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LAB Automating Infrastructure on Google Cloud with Terraform: Challenge Lab
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LAB Automating Infrastructure on Google Cloud with Terraform: Challenge Lab
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T1. Create the configuration files
Run in Cloud Shell
touch main.tf
touch variables.tf
mkdir modules
cd modules
mkdir instances
cd instances
touch instances.tf
touch outputs.tf
touch variables.tf
cd ..
mkdir storage
cd storage
touch storage.tf
touch outputs.tf
touch variables.tf
cd
Add the following to the each variables.tf file, and fill in the GCP Project ID:
variable "region" {
default = "us-central1"
}
variable "zone" {
default = "us-central1-a"
}
variable "project_id" {
default = "<REPLACE PROJECT ID>"
}
Add the following to the main.tf file :
terraform {
required_providers {
google = {
source = "hashicorp/google"
version = "4.53.0"
}
}
}
provider "google" {
project = var.project_id
region = var.region
zone = var.zone
}
module "instances" {
source = "./modules/instances"
}
Run terraform init in Cloud Shell in the root directory to initialize terraform.
If you are getting error after running above command just try this run terraform init -migrate -state command first
-----------------------------------------------------------------------------------------------------------------------------------------------------------
Task 2. Import infrastructure
Next, navigate to modules/instances/instances.tf. Copy the following configuration into the file:
resource "google_compute_instance" "tf-instance-1" {
name = "tf-instance-1"
machine_type = "n1-standard-1"
zone = var.zone
boot_disk {
initialize_params {
image = "debian-cloud/debian-10"
}
}
network_interface {
network = "default"
}
metadata_startup_script = <<-EOT
#!/bin/bash
EOT
allow_stopping_for_update = true
}
resource "google_compute_instance" "tf-instance-2" {
name = "tf-instance-2"
machine_type = "n1-standard-1"
zone = var.zone
boot_disk {
initialize_params {
image = "debian-cloud/debian-10"
}
}
network_interface {
network = "default"
}
metadata_startup_script = <<-EOT
#!/bin/bash
EOT
allow_stopping_for_update = true
}
Navigate to Compute Engine > VM Instances. Click on tf-instance-1. Copy the Instance ID
Navigate to Compute Engine > VM Instances. Click on tf-instance-2. Copy the Instance ID
Run in cloud shell
terraform import module.instances.google_compute_instance.tf-instance-1 <Instance ID - 1>
terraform import module.instances.google_compute_instance.tf-instance-2 <Instance ID - 2>
terraform plan
terraform apply
-----------------------------------------------------------------------------------------------------------------------------------------------------------
Task 3. Configure a remote backend
Add the following code to the modules/storage/storage.tf file
resource "google_storage_bucket" "storage-bucket" {
name = "<YOUR-BUCKET>"
location = "US"
force_destroy = true
uniform_bucket_level_access = true
}
Next, add the following to the main.tf file:
module "storage" {
source = "./modules/storage"
}
Run cloud shell :
terraform init
terraform apply
Next, update the main.tf
terraform {
backend "gcs" {
bucket = "<REPLACE YOUR BUCKET>"
prefix = "terraform/state"
}
required_providers {
google = {
source = "hashicorp/google"
version = "4.53.0"
}
}
}
terraform init
-----------------------------------------------------------------------------------------------------------------------------------------------------------
Task 4. Modify and update infrastructure
navigate to modules/instances/instances.tf modify tf-instance-1 and tf-instance-2
add tf-instance-3
resource "google_compute_instance" "Instance Name" {
name = "Instance Name"
machine_type = "n1-standard-2"
zone = var.zone
boot_disk {
initialize_params {
image = "debian-cloud/debian-10"
}
}
network_interface {
network = "default"
}
metadata_startup_script = <<-EOT
#!/bin/bash
EOT
allow_stopping_for_update = true
}
Run cloud shell :
terraform init
terraform apply
-----------------------------------------------------------------------------------------------------------------------------------------------------------
Task 5. Taint and destroy resources
terraform taint module.instances.google_compute_instance.Instance_name
terraform plan
terraform apply
navigate to modules/instances/instances.tf remove tf-instance-3
terraform apply
-----------------------------------------------------------------------------------------------------------------------------------------------------------
Task 6. Use a module from the Registry
In the Terraform Registry, browse to the Network Module.
Copy and paste the following into the main.tf
module "vpc" {
source = "terraform-google-modules/network/google"
version = "~> 6.0.0"
project_id = "PROJECT_ID"
network_name = "VPC_NAME"
routing_mode = "GLOBAL"
subnets = [
{
subnet_name = "subnet-01"
subnet_ip = "10.10.10.0/24"
subnet_region = "us-central1"
},
{
subnet_name = "subnet-02"
subnet_ip = "10.10.20.0/24"
subnet_region = "us-central1"
subnet_private_access = "true"
subnet_flow_logs = "true"
description = "This subnet has a description"
},
]
}
run cloud shell :
terraform init
terraform apply
-----------------------------------------------------------------------------------------------------------------------------------------------------------
Next, navigate to the instances.tf file and update the configuration resources to connect tf-instance-1 to subnet-01 and tf-instance-2 to subnet-02
resource "google_compute_instance" "tf-instance-1"{
name = "tf-instance-1"
machine_type = "n1-standard-2"
zone = var.zone
boot_disk {
initialize_params {
image = "debian-cloud/debian-10"
}
}
network_interface {
network = "VPC_NAME"
subnetwork = "subnet-01"
}
metadata_startup_script = <<-EOT
#!/bin/bash
EOT
allow_stopping_for_update = true
}
resource "google_compute_instance" "tf-instance-2"{
name = "tf-instance-2"
machine_type = "n1-standard-2"
zone = var.zone
boot_disk {
initialize_params {
image = "debian-cloud/debian-10"
}
}
network_interface {
network = "VPC_NAME"
subnetwork = "subnet-02"
}
metadata_startup_script = <<-EOT
#!/bin/bash
EOT
allow_stopping_for_update = true
}
module "vpc" {
source = "terraform-google-modules/network/google"
version = "~> 6.0.0"
project_id = "PROJECT_ID"
network_name = "VPC_NAME"
routing_mode = "GLOBAL"
subnets = [
{
subnet_name = "subnet-01"
subnet_ip = "10.10.10.0/24"
subnet_region = "us-central1"
},
{
subnet_name = "subnet-02"
subnet_ip = "10.10.20.0/24"
subnet_region = "us-central1"
subnet_private_access = "true"
subnet_flow_logs = "true"
description = "This subnet has a description"
},
]
}
run cloud shell :
terraform init
terraform apply
-----------------------------------------------------------------------------------------------------------------------------------------------------------
Task - 6 : Configure a firewall
Add the following resource to the main.tf file and fill in the GCP Project ID:
resource "google_compute_firewall" "tf-firewall"{
name = "tf-firewall"
network = "projects/<PROJECT_ID>/global/networks/VPC_Name"
allow {
protocol = "tcp"
ports = ["80"]
}
source_tags = ["web"]
source_ranges = ["0.0.0.0/0"]
}
run cloud shell :
terraform init
terraform apply