bestpract-playbook.yaml

---
- name: Advanced Playbook Architecture
  hosts: ghosthouse   ## name of group in inventory
  gather_facts: yes # to test try ansible all -m setup -i /path/to/hosts
  connection: local ## pick your connection plugin

  pre_tasks: #<-- these run first, followed by handler calls


  # by default, ansible looks for the rollpath as...
  # roles/ in the the relative local directory
  # /etc/ansible/roles
  # controlled in ansible.cfg
  roles:
          - bootstrap   #<-- this role runs next
          - bootstrap   #<-- by default this will NOT run a second time
                        # to 'fix' make an entry in 'roles/bootstrap/meta/main.yml'
                        # allow_duplicates: true
          - webserver   #<-- this role runs after the first

  tasks:   #<-- this runs after roles, followed by handlers
   - name: Print to the screen
     debug:
           msg: "Example of a task within the tasks section"


   # default to import_role if you are unsure what to use
   # if nothing else, syntax errors in your code will be caught
   # when the playbook is run, instead of when the role is called

   - import_role:         #<-- STATIC(preprocessing)   diff between
           name: nginx    # import and include
                          # is v poorly described by the concepts
                          # governing "dynamic" vs "static" imports

   - include_role:        #<-- DYNAMIC
           name: "webserver-db-{{ webserverhostname | lower }}"


  post_tasks:    #<--- this runs after roles, followed by handlers


  handlers:    #<--- custom handlers called by pre_tasks, tasks, or post_tasks



# consider new plays as 'isolated' from the previous play
---
- name: A second play
  hosts: all
  gather_facts: yes

  tasks:
   - name: Print to the screen
     debug:
             msg: "This is a separate play, but think of it almost like running an entirely new playbook!"