Blue-green infrastructure pattern in Terraform - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define the active environment variable for blue-green deployment.

Terraform

variable "active_environment" {
  type    = string
  default = "[1]"
}

Drag options to blanks, or click blank then click option'

Ablue

Bgreen

Cred

Dyellow

Attempts:

3 left

💡 Hint

Common Mistakes

Setting the default to an undefined environment like "red" or "yellow".

Leaving the default empty.

The default active environment is set to "blue" to start the blue-green deployment.

2fill in blank

medium

Complete the code to create a resource group for the green environment.

Terraform

resource "azurerm_resource_group" "green" {
  name     = "rg-[1]"
  location = var.location
}

Drag options to blanks, or click blank then click option'

Aprod

Bgreen

Cblue

Dtest

Attempts:

3 left

💡 Hint

Common Mistakes

Using "blue" instead of "green" for the green environment resource group.

Using unrelated names like "prod" or "test".

The resource group name includes "green" to represent the green environment.

3fill in blank

hard

Fix the error in the code to select the inactive environment correctly.

Terraform

locals {
  inactive_environment = var.active_environment == "blue" ? "[1]" : "blue"
}

Drag options to blanks, or click blank then click option'

Agreen

Bblue

Cprod

Dtest

Attempts:

3 left

💡 Hint

Common Mistakes

Setting inactive environment to "blue" when active is "blue".

Using unrelated environment names.

If the active environment is "blue", the inactive one should be "green" for blue-green deployment.

4fill in blank

hard

Fill both blanks to define the load balancer backend pool for the active environment.

Terraform

resource "azurerm_lb_backend_address_pool" "active_pool" {
  name                = "lb-backend-[1]"
  resource_group_name = azurerm_resource_group.[2].name
  loadbalancer_id     = azurerm_lb.main.id
}

Drag options to blanks, or click blank then click option'

Aactive_environment

Bgreen

Cblue

Dinactive_environment

Attempts:

3 left

💡 Hint

Common Mistakes

Using inactive environment name in the backend pool.

Referencing the resource group incorrectly.

The backend pool name uses the active environment name ("blue"), and the resource group name is referenced from the active environment variable.

5fill in blank

hard

Fill all three blanks to switch traffic to the inactive environment by updating the active environment variable and resource group references.

Terraform

variable "active_environment" {
  default = "[1]"
}

resource "azurerm_resource_group" "[2]" {
  name     = "rg-[3]"
  location = var.location
}

Drag options to blanks, or click blank then click option'

Agreen

Bblue

Attempts:

3 left

💡 Hint

Common Mistakes

Not updating the active environment variable.

Mismatching resource group names.

To switch traffic, set the active environment variable to "green" and create the resource group for "green" environment.