EKS

Opstree Solutions

• This terraform module will create a EKS Cluster.
• This projecct is a part of opstree's ot-aws initiative for terraform modules.

Usage

provider "aws" {
  profile = "default"
  region  = "ap-south-1"
}

locals {
  common_tags        = { ENV : "QA", OWNER : "DEVOPS", PROJECT : "CATALOG_MIGRATION", COMPONENT : "EKS", COMPONENT_TYPE : "BUILDPIPER" }
  worker_group1_tags = { "name" : "worker01" }
  worker_group2_tags = { "name" : "worker02" }
}

module "petpark_eks_cluster" {
  source                 = "../eks"
  cluster_name           = var.cluster_name
  eks_cluster_version    = "1.16"
  subnets                = ["subnet-057a78d8", "subnet-0ac0f6a"]
  tags                   = local.common_tags
  kubeconfig_name        = "config"
  config_output_path     = "config"
  eks_node_group_name    = "test-eks-cluster"
  region                 = "ap-south-1"
  create_node_group      = true
  endpoint_private       = false
  endpoint_public        = true
  vpc_id                 = "vpc-077a88f"
  slackUrl               = "slack_webhook_url"
  node_groups = {
    "worker1" = {
      subnets            = ["privtesubnet_id_1", "privatesubnet_id_2"]
      ssh_key            = var.ssh_key
      security_group_ids = [var.node_sg]
      instance_type      = ["m5a.2xlarge"]
      desired_capacity   = 6
      disk_size          = 100
      max_capacity       = 15
      min_capacity       = 2
      capacity_type      = "ON_DEMAND"
      ami_type           = "AL2_x86_64_GPU"
      tags               = merge(local.common_tags, local.worker_group1_tags)
      labels             = { "node_group" : "worker1" }
    }
    "worker2" = {
      subnets            = ["privtesubnet_id_1", "privatesubnet_id_2"]
      ssh_key            = var.ssh_key
      security_group_ids = [var.node_sg]
      instance_type      = ["m5a.2xlarge"]
      desired_capacity   = 6
      disk_size          = 100
      max_capacity       = 15
      min_capacity       = 2
      capacity_type      = "SPOT"
      ami_type           = "AL2_x86_64"
      tags               = merge(local.common_tags, local.worker_group1_tags)
      labels             = { "node_group" : "worker2" }
    }
  }
}

$   cat output.tf
/*-------------------------------------------------------*/
output "endpoint" {
  value = aws_eks_cluster.eks_cluster.endpoint
}

output "node_iam_role_arn" {
  value = aws_iam_role.node_group_role.arn
}

output "kubeconfig-certificate-authority-data" {
  value = aws_eks_cluster.eks_cluster.certificate_authority.0.data
}

output "eks_cluster_id" {
  value = aws_eks_cluster.eks_cluster.id
}

output "eks_cluster_arn" {
  value = aws_eks_cluster.eks_cluster.arn
}
/*-------------------------------------------------------*/

Inputs

Name	Description	Type	Default	Required
cluster_name	Name of Your Cluster.	string	null	yes
vpc_subnet	A list of subnet IDs to launch resources in.	List	null	yes
eks_cluster_version	Define Kubernetes Version to install.	string	null	yes
eks_cluster_tag	eks Cluster Tag.	map(string)	null	yes
node_group_name	node group name to attach in EKS.	string	null	yes
instance_type	Define Instance type ie. "t2.medium".	lint(string)	null	yes
disk_size	Define Disk size of nodes.	number	null	yes
scale_min_size	Define minimum nodes scaling.	number	null	yes
scale_desired_size	Define Desire nodes.	number	null	yes
ssh_key	Define ssh key.	string	null	yes
ami_type	Define ami type of worker node.	string	null	yes
security_group_ids	ssh security group id for ssh.	string	null	yes
kubeconfig_name	name for kube config file.	string	null	yes
config_output_path	path to store kubeconfig file	string	null	yes
region	define region	string	null	yes
endpoint_private	define endpoint private	boolean	null	yes
endpoint_public	define endpoint public	boolean	null	yes
create_node_group	create node groups	boolean	yes	yes
capacity_type	define capacity type like ON_DEMAND or SPOT	string	null	yes
metrics_server	if you want to install materics server in eks cluster	boolean	yes	no
k8s-spot-termination-handler	if you want to install k8s-spot-termination-handler in eks cluster	boolean	yes	no
cluster_autoscaler	if you want to install cluster_autoscaler in eks cluster	boolean	yes	no
slackUrl	notification for instance termination	boolean	yes	no

Outputs

Name	Description
endpoint	Endpoint of EKS cluster
node_iam_role_arn	EKS node group default arn
kubeconfig-certificate-authority-data	eks certificate
eks_cluster_id	Eks cluster id
eks_cluster_arn	EKS cluster arn eks_cluster_arn

Related Projects

Check out these related projects.

• network_skeleton - Terraform module for providing a general purpose Networking solution
• security_group - Terraform module for creating dynamic Security groups
• HA_ec2_ALB - Terraform module will create a Highly available setup of an EC2 instance with quick disater recovery.
• rds - Terraform module for creating Relation Datbase service.
• HA_ec2 - Terraform module for creating a Highly available setup of an EC2 instance with quick disater recovery.
• rolling_deployment - This terraform module will orchestrate rolling deployment.

Contributors

• Devesh
• Aashutosh
• Sandeep Rawat