A production-ready Terraform configuration for provisioning secure Google Kubernetes Engine (GKE) clusters with enterprise-grade security features and best practices.

🔐 Security First

• Custom Node Pool: Complete separation between control plane and workloads
• Workload Identity: Keyless, secure access for pods to Google Cloud services
• Network Policies: Advanced network segmentation for enhanced security

⚙️ Flexible Configuration

• Easily customizable region, machine type, and node count
• Variable-driven configuration for different environments
• Production-ready defaults with override capabilities

🏗️ Best Practices Built-in

• Infrastructure as Code (IaC) approach
• Modular and maintainable Terraform structure
• Cloud-native security patterns

Before you begin, ensure you have the following installed and configured:

Configure your Google Cloud authentication:

gcloud auth application-default login

terraform init

Replace your-gcp-project-id with your actual Google Cloud Project ID:

terraform plan -var="project_id=your-gcp-project-id"

terraform apply -var="project_id=your-gcp-project-id"

💡 Tip: Use -auto-approve flag to skip the confirmation prompt for automated deployments.

After successful deployment, configure kubectl:

gcloud container clusters get-credentials <cluster-name> --region <region> --project <project-id>

Create a terraform.tfvars file:

project_id   = "my-gcp-project"
region       = "us-west1"
node_count   = 3
machine_type = "e2-standard-4"

├── main.tf              # Primary Terraform configuration
├── variables.tf         # Variable definitions
├── outputs.tf          # Output values
├── terraform.tfvars    # Variable values (create this)
└── README.md          # This file

Enables secure access to Google Cloud services without storing service account keys:

# Example pod configuration
apiVersion: v1
kind: Pod
metadata:
  annotations:
    iam.gke.io/gcp-service-account: [email protected]

Implement microsegmentation with Kubernetes Network Policies:

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: deny-all
spec:
  podSelector: {}
  policyTypes:
  - Ingress
  - Egress

To avoid ongoing charges, destroy the resources when finished:

terraform destroy -var="project_id=your-gcp-project-id"

⚠️ Warning: This will permanently delete all resources created by this Terraform configuration.

• Use Spot VMs for non-critical workloads
• Enable Cluster Autoscaling for dynamic scaling
• Configure Horizontal Pod Autoscaling for applications
• Monitor usage with Google Cloud Billing

1. Fork the repository
2. Create a feature branch: git checkout -b feature/amazing-feature
3. Commit your changes: git commit -m 'Add amazing feature'
4. Push to the branch: git push origin feature/amazing-feature
5. Open a Pull Request

This project is licensed under the MIT License - see the LICENSE file for details.

• 📖 Terraform GCP Provider Documentation
• 🏗️ GKE Documentation
• 💬 Community Support