Application Automation with Habitat

1. Application Automation with Habitat
Simon Fisher / Fletcher Nichol

4. Errno::EACCES: Permission denied - /home/-----
/#####/-----/vendor/bundle/ruby/1.9.1/cache/bundler
/home/-----/.rvm/rubies/ruby-1.9.3-
p551/lib/ruby/1.9.1/fileutils.rb:247:in `mkdir'
/home/-----/.rvm/rubies/ruby-1.9.3-
p551/lib/ruby/1.9.1/fileutils.rb:247:in `fu_mkdir'
/home/-----/.rvm/rubies/ruby-1.9.3-
p551/lib/ruby/1.9.1/fileutils.rb:221:in `block (2
levels) in mkdir_p'
/home/-----/.rvm/rubies/ruby-1.9.3-
p551/lib/ruby/1.9.1/fileutils.rb:219:in
`reverse_each'
/home/-----/.rvm/rubies/ruby-1.9.3-
p551/lib/ruby/1.9.1/fileutils.rb:219:in `block in
mkdir_p'

7. include_recipe 'nginx::default’
template "#{node['dafne_online']['deploy_base']}/shared/config/nginx.conf" do
source 'nginx_conf.erb’
owner 'rails’
group 'admin’
mode '0644’
notifies :restart, 'service[nginx]’
end

8. deploy node['dafne_online']['deploy_base'] do
repository "https://#{node['dafne_online']['git_user']}:#{git_pw}@dafneonline.git.cloudforge.com/dafneonline.git" rollback_on_error true
environment rails_user_env
restart_command 'sudo -H -u rails bash -c "export PATH=/opt/rubies/2.2.3/bin:$PATH && /etc/init.d/unicorn_dafneonline restart"’
action :deploy symlinks shared_hash
user node['dafne_online']['deploy_user']
group 'admin’
before_symlink do
execute 'bundle install' do
command "bundle install --path #{node['dafne_online']['deploy_base']}/shared/bundle --without development test --deployment --quiet”
user node['dafne_online']['deploy_user']
environment rails_user_env
cwd release_path
action :run
end
end
before_restart do
link '/etc/init.d/unicorn_dafneonline' do
to '/home/rails/apps/dafneonline/current/config/unicorn_init.sh’
end
template "#{node['dafne_online']['deploy_base']}/current/config/unicorn.rb" do
source 'unicorn.rb.erb' owner node['dafne_online']['deploy_user']
group 'admin’
mode 00744
end
execute 'compile assets' do
command "RAILS_ENV=#{node['dafne_online']['rails_env']} bundle exec rake assets:precompile”
user node['dafne_online']['deploy_user']
environment rails_user_env
cwd release_path
action :run
end
end
after_restart do
execute 'notify Airbrake of deployment' do
command "RAILS_ENV=#{node['dafne_online']['rails_env']} bundle exec rake airbrake:deploy TO=#{node['dafne_online']['rails_env']} REVISION=
REPO=https://dafneonline.git.cloudforge.com/dafneonline.git USER=#{node['dafne_online']['deploy_user']}”
environment rails_user_env
user node['dafne_online']['deploy_user']
cwd release_path
action :run
end
end
end

9. 9

10. Habitat Technology
Plan Artifact Depot
Build
Service
Supervis
or
Supervis
or
Supervis
or
Supervis
or
Ring
Bare Metal
Containers
AMI
VM
Depot
Build Service &
Workflow
Package Format Artifact Distribution
Server
Artifact Distribution
Server
Intelligent Run-Time Supervisor w/REST
API
Source
Code
Repo
Supervisor Supervisor

11. Stop!
Demo Time

12. What’s New?
Habitat features and updates post-launch 2016

13. Package Search from Command Line
$ hab pkg search hab-studio
core/hab-studio/0.10.0/20160929200453
core/hab-studio/0.10.0/20160929200924
core/hab-studio/0.10.1/20160929223112
core/hab-studio/0.10.2/20160930230930
core/hab-studio/0.6.0/20160612082608
core/hab-studio/0.6.0/20160613075329
core/hab-studio/0.7.0/20160614232531
core/hab-studio/0.8.0/20160708162421
core/hab-studio/0.8.0/20160729121901
core/hab-studio/0.8.0/20160729180228
core/hab-studio/0.8.0/20160729195909
core/hab-studio/0.9.0/20160815225526
core/hab-studio/0.9.1/20160901205418
core/hab-studio/0.9.3/20160916192516
core/hab-studio/0.9.3/20160922234920
core/hab-studio/0.9.3/20160926154214

14. Improved Proxy Support
• Supports $http_proxy, $https_proxy, $no_proxy environment
variables
• Basic authentication
• Propagate into Studios

15. Iterate Service Configurations Quicker
using
–config-from
• Faster iteration of configuration templates during plan
development
• $ hab start yourorigin/yourpackage --config-from /path/to/config
• Intended only for development

16. Improved Root/Non-Root Behavior via
sudo
• Drop the need to prefix most hab commands with sudo
• Entering a Studio with sudo detects user’s key cache (not
root’s)
• $ hab setup; sudo hab studio enter
• Future release will “auto-sudo” when using Studio
subcommands

17. Better Mac Docker/Studio Upgrading
• Mac uses a Docker image for Linux Studio
• Runs Docker image with same version as hab CLI
• On upgrading hab CLI, new Docker image automatically pulled

18. Process: Release Train Model
• Userland tooling: hab CLI, Supervisor, Director
• Every second Thursday, cut from master
• Typically a minor version revision
• Features ship when ready and early features will hide behind
feature flags

19. Process: (Upcoming) Continuous
Deployment
• Platform infrastructure: web site, Depot, Builder
• Packages built off master and published to Depot
• Platform upgrades when new packages publish
• Decoupled release from userland tooling

20. Builder: A Distributed Build Service
• Micro service architecture, built with Habitat in mind
• Habitat runs on Habitat
• Upcoming: early access to build a package on the platform via
feature flag/invite
• Upcoming: building packages on pushes to GitHub
• Upcoming: dependent package rebuilding
• More details: “Habitat 301: Building Habitats” ChefConf 2016
Talk by Jamie Winsor

21. Expanding Horizons: Windows
• Bring Mac Habitat experience to Windows
• Building hab CLI
• Upcoming: ship first hab packages for Windows
• Upcoming: native Windows Habitat packages
• Upcoming: Supervisor running on Windows

22. Contribute to “Habtoberfest”!
• Habitat participating in Digital Ocean’s Hacktoberfest event
• Runs October 1st through 31st
• Make 4 pull requests (on any FOSS project), earn a limited
edition Hacktoberfest T-shirt
• Habitat repo has “Hacktoberfest” tagged issues
• http://hacktoberfest.digitalocean.com

23. Help Shape the Direction of Habitat
• Try out Habitat https://www.habitat.sh/try/
• Build a package
• Try out use cases, contact us when: you win, you come up
short, (i.e. anytime)
• Join us in HabiChat http://slack.habitat.sh/
• We’re at a Community Summit—let’s talk!