The document discusses implementing continuous delivery and DevOps practices to reduce risk when deploying software changes. It emphasizes that adopting these practices requires changing development and release processes. Automating everything from source code to packaging and deploying releases is key to enabling more frequent and lower-risk deployments. Tools like Chef, Vagrant, and Berksflow can help implement these practices and establish a repeatable deployment workflow.

1. Holy shitthe Polish
knowhowto drink. I
hope nobodycantell
thatI'm stilldrunk
from lastnight
ByJamieWinsor

3. BerkshelfCoreTeam
» Jamie Winsor <jamie@vialstudios.com>
» Seth Vargo <sethvargo@gmail.com>
» Michael Ivey <michael.ivey@riotgames.com>

4. berkshelf
Chef Cookbook manager and
dependency resolver
» Retrieve a cookbooks
dependencies
» Package cookbooks and their
dependencies
» Author new cookbooks

5. » League of Legends
» Guild Wars 2
» TERA
» Lord of The Rings Online
» Dungeons and Dragons Online
» Asheron's Call

7. "DeployWindows"

8. Risk Mitigation

9. Introducing change
intoasystem isa
synonym for
introducing risk

10. Notdeploying isa
risk,too

11. Q.What?
A. Graphingthe risk
ofmultiple changes
overtime isn'tlinear

12. Risk is exponentiallygreater
irb> changes = ChangeSet.new
irb> changes.add Change.new
irb> changes.risk_level
=> 1
irb> 5.times do
irb> changes.add Change.new
irb> end
irb> changes.risk_level
=> 46656
Risk Level: 6 ^ 6

13. Notdeployingat5pm
isn'tRobbing peter
to paypaul

14. Notdeployingat5PM is:
1.Killing Peter
a. Framing it as a suicide
b. Making his wife your wife
c. Stealing his entire family inheritence
d. Telling his children you're their new dad
e. Defecating on his grave
To payPaul

15. When shouldwe
deploy?

17. Yeah, I'm gonna
release itat5PM ona
Friday.

18. DeployWindows
Aclear indicatorthatyour
release process is broken

19. Whataboutthe
risk?
That'swhywe have
deploywindows

20. Theyexistbecause
Deployment
wasan
afterthought
And it'swithinyour
powerto control
deploymenttimesto
reduce risk

21. Thatsoftware doesn'teven
wantto be deployed

22. JustDeployAlready

23. Howdowe reduce risk
while stillallowing for change

24. Continuous Delivery&
Devops
Tothe rescue

25. “Justrub some
DevOps on it.”
Joshua Timberman

26. DevOps isasoftware
developmentpattern

27. DevOps is not
» A position
» A team
» A department
» Or an organization

28. “Disruptive startup
is hiring DevOps
ninjas”
LinkedIn Spammer

30. You can'tbuya
DevOpstooland
You can'tbuyacontinuous
deliverytool

31. Software doesn't
solve problems.
People do.

32. “Ifyou putthe right
people inthe right
roomthey'llsolve
the problemthe
rightway”
Jeff Hackert

33. ComingTogether

34. Youwillneedto
changeyour
developmentand
release process

35. Adopting devops is
MUCH EASIER
on newprojects

36. Startsmall
Your firstprogram is
typically"Hello,World!"

37. Automateandtest
everything

38. Version, package,
and release
EVERYTHING

39. Let's build something

40. Application Checklist
» Source code
» Build tasks
» Release tasks
» Cookbook

41. Resulting in
1.Software Artifact (app.tar.gz)
2.Cookbook Artifact (cookbooks.tar.gz)
3.Installation | Upgrade | Configuration Docs

42. Ifyou'readeveloper
Give these three things to your Operators for every
release.

43. Elixir

45. GenerateYour Project
$ mix new highfive

46. Addto source control
$ cd highfive
$ git init .
$ git remote add origin git@github.com:reset/highfive.git

47. GenerateYour application's
Cookbook
$ berks cookbook highfive ./cookbook --pattern environment --skip-git

48. Make deployment
partofyour build
process

49. CookbookAndApplication Share
Version
$ cat cookbook/metadata.rb
name "highfive"
maintainer "Jamie Winsor"
maintainer_email "jamie@vialstudios.com"
license "All rights reserved"
description "Installs/Configures highfive"
long_description "Installs/Configures highfive"
version File.read(File.expand_path("../../VERSION", __FILE__))

50. $ cat cookbook/attributes/default.rb
#
# Cookbook Name:: highfive
# Attribute:: default
#
default[:highfive][:release] =
Highfive::Chef.cookbook_version(run_context)}

51. $ cat cookbook/libraries/highfive.rb
#
# Cookbook Name:: highfive
# Libraries:: highfive
#
module Highfive
module Chef
class << self
# Returns the version of the loaded highfive cookbook
#
# @param [Chef::RunContext] context
#
# @return [String]
def cookbook_version(context)
context.cookbook_collection["highfive"].version
end
end
end
end

52. EnvironmentCookbook
» Nearly identical to an Application Cookbook
» Has it's Berksfile.lock committed into version
control

53. BuildTasks
» Version bump
$ mix version.bump patch
» Compile
$ mix compile
» Test
$ mix test

54. Version Bumping
Generates a VERSION file at the root of the project
$ cat VERSION
1.0.0

55. Howdowe getour
compiled software
in ourvm?

56. Buildand package release
» OTP Release assemble
$ mix release.assemble
» Package
$ mix package
$ ls pkg
highfive-osx.tar.gz

57. We needtoassemble
arelease forthe os
we're deployingto

58. BuildaBuild Server

59. Build Server Recipe
$ cat cookbook/recipe/build_server.rb
include_recipe "highfive::_common"
include_recipe "build-essential::default"
include_recipe "elixir::default"

60. Editmetadata.rb
$ cat cookbook/metadata.rb
name "highfive"
maintainer "Jamie Winsor"
maintainer_email "jamie@vialstudios.com"
license "All rights reserved"
description "Installs/Configures highfive"
long_description "Installs/Configures highfive"
version "0.1.0"
supports "ubuntu"
depends "build-essential", "~> 2.0"
depends "elixir", "~> 0.5"

61. VagrantBuilderOn-demandvirtualized build server

62. Vagrant.configure("2") do |config|
# ... additional configuration ...
config.vm.synced_folder File.dirname(__FILE__), "/builder"
config.vm.provision :chef_solo do |chef|
chef.run_list = [ "recipe[highfive::build_server]" ]
end
config.vm.provision :shell, inline: <<-SCRIPT
export PATH=/usr/local/lib/elixir/bin::$PATH
export ELIXIR_EBIN=/usr/local/lib/elixir/lib/elixir/ebin
export MIX_ENV=prod
mix clean --all
mix version.bump patch
mix deps.get
mix compile
mix release.assemble
mix package
SCRIPT
end

63. Build it(from our hostmachine)
$ vagrant up --provision
.... provisioning ...
$ ls pkg
highfive-linux-x86-tar.gz

64. deploying our
artifact

65. Create app.rb recipe
node.set[:'build-essential'][:compile_time] = true
include_recipe "libarchive::default"
include_recipe "runit"
libarchive_file "highfive-linux-x86.tar.gz" do
path "/pkg"
extract_to "/opt/highfive"
owner "highfive"
group "highfive"
action :extract
notifies :restart, "runit_service[highfive]"
only_if { ::File.exist?(asset.asset_path) }
end
runit_service "highfive"

66. Update Cookbook Dependencies
depends "build-essential", "~> 2.0"
depends "elixir", "~> 0.5"
depends "libarchive"

67. Edit.kitchen.yml
$ cat cookbook/.kitchen.yml
driver:
name: vagrant
synced_folders:
- ["<%= File.expand_path("../../pkg", __FILE__) %>", "/pkg"]
provisioner:
name: chef_solo
platforms:
- name: ubuntu-12.04
suites:
- name: default
run_list:
- recipe[highfive::default]
attributes:

68. Kitchen Converge
$ cd cookbook
$ kitchen converge
-----> Starting Kitchen (v1.2.2.dev)
...
-----> Kitchen is finished. (14m6.31s)

69. Generatingthe Cookbookartifact
$ berks package pkg/cookbooks.tar.gz -b cookbook/Berksfile
Cookbook(s) packaged to pkg/cookbooks.tar.gz

70. Thearchive contains
» The Berksfile.lock from resolution
» A cookbooks directory containing each cookbook
found in the Berksfile.lock

71. Putthesearchives in
anartifactserver

72. ArtifactServers
» Github | Github Enterprise
» Sonatype's Nexus
» Artifactory
» Basic Auth HTTP Server (sadface)
(https://artifacts.myorg.com/myapp/1.2.3/
myapp.tar.gz)

73. Github Releasesand
ReleaseAssets

75. GitHub Deploy
asset_path = "/pkg"
unless node[:highfive][:_local_deploy]
asset = github_asset "berkshelf-api.tar.gz" do
repo "berkshelf/berkshelf-api"
release "v1.2.1"
end
asset_path = asset.path
end
libarchive_file "highfive-linux-x86.tar.gz" do
path asset_path
extract_to "/opt/highfive"
owner "highfive"
group "highfive"
action :extract
notifies :restart, "runit_service[highfive]"
only_if { ::File.exist?(asset.asset_path) }
end

76. Update .kitchen.yml
driver:
name: vagrant
synced_folders:
- ["<%= File.expand_path("../../pkg", __FILE__) %>", "/pkg"]
provisioner:
name: chef_solo
platforms:
- name: ubuntu-12.04
suites:
- name: default
run_list:
- recipe[highfive::default]
attributes: {
highfive: {
_local_deploy: true
}
}

77. Releaseartifactsallowusto
» Build a new environment with a specific version
» Upgrade pre-existing environments
» Promote through logical environments
(Dev, Stage, Production)

78. DeployIt

79. Create Environment
$ knife environment create highfive-dev

80. BootstrapANode
$ knife ec2 server create -I ami-0eb2d83e -E highfive-dev

81. Berkflow
ACookbook-Centric
Deploymentworkflowtool

82. InstallBerkflowwith Chef-DK
$ chef gem install berkflow
$ export PATH=/opt/chefdk/embedded/bin:$PATH
$ which blo
/opt/chefdk/embedded/bin/blo

83. "Install"the cookbookartifact
intoyour ChefServer
$ blo install https://github.com/reset/highfive/releases/download/v1.0.0/cookbooks.tar.gz

84. "Upgrading"aChefEnvironment
$ blo upgrade highfive-dev highfive 1.2.1
Or upgrade to latest
$ blo upgrade highfive-dev highfive latest

85. One Button Upgrade

86. Beacatalystfor change
Butdon'texpecta
parade. It's not
coming.

87. Even ifitdoes
Youwon'thaveyour own
float

88. WannaMake Games?
http://undeadlabs.com/jobs/
» Game Programmer
» Game Producer
» Game Animator
» Game Designer

89. JamieWinsor
@resetexistence
github.com/reset