notes

# env vars
lookup('env', 'OS_PASSWORD') 

Built in facts
Welcome to host {{ansible_hostname}}!
https://serverfault.com/questions/667927/how-do-i-print-the-current-hostname-of-a-host-in-ansible


# cheat sheet
https://www.digitalocean.com/community/tutorials/how-to-use-ansible-cheat-sheet-guide

# install a set of packages
- name: install a set of packages
  yum: name={{ item }} state=present
  with_items:
    - httpd
    - php
    - git
    - mysql-client

# files and templates
- name: copy a file
  copy: src=files/ntp.conf dest=/etc/ntp/ntp.conf
  owner=root group=root mode=0644

- name: copy ansible inventory file to client
  template: src=templates/motd
                  dest=/etc/motd
                  owner=root group=root mode=0644
                  

# file: /srv/motd.j2
Welcome, I am templated with a value of a={{ a }}, b={{ b }}, and c={{ c }}
Which could be executed just like this:

ansible webserver -m setup
ansible webserver -m template -a "src=/tmp/motd.j2 dest=/etc/motd"

So, with the template above (motd.j2), this would result in the following data being 
written to /etc/motd for system ‘foo’:
 
Welcome, I am templated with a value of a=2, b=3, and c=4



# simple playbook
---
- name: install and start apache
     hosts: webservers
     user: root

 tasks:
 - name: install httpd
    yum: name=httpd state=present

 - name: write the apache config file
    template: src=templates/httpd.j2 dest=/etc/httpd/httpd.conf
    notify:
    - restart apache

 - name: start httpd
    service: name=httpd state=running