London Community Summit 2016 - Fresh New Chef Stuff
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The document provides a comprehensive overview of Chef's developments over the past year, including numerous releases and commits across various Chef projects. It highlights the introduction of custom resources, improvements with Chef Solo, built-in package management for apt and yum, and updates for macOS and Windows resources. Furthermore, it emphasizes the enhanced usability, simplified DSL, and expanded platform support for Chef's functionalities.
![resources/myapp.rb file:
actions :create
default_action :create
attribute :name, kind_of: String, name_attribute: true
attribute :app_name, kind_of: String, default: 'default_app'
providers/myapp.rb file:
use_inline_resources
def whyrun_supported?
true
end
action :create do
template '/some/web/app/config' do
owner 'root'
group 'root'
variables(app_name: new_resource.app_name)
notifies :restart, 'service[apache2]'
end
service 'apache2' do
action :nothing
end
end
resources/myapp.rb file:
property :name, String, name_attribute: true
property :app_name, String, default: 'default_app'
action :create do
template '/some/web/app/config' do
owner 'root'
group 'root'
variables(app_name: new_resource.app_name)
notifies :restart, 'service[apache2]'
end
end
Simplified DSL in Action:](https://image.slidesharecdn.com/londoncommunitysummit2016-freshnewchefstuff-161018144240/85/London-Community-Summit-2016-Fresh-New-Chef-Stuff-14-320.jpg)
![Delete
Previously:
chef_gem "chef-rewind"
require 'chef/rewind'
unwind "user[postgres]"
Now:
delete_resource(:user,”postgres")](https://image.slidesharecdn.com/londoncommunitysummit2016-freshnewchefstuff-161018144240/85/London-Community-Summit-2016-Fresh-New-Chef-Stuff-20-320.jpg)
![Edit
Previously:
chef_gem "chef-rewind"
require 'chef/rewind'
rewind “user[postgres]" do
home “/var/lib/postgres”
end
Now:
edit_resource!(:user,”postgres”) do
home “/var/lib/postgres”
end](https://image.slidesharecdn.com/londoncommunitysummit2016-freshnewchefstuff-161018144240/85/London-Community-Summit-2016-Fresh-New-Chef-Stuff-21-320.jpg)
![Setup package repositories
apt_repository "OurCo" do
uri "http://artifacts.ourco.org/ubuntu/something"
action :true
components ["main"]
end
yum_repository "OurCo" do
description "OurCo Yum repository"
mirrorlist "http://artifacts.ourco.org/mirrorlist?repo=ourco-6&arch=$basearch
gpgkey "http://artifacts.ourco.org/pub/yum/RPM-GPG-KEY-OURCO-6"
action :create
end](https://image.slidesharecdn.com/londoncommunitysummit2016-freshnewchefstuff-161018144240/85/London-Community-Summit-2016-Fresh-New-Chef-Stuff-25-320.jpg)
London Community Summit 2016 - Fresh New Chef Stuff
- 1. Fresh New Chef Stuff Thom May & Tim Smith - Community Engineering
- 2. Chef Year in Review
- 3. 10 chef client releases 7 chef server releases 13 ohai releases
- 4. 7,000+ commits across chef projects! 7,000+ more in chef managed community cookbooks!
- 5. - apt_update - apt_repository - yum_repository - systemd_unit - chocolatey_package - cab_package - launchd - osx_profile - ksh New Chef Resources
- 6. - shard - machineid - hostnamectl - shells - hardware - time - fips - scala - sessions - packages New Ohai Plugins
- 7. Do yourself a favour and upgrade!
- 8. Let’s jump into some new stuff!
- 10. Custom resources are reusable Chef resources you define within your cookbooks that make it easy to automate repetitive tasks within your organization’s cookbooks
- 11. Custom resources build on the foundations of Lightweight Resource Providers (LWRPs) with powerful new functionality and a simpler DSL
- 12. Custom Resources • Introduced in Chef 12.5 • Compatible with Chef 12.1+ using the compat_resource cookbook • Build on years of LWRP experience and development
- 13. Improvements compared to LWRPs • Everything is defined in a single file • Greatly simplified DSL • New DSL for supporting multiple platforms / platform versions • “Just works” out of the box
- 14. resources/myapp.rb file: actions :create default_action :create attribute :name, kind_of: String, name_attribute: true attribute :app_name, kind_of: String, default: 'default_app' providers/myapp.rb file: use_inline_resources def whyrun_supported? true end action :create do template '/some/web/app/config' do owner 'root' group 'root' variables(app_name: new_resource.app_name) notifies :restart, 'service[apache2]' end service 'apache2' do action :nothing end end resources/myapp.rb file: property :name, String, name_attribute: true property :app_name, String, default: 'default_app' action :create do template '/some/web/app/config' do owner 'root' group 'root' variables(app_name: new_resource.app_name) notifies :restart, 'service[apache2]' end end Simplified DSL in Action:
- 15. Fresh New Chef Stuff Episode 1: Custom Resources Youtube Video http://bit.ly/2dqpMJg
- 16. Chef Solo
- 17. Chef Solo now uses the same technology as Chef Client Local Mode
- 18. Editing and Deleting Resources
- 19. The Chef Rewind extension is no longer required - Chef 12.10 and later.
- 20. Delete Previously: chef_gem "chef-rewind" require 'chef/rewind' unwind "user[postgres]" Now: delete_resource(:user,”postgres")
- 21. Edit Previously: chef_gem "chef-rewind" require 'chef/rewind' rewind “user[postgres]" do home “/var/lib/postgres” end Now: edit_resource!(:user,”postgres”) do home “/var/lib/postgres” end
- 22. Built in Apt/Yum resources
- 23. name "my_cookbook" maintainer "Me" maintainer_email "[email protected]" license "Apache 2.0" version "1.0.0" depends "apt" depends "yum"
- 24. Prep Debian / Ubuntu package cache apt_update "Update Please" include_recipe "apt::default"
- 25. Setup package repositories apt_repository "OurCo" do uri "http://artifacts.ourco.org/ubuntu/something" action :true components ["main"] end yum_repository "OurCo" do description "OurCo Yum repository" mirrorlist "http://artifacts.ourco.org/mirrorlist?repo=ourco-6&arch=$basearch gpgkey "http://artifacts.ourco.org/pub/yum/RPM-GPG-KEY-OURCO-6" action :create end
- 26. Multi Package
- 27. Multiple Packages Previously: %w{ httpd jenkins tmux }.each do |pkg| package pkg end Now: package %w{ httpd jenkins tmux }
- 29. New Resources for macOS launchd (Chef 12.8.1) osx_profile (Chef 12.7.0)
- 30. Big thanks to Facebook for their macOS work
- 32. Previously Recipe: chef_gem "docker" do compile_time true end Library: begin require 'docker' rescue LoadError puts "waiting to load Docker" end
- 35. New Resources chocolatey_package (Chef 12.7.0) cab_package (Chef 12.15.19)
- 36. Newly Built in Windows Resources • reboot • batch • registry • package
- 37. name “my_windows_cookbook" maintainer "Me" maintainer_email "[email protected]" license "Apache 2.0" version "1.0.0" depends "windows"
- 39. More built-ins Simpler DSLs Expanded platform support