🚀 Ansible Automation

Automate your infrastructure and deployments with Ansible playbooks.

📖 What is Ansible?

Ansible is an open-source automation tool that allows you to configure servers, deploy applications, and manage IT environments using simple, human-readable YAML files called playbooks. It’s agentless and connects via SSH, making it ideal for managing Linux and cloud infrastructure.

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Key features:

Agentless and SSH-based
Uses YAML for configuration (playbooks)
Automates provisioning, configuration, deployment, and orchestration
Supports Linux, macOS, Windows, cloud (AWS, Azure, GCP), Docker, Kubernetes

Example:

Install and configure Nginx, Docker, databases
Deploy apps (Node.js, Django, PHP, etc.)
Manage users, firewalls, cron jobs
Provision servers on AWS/GCP/Azure

🛠 Requirements

Python 3
Ansible control node
SSH access to remote hosts
Sudo privileges on remote hosts

📁 Project Structure

├── inventory.ini # Inventory of remote hosts
├── nginx.yml # Example playbook to install Nginx
└── README.md # This file

📌 SSH KEYs

Step 1: Generate SSH Key on Ansible node

ssh-keygen -t rsa -b 4096 
Press Enter to accept defaults (save in ~/.ssh/id_rsa)

Step 2: Copy Public Key to Remote Host

ssh-copy-id MBaranekTech@192.168.1.10
ssh-copy-id MBaranekTech@192.168.1.11

Step 3: Set Correct Permissions

chmod 700 ~/.ssh
chmod 600 ~/.ssh/authorized_keys

Step 4: Test Passwordless SSH

ssh MBaranekTech@192.168.1.10
ssh MBaranekTech@192.168.1.11

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📚 Test host connectivity

ansible all -i inventory.ini -m ping

🚀 Example Playbook: Install Nginx

- name: Install and start Nginx
  hosts: client
  become: true
  tasks:
    - name: Install Nginx
      apt:
        name: nginx
        state: present

    - name: Start and enable Nginx
      service:
        name: nginx
        state: started
        enabled: true

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📡 Inventory Example (inventory.ini)

[client]
192.168.1.10 ansible_user=MBaranekTech ansible_ssh_private_key_file=~/.ssh/id_rsa
192.168.1.11 ansible_user=MBaranekTech ansible_ssh_private_key_file=~/.ssh/id_rsa

🧪 How to Run a Playbook

ansible-playbook -i inventory.ini nginx-playbook.yml --ask-become-pass