README.md

Odcinek 4 - Co oznacza idempotentny, deklaratywny, imperatywny ?

Materiały:

• The Zen of Ansible - Declarative is better than imperative – most of the time
• Provisioners Without a Resource
• Imperative vs Declarative IaC: Ansible and Terraform
• Declarative vs. Imperative Infrastructure As Code

Przykłady:

• Ansible - deklaratywny moduł:

- name: Ensure nginx is installed
  package:
    name: nginx
    state: present

• Ansible - imperatywny moduł:

- name: Create a directory
  command: mkdir /path/to/directory

• Terraform - deklaratywny zasób:

resource "aws_instance" "this" {
  ami           = "ami-12345678901234567"
  instance_type = "t2.micro"
}

• Terraform - imperatywny zasób:

resource "null_resource" "this" {
  provisioner "local-exec" {
    command = "echo 'This is a provisioner script'"
  }

  depends_on = [aws_instance.this]
}