build-infrastructure-with-terraform-on-google-cloud

Build Infrastructure with Terraform on Google Cloud

• Terraform Fundamentals

• Infrastructure as Code with Terraform

• Interact with Terraform Modules

• Manage Terraform State

• Build Infrastructure with Terraform on Google Cloud: Challenge Lab

Terraform Fundamentals

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Infrastructure as Code with Terraform

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Interact with Terraform Modules

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Manage Terraform State

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Build Infrastructure with Terraform on Google Cloud: Challenge Lab

Phase 1: Task 1 - Setup and Initialization You created the directory structure and the initial configuration files.

Bash

1. Create the directory structure

mkdir -p modules/instances modules/storage touch main.tf variables.tf touch modules/instances/instances.tf modules/instances/outputs.tf modules/instances/variables.tf touch modules/storage/storage.tf modules/storage/outputs.tf modules/storage/variables.tf

2. Initialize Terraform for the first time

terraform init Phase 2: Task 2 - Importing Infrastructure You identified the existing VMs and brought them under Terraform management.

Bash

3. List instances to find names and zones

gcloud compute instances list

4. Get the specific Numeric IDs (Required for Import)

gcloud compute instances describe tf-instance-1 --zone=us-west1-b --format='get(id)' gcloud compute instances describe tf-instance-2 --zone=us-west1-b --format='get(id)'

5. Import the instances into the state file

(Replace [ID] with the numbers from the previous step)

terraform import module.instances.google_compute_instance.tf-instance-1 [ID1] terraform import module.instances.google_compute_instance.tf-instance-2 [ID2]

6. Apply to sync the code in instances.tf with the cloud

terraform apply

(Typed 'yes')

Phase 3: Task 3 - Migrating to Remote Backend You created a Cloud Storage bucket and moved your state file into it.

Bash

7. Apply again to create the storage bucket defined in the storage module

terraform apply

8. Initialize again to migrate local state to GCS

terraform init -migrate-state

(Typed 'yes')

Phase 4: Task 4 & 5 - Modifying and Destroying You upgraded the machine types and practiced lifecycle management.

Bash

9. Apply changes after updating machine_type to e2-standard-2

and adding the third instance tf-instance-009698

terraform apply

10. Apply again after deleting the third instance block from the code

terraform apply Phase 5: Task 6 - Networking and Provider Upgrades You added the VPC module from the registry, which required a provider version upgrade.

Bash

11. Attempted init (failed due to version lock)

terraform init

12. Upgraded the provider and initialized the new VPC module

terraform init -upgrade

13. Targeted apply to ensure the Network exists before moving VMs

terraform apply -target=module.vpc

14. Full apply to move tf-instance-1 and tf-instance-2 into subnets

terraform apply Phase 6: Task 7 - Security (Firewall) The final step to permit traffic to your instances.

Bash

15. Final apply to create the tf-firewall resource

terraform apply

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