Скачать или смотреть Terraform vs Ansible

Terraform and Ansible are both popular DevOps tools, but they serve different purposes. Terraform focuses on infrastructure provisioning, managing the creation and management of resources like virtual machines, networks, and storage. Ansible, on the other hand, is primarily for configuration management and application deployment, handling tasks like installing software, configuring services, and automating workflows on existing infrastructure.

Here's a more detailed breakdown:

Terraform:
Infrastructure as Code (IaC):
Terraform allows you to define your infrastructure using code, making it versionable, repeatable, and easier to manage.

Provisioning:
It excels at creating and managing the underlying infrastructure components across various cloud providers and on-premises environments.

Declarative:
You describe the desired state of your infrastructure, and Terraform figures out how to achieve it.

Mutable vs. Immutable:
Terraform can be used for both mutable (making changes to existing resources) and immutable (creating new resources for updates) infrastructure, although it leans towards the latter.

State Management:
Terraform keeps track of the state of your infrastructure, which helps with planning and managing changes.

Ansible:
Configuration Management:
Ansible focuses on configuring and managing the software and services running on your infrastructure.

Application Deployment:
It can deploy applications, manage application configurations, and automate complex workflows.

Procedural:
Ansible uses a more step-by-step approach to configuration, defining the tasks to be performed in a specific order.

Mutable:
Ansible is inherently mutable, meaning it makes changes directly to existing systems.

Idempotent:
Ansible tasks are designed to be idempotent, meaning they can be run multiple times without causing unintended changes.

In essence:
Terraform is your tool for building the house (provisioning the infrastructure), while Ansible is your tool for furnishing and managing the house (configuring and deploying applications).
They can be used together, with Terraform creating the infrastructure and Ansible configuring it, or they can be used independently based on your specific needs.

Example:
Imagine you need a new web server.

Terraform
would be used to provision the virtual machine, storage, and network settings for that server.

Ansible
would then be used to install the web server software (like Apache or Nginx), configure it to serve your website, and set up any necessary security rules.