GCP GKE Terraform Infrastructure

This repository contains Terraform code to provision a Google Kubernetes Engine (GKE) cluster and supporting infrastructure on Google Cloud Platform (GCP).

Features

• Custom VPC and subnets (public/private)
• GKE cluster with node pools
• NAT gateway for private subnet egress
• IAM service accounts and roles for GKE nodes
• Firewall rules for secure access
• Google Cloud APIs enablement

Repository Structure

.
├── apis.tf              # Enable required GCP APIs
├── firewalls.tf         # Firewall rules
├── gke.tf               # GKE cluster definition
├── gke-nodes.tf         # Node pool and IAM for GKE nodes
├── local.tf             # Locals and variables
├── nat.tf               # NAT gateway configuration
├── provider.tf          # Provider and backend config
├── subnets.tf           # Subnet definitions
├── vpc.tf               # VPC network definition

Prerequisites

• Terraform
• Google Cloud SDK
• A GCP project with billing enabled
• Service account credentials with sufficient permissions

Usage

1. Clone the repository:

   git clone <repo-url>
   cd <repo-directory>

2. Initialize Terraform:

   terraform init

3. Review and apply the plan:

   terraform plan
   terraform apply

4. Destroy resources (when finished):

   terraform destroy

Customization

• Edit local.tf to set your project ID, region, and other variables.
• Modify gke.tf and gke-nodes.tf to adjust cluster/node pool settings.
• Update firewalls.tf to change network access rules.

Notes

• State files (terraform.tfstate*) should not be committed to version control.
• The GKE cluster is created without deletion protection. Use the lifecycle block if you want to prevent accidental deletion.
• Make sure to clean up resources to avoid unnecessary charges.