Join EKS Nodes

This terraform module creates the required local configuration for kubectl and aws-auth configmap and execute kubectl command to join the EKS nodes to the EKS cluster.

The Join EKS nodes module requires:

• An EKS Cluster, preferably created using the EKS Cluster Module.
• The kubectl binary installed within the OS Path as described at (https://docs.aws.amazon.com/eks/latest/userguide/install-kubectl.html)
• The aws-iam-authenticator binary installed within the OS Path as described at (https://docs.aws.amazon.com/eks/latest/userguide/getting-started.html#eks-prereqs)
• The IAM user configured with using this module should be the same used to create the EKS Cluster.

Features

This terraform module creates the following resources:

• Local kubeconfig configuration
• Local aws-auth-cm.yaml
• Creates the aws-auth config map in kubernetes

Usage

To use the module, include something like the following in your terraform configuration:

module "join_cluster" {
  source = "github.com/overdrive3000/terraform_eks_join_nodes"

  cluster_name     = "mycluster"
  region           = "us-east-1"
  cluster_endpoint = "API ENDPOINT RETORNED BY EKS CLUSTER"
  cluster_ca       = "CA RETURNED BY THE EKS CLUSTER"
  role             = "arn:aws:iam::000000000:role/mycluster-eksServiceRole"
}

Inputs

Name	Description	Default	Required
cluster_name	EKS Cluster name	-	yes
region	EKS Cluster region	-	yes
cluster_endpoint	EKS Cluster API Server Endpoint	-	yes
role	IAM EKS Service Role	-	yes
kubeconfig	Path in which kubeconfig will be generated	~/.kube/	no

Output

Name	Description
config_map	aws-auth-cm configuration
kubeconfig	Full path of the kubectl configuration file