Vagrant and Ansible: A love story

My talk "vagrant + ansible: A love story" will introduce the audience not yet familiar with vagrant to this wonderfull tool which aims at "Create[ing] and configur[ing] lightweight, reproducible, and portable development environments". This will include a short overview over the architecture of vagrant and the different use cases. Two different ways of using ansible with vagrant will be discussed together with pro's and con's of both. Best practices of working withvagrant and ansible will be described.

Transcript

1. Ansible and Vagrant A love story AnsibleFest London, 2015 http://pixabay.com/get/f72f42c0c92d9ee12bc3/1422473642/cloud-600224_1920.jpg @Sgoettschkes
2. http://pixabay.com/get/5c603ff58720250803c9/1422648022/forest-438432_1280.jpg
3. http://pixabay.com/get/3489448873097c5aa562/1422648090/apple-195628_1280.jpg
4. “It works on my machine”
5. “It’s all in SETUP.md”
6. Enter vagrant
7. Building blocks Configuration + Provider + Base Boxes + Provisioner + Plugins = Vagrant http://pixabay.com/static/uploads/photo/2010/12/10/08/salad-1105_640.jpg
8. Configuration Vagrant.configure(2) do |config| config.vm.box = "Sgoettschkes/debian7-ansible" config.vm.network "private_network", ip: "127.0.0.101" config.vm.synced_folder "../", "/srv/workspace" config.vm.provision "ansible" do |ansible| ansible.playbook = "playbook.yml" end end
9. Providers
10. Base Boxes Base Boxes • Image from VM • Provider-specific • Distribution through ◦ HTTP ◦ “Atlas” http://upload.wikimedia.org/wikipedia/commons/9/91/Shipping_containers_at_Clyde.jpg
11. Provisioners
12. Provisioners
13. Plugins # AWS provider $ vagrant plugin install vagrant-aws # Boxen provisioner $ vagrant plugin install ventriloquist # Executing on the host $ vagrant plugin install vagrant-hostmanager # Executing on the guest $ vagrant plugin install vagrant-camera
14. Synced folders http://upload.wikimedia.org/wikipedia/commons/5/5d/BalticServers_data_center.jpg # Vagrantfile config.vm.synced_folder "~/local/path/to/project", # on host "/opt/project" # on guest
15. SSH http://pixabay.com/static/uploads/photo/2013/04/08/22/48/tunnel-101976_640.jpg $ vagrant ssh # or $ ssh -p 2222 vagrant@localhost # with password “vagrant”
16. Example $ tree . |-- .git |-- .vagrant |-- playbook.yml |-- Vagrantfile
17. Example $ cat Vagrantfile Vagrant.configure(2) do |config| config.vm.box = "Sgoettschkes/debian7-ansible" config.vm.network "private_network", ip: "127.0.0.101" config.vm.provision "ansible" do |ansible| ansible.playbook = "playbook.yml" end end
18. Example $ cat Vagrantfile Vagrant.configure(2) do |config| config.vm.box = "Sgoettschkes/debian7-ansible" config.vm.network "private_network", ip: "127.0.0.101" config.vm.provision "ansible" do |ansible| ansible.playbook = "playbook.yml" end end
19. Example $ cat Vagrantfile Vagrant.configure(2) do |config| config.vm.box = "Sgoettschkes/debian7-ansible" config.vm.network "private_network", ip: "127.0.0.101" config.vm.provision "ansible" do |ansible| ansible.playbook = "playbook.yml" end end
20. Example $ cat Vagrantfile Vagrant.configure(2) do |config| config.vm.box = "Sgoettschkes/debian7-ansible" config.vm.network "private_network", ip: "127.0.0.101" config.vm.provision "ansible" do |ansible| ansible.playbook = "playbook.yml" end end
21. Example $ cat playbook.yml --- hosts: all tasks: - name: update apt apt: update_cache=yes - name: install git apt: pkg=git state=latest
22. More dependencies, anyone? https://www.dropbox.com/s/xdeyi95buvofdxy/169H.jpg
23. Better example $ tree . |-- .git |-- .vagrant |-- hosts |-- playbook.yml |-- Vagrantfile
24. Better example $ tree . |-- .git |-- .vagrant |-- hosts |-- playbook.yml |-- Vagrantfile
25. Better example $ cat hosts localhost ansible_connection=local
26. Better example Vagrant.configure(2) do |config| # ... config.vm.provision "shell", inline: "cp /vagrant/hosts /etc/ansible/hosts" if Vagrant.has_plugin?("vagrant-ansible-local”) config.vm.provision "ansibleLocal", playbook: "playbook.yml" else config.vm.provision "shell", inline: "ansible-playbook /vagrant/playbook.yml" end
27. Better example Vagrant.configure(2) do |config| # ... config.vm.provision "shell", inline: "cp /vagrant/hosts /etc/ansible/hosts" if Vagrant.has_plugin?("vagrant-ansible-local”) config.vm.provision "ansibleLocal", playbook: "playbook.yml" else config.vm.provision "shell", inline: "ansible-playbook /vagrant/playbook.yml" end
28. Better example Vagrant.configure(2) do |config| # ... config.vm.provision "shell", inline: "cp /vagrant/hosts /etc/ansible/hosts" if Vagrant.has_plugin?("vagrant-ansible-local”) config.vm.provision "ansibleLocal", playbook: "playbook.yml" else config.vm.provision "shell", inline: "ansible-playbook /vagrant/playbook.yml" end
29. Better example Vagrant.configure(2) do |config| # ... config.vm.provision "shell", inline: "cp /vagrant/hosts /etc/ansible/hosts" if Vagrant.has_plugin?("vagrant-ansible-local”) config.vm.provision "ansibleLocal", playbook: "playbook.yml" else config.vm.provision "shell", inline: "ansible-playbook /vagrant/playbook.yml" end
30. http://freehddesktopwallpaper.info/wp-content/uploads/2013/06/Blue-Flowers-hd-Wallpapers.jpg Basic workflow
31. Basic workflow $ vagrant init Sgoettschkes/debian7-ansible $ vagrant up # box is booting $ vagrant ssh # It’s actually a normal, headless VM! $ exit
32. Basic workflow $ vim Vagrantfile # change config # add provisioners and so on $ git init $ git commit -Am ‘I am using Vagrant now!’ # Keep the Vagrantfile and files needed for provisioning # in git (or any other scm) to share with others
33. Basic workflow $ git clone git@github.com:awesomecompany/awesomeVm.git $ cd awesomeVm && vagrant up # VM is setup the same as on your co-workers machine # You can now work on your project
34. Basic workflow # Co-worker updated Vagrantfile/provisioning files $ git pull --rebase $ vagrant provision # VM is up to date again
35. Basic workflow # You wanna change some Vagrant related stuff $ vim Vagrantfile # Change it! $ vim playbook.yml # Change something here as well, maybe? $ vagrant provision # Your box is up to date again $ git commit -am ‘Incredible changes’ && git push
36. http://www.gratisography.com/pictures/114_1.jpg Playbook testing?
37. Testing playbooks Vagrant.configure(2) do |config| config.vm.box = "Sgoettschkes/debian7" config.vm.define "web1" do |web1| web1.vm.network "private_network", ip: "192.168.1.150" end config.vm.define "db1" do |db1| db.vm.network "private_network", ip: "192.168.1.151" end end
38. Testing playbooks Vagrant.configure(2) do |config| config.vm.box = "Sgoettschkes/debian7" config.vm.define "web1" do |web1| web1.vm.network "private_network", ip: "192.168.1.150" end config.vm.define "db1" do |db1| db.vm.network "private_network", ip: "192.168.1.151" end end
39. Testing playbooks Vagrant.configure(2) do |config| config.vm.box = "Sgoettschkes/debian7" config.vm.define "web1" do |web1| web1.vm.network "private_network", ip: "192.168.1.150" end config.vm.define "db1" do |db1| db.vm.network "private_network", ip: "192.168.1.151" end end
40. Testing playbooks $ cat testing [webservers] 192.168.1.150 ansible_ssh_user=vagrant ansible_ssh_private_key=path/to/key [dbservers] 192.168.1.151 ansible_ssh_user=vagrant ansible_ssh_private_key=path/to/key
41. Testing playbooks $ cat testing [webservers] 192.168.1.150 ansible_ssh_user=vagrant ansible_ssh_private_key=path/to/key [dbservers] 192.168.1.151 ansible_ssh_user=vagrant ansible_ssh_private_key=path/to/key
42. Testing playbooks $ cat testing [webservers] 192.168.1.150 ansible_ssh_user=vagrant ansible_ssh_private_key=path/to/key [dbservers] 192.168.1.151 ansible_ssh_user=vagrant ansible_ssh_private_key=path/to/key
43. Testing playbooks $ vagrant destroy --force && vagrant up # Now you have freshly setup machines # Run your playbooks like you would for staging/production $ ansible-playbook -i testing site.yml # Maybe run a testscript $ ./test_setup.sh
44. https://www.dropbox.com/s/mfmusz1qjotilbs/2H.jpg Best practices
45. Base Boxes The fewer, the better
46. Provisioning Idempotent
47. Provisioning One step
48. Provisioning # Bad: $ vagrant up $ install software x $ run script y $ create z
49. Provisioning # Good: $ vagrant up
50. Vms per Developer The fewer, the better (again)
51. http://nos.twnsnd.co/image/108652898544 What else is there?
52. Vagrant share $ vagrant share # Your VM is now accessible through a public url # You can go back doing awesome work!
53. Vagrant push config.push.define "ftp" do |push| push.dir = "/srv/workspace" push.host = "ftp.awesomeCompany.com" end
54. Vagrant push config.push.define "local-exec" do |push| push.script = "deploy.sh" end
55. Vagrant “Development environments made easy” http://fc02.deviantart.net/fs50/i/2009/315/4/c/Tweaked_toy_airplane_by_afd.jpg
56. https://www.dropbox.com/s/6z5aiwa8l09g2pa/86H.jpg