Getting Started with Infrastructure Automation

Getting Started with Infrastructure Automation

A practical guide to automating your infrastructure with Ansible and Terraform

Infrastructure automation is the foundation of reliable, repeatable deployments. In this guide, we walk through the fundamentals of using Ansible and Terraform together to manage your server infrastructure.

Why Automate?

Manual server configuration is error-prone, slow, and difficult to reproduce. With automation:

  • Consistency — Every server is configured identically
  • Speed — Deploy changes across hundreds of servers in minutes
  • Documentation — Your infrastructure is defined in code
  • Recovery — Rebuild any server from scratch quickly

Getting Started with Ansible

Ansible uses simple YAML files called playbooks to define your desired server state. Here’s a basic example:

- hosts: webservers
  tasks:
    - name: Install nginx
      apt:
        name: nginx
        state: present

    - name: Start nginx
      service:
        name: nginx
        state: started
        enabled: yes

Terraform for Infrastructure

While Ansible handles configuration management, Terraform excels at provisioning cloud resources:

resource "hcloud_server" "web" {
  name        = "web-server-1"
  server_type = "cx21"
  image       = "debian-12"
  location    = "nbg1"
}

Combining Both Tools

The best practice is to use Terraform for provisioning and Ansible for configuration:

  1. Terraform creates the servers and networking
  2. Ansible configures the software and services
  3. Both are version-controlled in Git

This separation of concerns keeps your automation clean and maintainable.

Next Steps

Start small — automate one server, then expand. The investment in automation pays dividends as your infrastructure grows.

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