Ansible for Developers 101

apt.yml

- apt:
    name: "apache2"
    state: present

handlers.yml

tasks:
    - name: add cache dir
      file:
        path: /opt/cache
        state: directory
    
    - name: install nginx
      yum:
        name: nginx
        state: latest
    notify: restart nginx
    
handlers:
    - name: restart nginx
      service:
        name: nginx
        state: restarted

hosts.ini

[control]
control ansible_host=10.45.21.2

[web]
node1   ansible_host=10.43.21.0
node2   ansible_host=10.43.21.1
node3   ansible_host=10.43.21.2
node4   ansible_host=10.43.21.3

[haproxy]
haproxy ansible_host=10.43.20.0

[all:vars]
ansible_user=vagrant
ansible_ssh_private_key_file=~/.vagrant.d/private_key

[web:vars]
ansible_user=dario

loop1.yml

- name: add several users
  user:
    name: "{{ item }}"
    state: present
    groups: "wheel"
  loop:
     - testuser1
     - testuser2

loop2.yml

- name: add several users
  user:
    name: "{{ item.name }}"
    state: present
    groups: "{{ item.groups }}"
  loop:
    - { name: 'testuser1', groups: 'wheel' }
    - { name: 'testuser2', groups: 'root' }

playbook1.yml

---
- name: install and start apache
  hosts: web
  vars:
    http_port: 80
    max_clients: 200
  remote_user: root

  tasks:
  - name: install httpd
    yum: pkg=httpd state=latest
  - name: write the apache config file
    template: src=//localhost:1313/srv/httpd.j2 dest=/etc/httpd.conf
  - name: start httpd
    service: name=http state=started

playbook2.yml

---
- hosts: webservers
  roles:
    - common
    - webservers

tasks.yml

tasks:
    - name: add cache dir
      file:
        path: /opt/cache
        state: directory
    
    - name: install nginx
      yum:
        name: nginx
        state: latest
    
    - name: restart nginx
      service:
        name: nginx
        state: restarted

yum.yml

- yum:
    name: "httpd"
    state: present