Kubestack AWS

Provision a Kubernetes cluster with Terraform and CoreOS on AWS. The provisioning mimics the original documentation: Manual Installation as close as possible.

Main features

1. The script follows Kubernetes best practices and embody the "CoreOS Way"

• Components secured with TLS
• Individual node can reboot and the cluster will still function
• Internal cluster DNS is available
• Service accounts enabled
• Cloud-provider enabled

2. Moving parts can be customized

• AWS region
• Master and worker instance types
• Master and worker disk sizes
• Master and worker node counts
• Kubernetes version

Requirements

• Terraform
• OpenSSL
• Kubernetes-cli (kubectl)
• AWS account / security credential / key pair

Setup

• create a file: terraform.tfvars

# aws
ssh_key_name = "<key name in AWS to be used for instance mgmt>" 
ssh_private_key_path = "<path to private key file>"
ssh_public_key = "public SSH key content"


# cluster
master_count = 5
worker_count = 6

• create cluster

terraform plan
terraform apply

• check nodes

kubectl get nodes