Tutorial over G-Cloud infrastructure

Repo :: github-link

Hello people, in this lab, we will create a terraform configuration with a module to automate the deployment of Google Cloud infrastructure. Specifically, you deploy one auto-mode network with a firewall rule and two VM instances, as shown in this diagram:

Tasks --

Create a configuration for an auto-mode network.
Create a configuration for a firewall rule.
Create a module for VM instances.
Create and deploy a configuration.
Verify the deployment of a configuration.

Task 1. Set up Terraform and Cloud Shell

Terraform is now integrated into Cloud Shell. Verify which version is installed.

In the Cloud Console, click Activate Cloud Shell ().
If prompted, click Continue.
To confirm that Terraform is installed, run the following command:

terraform --version

The output should look like this:
1. 1. To create a directory for your Terraform configuration, run the following command:

        mkdir tfinfra

Create the file into tfinfra directory named asprovider.tf:

        provider "google" {}

To initialize Terraform, run the following command:
```
 cd tfinfra
 terraform init
```
The output should look like this:

Task 2. Create mynetwork and its resources

Create a new configuration, and define mynetwork.tf, which includes,

1 - firewall rule to allow HTTP, SSH, RDP, and ICMP traffic on mynetwork.

2 - the VM instances by creating a VM instance module

3 - Create a variables.tf file and define variables according to below tf configuration,

        #variables.tf
        variable "instance_name" {}
        variable "instance_zone" {}
        variable "instance_type" {
          default = "e2-micro"
          }
        variable "instance_network" {}

        #mynetwork.tf
        # Create the mynetwork network
        resource "google_compute_network" "mynetwork" {
          name = "mynetwork"
          # RESOURCE properties go here
          auto_create_subnetworks = "true"
        }
        # Add a firewall rule to allow HTTP, SSH, RDP and ICMP traffic on mynetwork
        resource "google_compute_firewall" "mynetwork-allow-http-ssh-rdp-icmp" {
          name = "mynetwork-allow-http-ssh-rdp-icmp"
          # RESOURCE properties go here
          network = google_compute_network.mynetwork.self_link
          allow {
            protocol = "tcp"
            ports    = ["22", "80", "3389"]
          }
          allow {
            protocol = "icmp"
          }
          source_ranges = ["0.0.0.0/0"]
        }
        resource "google_compute_instance" "vm_instance" {
          name         = "mynet-us-vm"
          zone         = "us-central1-a"
          machine_type = var.instance_type
          boot_disk {
            initialize_params {
              image = "debian-cloud/debian-11"
            }
          }
          network_interface {
            network = google_compute_network.mynetwork.self_link
            access_config {
              # Allocate a one-to-one NAT IP to the instance
            }
          }
        }

        resource "google_compute_instance" "vm_instance1" {
          name         = "mynet-eu-vm"
          zone         = "europe-west1-d"
          machine_type = var.instance_type
          boot_disk {
            initialize_params {
              image = "debian-cloud/debian-11"
            }
          }
          network_interface {
            network = google_compute_network.mynetwork.self_link
            access_config {
              # Allocate a one-to-one NAT IP to the instance
            }
          }
        }

Task 3. Apply to terraform and trigger

To initialize Terraform, run the following command:

To create an execution plan, run the following command:

To apply the desired changes, run the following command:

terraform apply

To confirm the planned actions, type:

yes

The output should look like this:

Task 4. Verify your deployment

Verify your network in the Cloud Console

In the Cloud Console, on the Navigation menu (), click VPC network > VPC networks.
View the mynetwork VPC network with a subnetwork in every region.
On the Navigation menu, click VPC network > Firewall.
Sort the firewall rules by Network.
View the mynetwork-allow-http-ssh-rdp-icmp firewall rule for mynetwork.

Verify your VM instances in the Cloud Console

On the Navigation menu (), click Compute Engine > VM instances.
View the mynet-us-vm and mynet-eu-vm instances.
Note the internal IP address for mynet-eu-vm.
For mynet-us-vm, click SSH to launch a terminal and connect.
To test connectivity to mynet-eu-vm's internal IP address, run the following command in the SSH terminal (replacing mynet-eu-vm's internal IP address with the value noted earlier):

 ping -c 3 <Enter mynet-eu-vm's internal IP here>

Thank you for looking at this article, please give a thumbsup if it helped you.

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