Vagrant Provisioning with Ansible

Talk presented at SunshinePHP 2015

Transcript

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2. whoami
   ●
   (PHP) Developer Advocate at
   DigitalOcean
   ●
   Working with PHP and Linux
   for 10+ years
   ●
   Author of Vagrant Cookbook
   and phansible.com
   

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3. What to expect from this talk
   1. Vagrant: quick recap
   2. Ansible Overview
   3. Writing Playbooks
   4. Standalone Ansible
   

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4. VAGRANT:
   QUICK RECAP
   

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6. ANSIBLE
   OVERVIEW
   

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7. Ansible Overview
   ●
   Simple and Straightforward
   ●
   Human-readable automation
   language
   ●
   Agentless - needs only SSH
   ●
   Extensive list of built-in modules
   ●
   Used by Twitter, Atlassian, EA,
   Spotify, even NASA!
   

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8. Installation
   $ brew update
   $ brew install ansible
   $ sudo apt-add-repository -y ppa:ansible/ansible
   $ sudo apt-get update
   $ sudo apt-get install -y ansible
   Detailed installation instructions: do.co/ansible-docs
   Mac OSX
   Ubuntu
   *Windows is not officially supported as controller machine.
   

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9. A Simple Playbook
   # playbook.yml
   ---
   - hosts: all
   sudo: true
   tasks:
   - name: Update apt-cache
   apt: update_cache=yes
   - name: Install Nginx
   apt: pkg=nginx state=latest
   

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10. Playbook x Manifest
    #Ansible playbook.yml
    ---
    - hosts: all
    sudo: true
    tasks:
    - name: Update apt-cache
    apt: update_cache=yes
    - name: Install Nginx
    apt: pkg=nginx state=latest
    #Puppet default.pp
    exec { 'apt-get update':
    command => '/usr/bin/apt-get update'
    }
    package { 'nginx':
    ensure => "installed",
    require => Exec['apt-get update'],
    }
    

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11. Ansible Output
    

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12. Ansible Output (with cowsay)
    

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13. Ansible as Provisioner
    #Vagrantfile
    Vagrant.configure("2") do |config|
    config.vm.box = "hashicorp/precise64"
    config.vm.provision "ansible" do |ansible|
    ansible.playbook = "playbook.yml"
    end
    end
    

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14. DEMO
    

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15. WRITING
    PLAYBOOKS
    

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16. Variables
    ---
    - hosts: all
    sudo: yes
    vars:
    web_server: nginx
    tasks:
    - name: Install {{ web_server }}
    apt: pkg={{ web_server }} state=latest
    

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17. Facts
    

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18. Conditionals
    - name: "shutdown Debian flavored systems"
    command: /sbin/shutdown -t now
    when: ansible_os_family == "Debian"
    - name: foo is not defined
    fail: msg="Bailing out. this play requires 'bar'"
    when: bar is not defined
    

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19. Conditionals
    - name: Check if PHP is installed
    register: php_install
    command: php -v
    ignore_errors: true
    - name: Do something if PHP is installed
    debug: var=php_install
    when: php_install|success
    - name: Do something if PHP is NOT installed
    debug: msg='PHP is NOT installed!'
    when: php_install|failed
    

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20. Conditionals
    - name: Check if PHP is installed
    register: php_install
    command: php -v
    ignore_errors: true
    - name: Do something if PHP is installed
    debug: var=php_install
    when: php_install|success
    - name: Do something if PHP is NOT installed
    debug: msg='PHP is NOT installed!'
    when: php_install|failed
    

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21. Conditionals
    - name: Check if PHP is installed
    register: php_install
    command: php -v
    ignore_errors: true
    - name: Do something if PHP is installed
    debug: var=php_install
    when: php_install|success
    - name: Do something if PHP is NOT installed
    debug: msg='PHP is NOT installed!'
    when: php_install|failed
    

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24. Looping: with_items
    tasks:
    - name: Install Packages
    apt: pkg={{ item }} state=latest
    with_items:
    - nginx
    - php5-fpm
    - git
    

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25. Looping: with_items
    ---
    - hosts: all
    sudo: yes
    vars:
    sys_packages: [ 'nginx', 'php5-fpm', 'git' ]
    tasks:
    - name: Install Packages
    apt: pkg={{ item }} state=latest
    with_items: sys_packages
    

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26. Templates
    
    ServerAdmin webmaster@localhost
    DocumentRoot {{ doc_root }}
    
    AllowOverride All
    Require all granted
    
    
    

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27. Templates - Usage
    - name: Change default apache vhost
    template: src=templates/apache.tpl
    dest=/etc/apache2/sites-available/000-default.conf
    

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28. Handlers (services)
    ---
    - hosts: all
    sudo: yes
    vars:
    - doc_root: /vagrant
    tasks:
    - name: Change default apache vhost
    template: src=templates/apache.tpl dest=/etc/apache2/sites-
    available/000-default.conf
    notify: restart apache
    handlers:
    - name: restart apache
    service: name=apache2 state=restarted
    

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30. ORGANIZING
    PLAYBOOKS
    

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31. Including Tasks
    ---
    - hosts: all
    sudo: true
    vars:
    doc_root: /vagrant/web
    tasks:
    - include: tasks/init.yml
    - include: tasks/nginxphp.yml
    handlers:
    - name: restart nginx
    service: name=nginx state=restarted
    

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32. Roles
    .
    ├── playbook.yml
    └── roles
    ├── init
    │ └── tasks
    │ └── main.yml
    └── nginxphp
    ├── handlers
    │ └── main.yml
    ├── tasks
    │ └── main.yml
    └── templates
    └── vhost.tpl
    #playbook.yml
    ---
    - hosts: all
    sudo: true
    vars:
    doc_root: /vagrant/web
    roles:
    - init
    - nginxphp
    

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33. STANDALONE
    ANSIBLE
    

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34. Let's talk inventories!
    #/etc/ansible/hosts
    [webservers]
    erikaheidi.com
    dev-human.com
    [testservers]
    178.62.192.53
    95.85.35.248
    178.62.221.111
    

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35. ad-hoc commands
    

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36. ad-hoc commands
    

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37. Running playbooks
    $ ansible-playbook -i staging -l webservers playbook.yml
    $ ansible-playbook playbook.yml --list-hosts
    $ ansible-playbook playbook.yml --list-tasks
    ansible-playbook [-i inventory] [-l group] playbook.yml
    

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38. Vagrant auto-generated inventory
    # Generated by Vagrant
    default ansible_ssh_host=127.0.0.1 ansible_ssh_port=2222
    .vagrant/provisioners/ansible/inventory/vagrant_ansible_inventory
    

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39. Running Ansible on Vagrant vms
    $ ansible -i [inventory] --private-key=[vagrant_priv_key]
    -u vagrant -a "php -v"
    $ ansible-playbook -i [inventory] --private-key=[key] -u
    vagrant demo01.yml
    .vagrant/provisioners/ansible/inventory/vagrant_ansible_inventory
    .vagrant/machines/default/virtualbox/private_key
    

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40. Running Ansible on Vagrant vms
    

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41. RESOURCES
    

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42. phansible.com
    

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43. Vagrant Cookbook - Leanpub
    leanpub.com/vagrantcookbook/c/ssp15
    Also available on Amazon (paperback)
    

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44. QUESTIONS?
    

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45. Ansible Tutorials:
    http://do.co/ansible
    Please rate this talk:
    https://joind.in/13459
    

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