Getting Started with Puppet and Vagrant

At PuppetCamp in autumn 2014 @jtopper gave a live demo on how to use Puppet and Vagrant. You can watch the live recording, and follow along by checking out the Git repository. (You'll need to install Vagrant to try the demo yourself).

https://www.youtube.com/watch?v=SualB5oNVYc
https://github.com/jtopper/vagrant-demo
https://vagrantup.com/

Transcript

1. Getting Started with Puppet and Vagrant Jon Topper The Scale Factory
2. 2 Cool Technologies That Will Actually Change Your Life
3. Chronology 2000 2005 2010 2015 1995
4. Sysadmin Development Lifecycle Set up test environment Make change Did change work? Commit Yes No
5. Hardware Approach Set up test environment Make change Did change work? Commit Yes No ‣ Walk to server room ‣ Plug in keyboard/monitor ‣ Reboot Server (~2m) ‣ Wait for Kickstart install (~30m) ‣ Upload automation bash scripts ‣ Run them (~15m) ‣ Assess success
6. Virtualisation Set up test environment Make change Did change work? Commit Yes No ‣ Use Kickstart to create base image (~30m) ‣ Roll back to VM snapshot ‣ Upload automation bash scripts ‣ Run them (~15m) ‣ Assess success
7. What is Vagrant? ‣ Command line tool ‣ Supports Linux, Mac, Windows ‣ Supports multiple hypervisors ‣ Folder sharing ‣ As portable as your laptop
8. What is Vagrant? ‣ Import pre-defined “base boxes” from remote servers ‣ Describe box configuration in Vagrantfile ‣ Share both with other people ‣ “vagrant up” starts a clean, new environment ‣ “vagrant destroy” throws it away.
9. What is Vagrant? Operating System Webserver Text editor Browser Database Messenger Music Twitter Photoshop Filesystem
10. What is Vagrant? Operating System Webserver Text editor Browser Database Messenger Music Twitter Photoshop Guest O/S Filesystem
11. Puppet ‣ Configuration Management tool ‣ “Infrastructure as Code” ‣ Convergent
12. Puppet ‣ Describe desired system state ‣ “What”, rather than “How” ‣ Puppet moves system from current, to desired state
13. Demo Project Structure . !"" README.md !"" Vagrantfile !"" application # !"" index.php # $"" ping.php $"" puppet !"" manifests # $"" site.pp $"" modules !"" demo_apache # !"" files # # $"" httpd.conf # $"" manifests # $"" init.pp !"" demo_defaults # $"" manifests # $"" init.pp !"" demo_php # $"" manifests # $"" init.pp !"" demo_role_database
14. Vagrantfile Vagrant.configure("2") do |config| # Set up some box defaults. We're going to use the Puppet Labs # CentOS 6.5 x86_64 base box, and give it 1GB RAM config.vm.box = 'puppetlabs/centos-6.5-64-puppet' # … # Set up some Puppet "facts". These will be available to the # puppet manifests when they run. puppet_facts = { "vagrant" => “1”, "roles" => [ 'webserver', 'database' ] } # Provision the Vagrant box using Puppet. config.vm.provision "puppet" do |puppet| puppet.manifests_path = "puppet/manifests" puppet.manifest_file = "site.pp" puppet.module_path = "puppet/modules" puppet.facter = puppet_facts end end
15. Nodeless Configuration # On every node... node default { # ...apply some default settings class { demo_defaults: } # Then apply classes for each role we've found via facts: if( 'webserver' in $roles ) { notice("Found 'webserver' role via Facts") class { demo_role_webserver: } } if( 'database' in $roles ) { notice("Found 'database' role via Facts") class { demo_role_database: } } }
16. Nodeless Configuration class demo_defaults { # ... # If this is a vagrant box, let's just stop iptables because we don't need # any firewalling. if( $vagrant ) { service { "iptables": ensure => stopped, enable => false, } } }
17. (Demo)
18. Benefits ‣ Short cycle time ‣ No copying files around ‣ Share box & manifests with development teams ‣ Easy to try existing config on new operating systems
19. Advanced Usage ‣ Multiple box environments with private networking ‣ “vagrant share” features of Vagrant Cloud ‣ Build production images with the same tools ‣ Build fully automated test suites
20. Try it yourself ‣ https://github.com/jtopper/vagrant-demo ‣ Follow the instructions in the README ‣ Open a new GitHub issue if you get stuck!
21. http://www.scalefactory.com/ jon@scalefactory.com @jtopper scalefactory