Ansible is a powerful open-source automation platform that simplifies IT infrastructure management, application deployment, and configuration management. Using simple YAML-based playbooks and an agentless architecture, Ansible enables infrastructure as code, making complex multi-tier deployments repeatable and consistent across environments.
📑 Table of Contents
Key Features
- Agentless – No software required on managed nodes
- YAML Playbooks – Human-readable automation scripts
- Idempotent – Safe to run multiple times
- Extensive Modules – Thousands of built-in modules
- Inventory Management – Dynamic and static inventory support
- Roles – Reusable automation components
- Ansible Galaxy – Community-shared roles and collections
Installation
# Using pip (recommended)
pip install ansible
# Debian/Ubuntu
sudo apt install ansible
# RHEL/CentOS/Fedora
sudo dnf install ansible
# Verify installation
ansible --version
Basic Playbook Example
# playbook.yml
---
- name: Configure web servers
hosts: webservers
become: yes
tasks:
- name: Install nginx
apt:
name: nginx
state: present
- name: Start nginx service
service:
name: nginx
state: started
enabled: yes
# Run playbook
ansible-playbook -i inventory playbook.yml
Use Cases
Ansible is essential for configuration management, application deployment, cloud provisioning, security compliance, and orchestrating complex workflows.
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