This terraform script deploy and initialize a basic single master Kubernetes cluster on AWS.
Script will,
1. create a vpc on specified aws region
2. create internet gateway, subnet and associated routing tables for creating cluster
3. create the K8s cluster
For customizing the provisioning use the terraform.tfvars file.
region = "aws region for provisioning K8 cluster"
availability_zone = "availability zone for provisioning cluster"
k8_vpc_cidr_block = "vpc CIDR block"
k8_subnet_cidr_block = "K8 subnet cidr block"
instance_type = "K8 master and node instance type"
ami = "ami id to use for creating node, ubuntu based ami"
key = "ssh key for accessing ec2 instances"
k8_nodes = "number of K8 slave nodes"
k8_token = "k8 token for joining nodes to cluster"
Before running the teraform script make sure all parameters are configured appropriately.
clone project
export AWS access key and AWS secret key
terraform init
terraform apply
After provisioning the cluster, bellow command needs to run on the master as user 'ubuntu'
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/bc79dd1505b0c8681ece4de4c0d86c5cd2643275/Documentation/kube-flannel.yml
- Fine tune Security groups for more controlled access
- Control the subnet placing of nodes