ls -1 cookbook

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Cookbooks

attributesdefinitionsfileslibrariesprovidersrecipesresourcestemplatesmetadata.rb

$ ls -1 cookbook

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nginx cookbook

attributesdefinitionsfileslibrariesprovidersrecipesresourcestemplates

attributesattributes/default.rbattributes/source.rbdefinitionsfilesrecipesrecipes/default.rbrecipes/source.rbtemplatesmetadata.rb

$ ls -1 nginx

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Then What?

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run_list

{ ... "run_list": [ "recipe[rvm::system]", "recipe[nginx]", "recipe[user]" ] ...}

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How do I run Chef?

node1

chef-solo

all config

node2

chef-solo

all config

chef-solo

node1

chef-client

config

node2

chef-client

config

chef-server

chef-server

config

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Problems

Problem Solution

RepeatabilityReproducibilityIdempotence

Chef

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Problems

Problem Solution

RepeatabilityReproducibilityIdempotence

Chef

Versioning

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default rvm

default['rvm']['default_ruby'] = "ruby-1.9.3-p327"default['rvm']['rubies'] = []default[‘rvm][‘version’] = “head”

rvm/attributes/default.rb

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BerkshelfWednesday, October 9, 13

Problems

Problem Solution

RepeatabilityReproducibilityIdempotence

Chef

Versioning Berkshelf

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Problems

Problem Solution

RepeatabilityReproducibilityIdempotence

Chef

Versioning Berkshelf

Development

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Problems

Problem Solution

RepeatabilityReproducibilityIdempotence

Chef

Versioning Berkshelf

Development Vagrant + VirtualBox

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Problems

Problem Solution

RepeatabilityReproducibilityIdempotence

Chef

Versioning Berkshelf

Development Vagrant + VirtualBox

KISS

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GusteauWednesday, October 9, 13

Problems

Problem Solution

RepeatabilityReproducibilityIdempotence

Chef

Versioning Berkshelf

Development Vagrant + VirtualBox

KISS Gusteau

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omelette-server• rvm • nginx • users

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Process

$ gusteau init omelette-cooker

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Berksfile

site :opscode

cookbook 'rvm', :github => 'fnichol/chef-rvm'cookbook 'nginx'cookbook 'user'

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.gusteau.yml

...environments: development: nodes: web: run_list: - recipe[rvm::system] - recipe[nginx] - recipe[user::data_bag] ...

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$ vagrant up development-web

$ gusteau converge development-web

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Next Problems

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Share your stuff

• Inside your organization

• Outside your organization

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default rvm

default['rvm']['default_ruby'] = "ruby-1.9.3-p327"default['rvm']['rubies'] = []default[‘rvm][‘version’] = “head”

rvm/attributes/default.rb

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your rvm modifications

default['rvm']['default_ruby'] = "ruby-1.9.3-p448"default['rvm']['rubies'] = ["ruby-1.9.3-p448", "ruby-1.9.3-p327"]default[‘rvm][‘version’] = "1.21.4"

rvm/attributes/default.rb

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Wrapper Cookbooks

$ knife cookbook create wrapper-rvm -o site-cookbooks

normal[:rvm][:default_ruby] = "ruby-1.9.3-p448"normal[:rvm][:rubies] = ["ruby-1.9.3-p448", "ruby-1.9.3-p327"]normal[:rvm][:version] = "1.21.4"

include_recipe "rvm::system"

site-cookbooks/wrapper-rvm/attributes/default.rb

site-cookbooks/wrapper-rvm/recipes/default.rb

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Wrapper Cookbooks

place dependencies in metadata.rb

depends ‘rvm’, ‘0.9.1’

site-cookbooks/wrapper-rvm/metadata.rb

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.gusteau.yml

...environments: development: nodes: web: run_list: - recipe[wrapper-rvm] - recipe[nginx] - recipe[user::data_bag] ...

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$ vagrant up development-web

$ gusteau converge development-web

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Share

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Berksfile

site :opscode

cookbook 'rvm', :github => 'fnichol/chef-rvm'cookbook 'nginx'cookbook 'user'cookbook ‘wrapper-rvm’, :git => ‘...:wrapper-rvm.git, :branch => ‘0.1.0’

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Next Steps

• Sharing common setups

• Cookbook development

• Move to Chef Server

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Wrap Up

• Recognize what you want

• Use tools

• Iterate

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Questions?

More Info: @ctaintorWednesday, October 9, 13

Image References

Danley, Brent. "Crowded Beach." Flickr. Yahoo!, n.d. Web. 05 Oct. 2013. <http://www.flickr.com/photos/brentdanley/1086226020/>.

Goehring, David. "Does Not Work." Flickr. Yahoo!, n.d. Web. 04 Oct. 2013. <http://www.flickr.com/photos/carbonnyc/496721450/>.

Harber, Chris. "Food I Made 1." Flickr. Yahoo!, n.d. Web. 07 Oct. 2013. <http://www.flickr.com/photos/britishchris/4437265186/>.

Johnson, Darren. "Koh Ngai." Flickr. ShotHotspot.com, n.d. Web. 04 Oct. 2013. <http://www.flickr.com/photos/dazjohnson/7424536244/>.

Komulainen, Tommi. "Handlebar Is No More." Flickr. Yahoo!, n.d. Web. 05 Oct. 2013. <http://www.flickr.com/photos/tommikomulainen/137069098/>.

Reck, Bob. "My Motorcycle." Flickr. Yahoo!, n.d. Web. 05 Oct. 2013. <http://www.flickr.com/photos/u2sockmonkey/116641053/>.Used with permission.

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