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Self-Managed Kubernetes Cluster

This project automates the deployment of a self-managed Kubernetes cluster using Terraform and Ansible. The cluster is created in a private AWS VPC and consists of control plane and worker nodes provisioned with kubeadm.

Project Overview

  • Infrastructure as Code (IaC): Uses Terraform to create AWS resources.
  • Configuration Management: Automates Kubernetes setup with Ansible.
  • Networking: Deploys the cluster in a private VPC with security groups.
  • Cluster Components: Kubernetes control plane and worker nodes.
  • Container Networking: Calico is used for networking (optional, needs manual setup).

Prerequisites

  • Terraform
  • Ansible
  • AWS CLI
  • kubectl
  • Ansible control node with SSH access to instances

Kubernetes cluster VPC Infra

Kubernetes vpc infra

Kubernetes architecture

Kubernetes architecture

Deployment Steps

1. Provision AWS Resources

terraform init -backend-config=env-dev/state.tfvars
terraform plan -var-file=env-dev/main.tfvars
terraform apply  -var-file=env-dev/main.tfvars -auto-approve

2. Configure Kubernetes

Ansible will be configured using teraform

3. Join Worker Nodes

Worker nodes retrieve the join command from control plane using scp.

Verification

Check if all nodes are ready:

kubectl get nodes

Check cluster pods:

kubectl get pods -A

Cleanup

To delete all resources:

terraform destroy -var-file=env-dev/main.tfvars -auto-approve

Using Hashicorp vault

  • configure the needed secrets for user and password, ami ..etc

Future Improvements

  • Automate Calico installation
  • Enhance security with IAM roles and policies

This project provides a scalable, secure Kubernetes cluster with automation for provisioning and configuration. 🚀