5 - Ansible playbook

2023-12-10 09:26:57

Offical introduction to playbook
You can get official reference of playbook from below url:
https://docs.ansible.com/ansible/latest/user_guide/playbooks_intro.html#playbook-syntax

Key element of playbook

Task	The management activities we are going to perform for remote servers
Variables	Variables we can use in the playbook YAML file, including user defined variables, built-in variables, and also variables defined in Inventory file
Template	Template file with a syntax, like some configuration files etc.
Handlers	Handlers working with notify, while the activities match a condition, then it's trigger the handler to perform some specific action
Tags	Mark the task in playbook with a tag, while we execute the playbook, we can specify which task to be executed by specify the tag name, like: ansible-playbook hosts.yml --tags="only"

Ansible playbook syntax
Below is an example of the playbook should be looks like:

---
- hosts: webservers
  remote_user: root
  vars:
    filename: readme.txt

  tasks:
    - name: create readme file
      file: name=/tmp/{{filename}} state=touch
    - name: create new user
      user: name=wayne03 state=present shell=/bin/bash

By execute above playbook, save above content to file named test.yml, you can run below command:

ansible-playbook test.yml

5 - Ansible playbook

Then switch to shell-node1, verify if the readme.txt and user wayne03 been created or not:
5 - Ansible playbook

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