ansible-playbook-creation

name	ansible-playbook-creation
description	To automate server configuration. Use when: Tasks, handlers, and roles; When the specific requirement for Ansible Playbook Creation arises in the project.

Purpose

To automate server configuration.

When to Use

• Tasks, handlers, and roles.
• When the specific requirement for Ansible Playbook Creation arises in the project.

Procedure

1. Inventory Configuration

Define the target hosts in an inventory.ini or inventory.yml file.

[webservers]
web1.example.com ansible_host=192.168.1.10
web2.example.com ansible_host=192.168.1.11

[dbservers]
db1.example.com ansible_host=192.168.1.20

2. Creating a Playbook

Create a site.yml file to define the tasks for each group.

---
- name: Configure Web Servers
  hosts: webservers
  become: yes # Run as root
  vars:
    http_port: 80
    max_clients: 200
  
  tasks:
    - name: Ensure Nginx is installed
      apt:
        name: nginx
        state: present
        update_cache: yes

    - name: Copy Nginx configuration
      template:
        src: templates/nginx.conf.j2
        dest: /etc/nginx/nginx.conf
      notify:
        - Restart Nginx

  handlers:
    - name: Restart Nginx
      service:
        name: nginx
        state: restarted

3. Using Roles for Scalability

Organize playbooks into roles for reusability.

roles/
  common/
    tasks/main.yml
  webserver/
    tasks/main.yml
    templates/nginx.conf.j2
    handlers/main.yml

4. Running the Playbook

Use ansible-playbook to execute the automation.

# Check syntax
ansible-playbook site.yml --syntax-check

# Run the playbook
ansible-playbook -i inventory.ini site.yml

Constraints

• Idempotency: Ensure tasks can run multiple times without changing the result if the system is already in the desired state.
• Security: Use ansible-vault to encrypt sensitive variables (passwords, API keys).
• Modularity: Break large playbooks into smaller roles.

Expected Output

A set of YAML files that automatically configure remote servers to a desired state in a reproducible way.