Ansible Pilot

Ansible terminology - What is an Ansible Playbook?

A step-by-step guide inside the Ansible Playbook anatomy: play, tasks, modules, conditional, loop, handler, variable, list.

October 20, 2022
Access the Complete Video Course and Learn Quick Ansible by 200+ Practical Lessons

What is an Ansible Playbook?

I will show you a live demo with some simple Ansible code. I’m Luca Berton, and welcome to today’s episode of Ansible Pilot.

Ansible Playbook

The Ansible Playbook is the blueprint for your automation. The Ansible Playbook enables you to execute any, again again, operation in a specified order. It’s like a recipe book for someone who likes to cook a cake. Every ingredient needs to be added in a specific order at a particular moment of the execution. The code is human-readable in YAML format, a well-known easy-to-read coding format. Every line of coding is the Ansible language that is changed a little bit yearly, but the principles are always the same. Like all programming languages, you can declare variables, include other files, execute actions on conditions, and repeat with loops. Other particular actions, called handlers, execute only when another task is performed. You can execute your Ansible Playbook using the ansible-playbook command line utility included in any ansible installation. When the execution is successful, you obtain a green result, otherwise a failure with a relative error.

The Best Resources For Ansible

Video Course

Books

demo

A step-by-step guide inside the Ansible Playbook anatomy.

code

---
- name: example playbook
  hosts: all
  vars:
    myvar: "example text"
    mybool: true
    cities:
      - New York
      - Paris
  tasks:
    - name: print var
      ansible.builtin.debug:
        var: myvar
      notify: reload
    - name: condition
      ansible.builtin.debug:
        msg: "example condition"
      when: mybool
    - name: print cities
      ansible.builtin.debug:
        var: item
      loop: "{{ cities }}"
   handlers:
    - name: reload
      ansible.builtin.debug:
        msg: "example handler"

execution

$ ansible-playbook -i ../vmware/inventory example.yml
PLAY [example playbook] *****************************************************************
TASK [Gathering Facts] ******************************************************************
[WARNING]: Platform darwin on host localhost is using the discovered Python interpreter
at /opt/homebrew/bin/python3.10, but future installation of another Python interpreter
could change the meaning of that path. See https://docs.ansible.com/ansible-
core/2.13/reference_appendices/interpreter_discovery.html for more information.
ok: [localhost]
TASK [print var] ************************************************************************
ok: [localhost] => {
    "myvar": "example text"
}
TASK [condition] ************************************************************************
ok: [localhost] => {
    "msg": "example condition"
}
TASK [print cities] *********************************************************************
ok: [localhost] => (item=New York) => {
    "ansible_loop_var": "item",
    "item": "New York"
}
ok: [localhost] => (item=Paris) => {
    "ansible_loop_var": "item",
    "item": "Paris"
}
PLAY RECAP ******************************************************************************
localhost                  : ok=4    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

Recap

Now you know what an Ansible Playbook is and how to use it. You know how to use it based on your use case.

Subscribe to the YouTube channel, Medium, Website, Twitter, and Substack to not miss the next episode of the Ansible Pilot.

Academy

Learn the Ansible automation technology with some real-life examples in my

My book Ansible By Examples: 200+ Automation Examples For Linux and Windows System Administrator and DevOps

BUY the Complete PDF BOOK to easily Copy and Paste the 200+ Ansible code

Want to keep this project going? Please donate

Access the Complete Video Course and Learn Quick Ansible by 200+ Practical Lessons
Trustpilot
Follow me

Subscribe not to miss any new releases

FREE Top 10 Best Practices

Top 10 Best Practices of Ansible Automation: save time, reduce errors and stress