Include tasks and Variables in playbook

Purpose of this playbook is to demonstrate how include tasks defined in a different file.

And how to define variables within the playbook

"include" is the key word to include tasks file

"vars" is the key word to defined variables in the playbook.

YML file to define tasks for playbook.

# copy from here:

# Only the tasks are defined in this file. 

- name: Install Web package

  yum:

    name:

      - "{{ web_package }}"

      - "{{ db_package }}"

    state: latest

- name: Start both DB and Web service

  service:

    name: "{{ item }}"

    state: started

    enabled: yes

  with_items:

    - "{{ web_service }}"

    - "{{ db_service }}"

Playbook to import above task file.

# hosts and tasks are the key words in playbook:  

# copy from here:

---

- name: Install Web and DB package and start services using variables

  hosts: node11

  vars:  # define list of packages

    - web_package: httpd

    - web_service: httpd

    - db_package: mariadb-server

    - db_service: mariadb

  tasks:

  - name: Install requrie packages

    include: envirenment.yml   # Import tasks from above yml file.

    register: output

  - name: Display the output

    debug:

      var: output

...