Learn Terraform - Provision an EKS Cluster

This repo is a fork of the companion repo to the Provision an EKS Cluster learn guide, containing Terraform configuration files to provision an EKS cluster on AWS.

Customizations

The below changes were made, compared to the original repo:

• allocates the Elastic IP outside the VPC module declaration
• creates managed Node Groups instead of Worker Nodes
• creates a VPC Endpoint to privately connect to S3
• creates Transit Gateway resources
• creates an RDS Aurora cluster accessible from EKS workers
• creates an S3 bucket accessible from EKS workers

RDS connection testing

export DATABASE_CLUSTER_ENDPOINT=$(terraform output -raw db_cluster_endpoint)
export DATABASE_CLUSTER_PORT=$(terraform output -raw db_cluster_port)
export DATABASE_USER=$(terraform output -raw db_username)
export DATABASE_PASSWORD=$(terraform output -raw db_password)
export DATABASE_NAME=$(terraform output -raw db_name)

kubectl run postgresql-client --rm --tty -i --restart='Never' \
  --image tmaier/postgresql-client \
  --env=PGPASSWORD="${DATABASE_PASSWORD}" \
  -- -h ${DATABASE_CLUSTER_ENDPOINT} -U ${DATABASE_USER} ${DATABASE_NAME}

S3 access testing

export BUCKET_ID=$(terraform output -raw s3_bucket_id)

kubectl run awscli --rm --tty -i --restart='Never' \
  --image luigidifraia/awscli:v1.0.4 \
  -- s3 ls s3://${BUCKET_ID}