Lab Information
To ensure proper resource provisioning order, the DevOps team wants to explicitly define the dependency between an AWS VPC and a Subnet. The objective is to create a VPC and then a Subnet that explicitly depends on it using Terraform's depends_on argument.
Please complete the following tasks:
Create a VPC named xfusion-vpc.
Create a Subnet named xfusion-subnet.
Ensure the Subnet uses the depends_on argument to explicitly depend on the VPC resource.
Create the main.tf file (do not create a separate .tf file) to provision a VPC and Subnet.
Use variables.tf, define the following variables:
KKE_VPC_NAME for the VPC name.
KKE_SUBNET_NAME for the Subnet name.
Use terraform.tfvars to input the names of the VPC and subnet.
In outputs.tf, output the following:
kke_vpc_name: The name of the VPC.
kke_subnet_name: The name of the Subnet.
Lab Solutions
✅ Step 1: Create the required Terraform files
Make sure you are in the lab working directory.
1️⃣ main.tf
Creates the VPC and Subnet, with an explicit dependency using depends_on.
resource "aws_vpc" "xfusion_vpc" {
cidr_block = "10.0.0.0/16"
tags = {
Name = var.KKE_VPC_NAME
}
}
resource "aws_subnet" "xfusion_subnet" {
vpc_id = aws_vpc.xfusion_vpc.id
cidr_block = "10.0.1.0/24"
depends_on = [
aws_vpc.xfusion_vpc
]
tags = {
Name = var.KKE_SUBNET_NAME
}
}
2️⃣ variables.tf
Defines variables for VPC and Subnet names.
variable "KKE_VPC_NAME" {
description = "Name of the VPC"
type = string
}
variable "KKE_SUBNET_NAME" {
description = "Name of the Subnet"
type = string
}
3️⃣ terraform.tfvars
Provides values for the variables.
KKE_VPC_NAME = "xfusion-vpc"
KKE_SUBNET_NAME = "xfusion-subnet"
4️⃣ outputs.tf
Outputs the VPC and Subnet names.
output "kke_vpc_name" {
value = var.KKE_VPC_NAME
}
output "kke_subnet_name" {
value = var.KKE_SUBNET_NAME
}
✅ Step 2: Initialize Terraform (MANDATORY in KodeKloud)
Run:
terraform init
✔ Downloads the AWS provider
✔ Initializes backend
✔ Required for the lab to proceed
✅ Step 3: Validate configuration (optional but recommended)
Run:
terraform validate
You should see:
Success! The configuration is valid.
✅ Step 4: Apply the Terraform configuration (REQUIRED to finish lab)
terraform apply
When prompted:
Do you want to perform these actions?
Type:
yes
✅ Step 5: Verify Outputs (Lab Validation)
After apply completes, you should see:
Outputs:
kke_vpc_name = "xfusion-vpc"
kke_subnet_name = "xfusion-subnet"
This confirms:
VPC was created
Subnet was created
Dependency was honored
Outputs are correct
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