Terraform module to provision an EKS cluster on AWS.
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The module provisions the following resources:
- EKS cluster of master nodes that can be used together with the terraform-aws-eks-workers module to create a full-blown cluster
- IAM Role to allow the cluster to access other AWS services
- Security Group which is used by EKS workers to connect to the cluster and kubelets and pods to receive communication from the cluster control plane (see terraform-aws-eks-workers)
- The module generates
kubeconfigconfiguration to connect to the cluster usingkubectl
For a complete example, see examples/complete
provider "aws" {
region = "us-west-2"
}
variable "tags" {
type = "map"
default = {}
description = "Additional tags (e.g. map('BusinessUnit','XYZ')"
}
locals {
# The usage of the specific kubernetes.io/cluster/* resource tags below are required
# for EKS and Kubernetes to discover and manage networking resources
# https://www.terraform.io/docs/providers/aws/guides/eks-getting-started.html#base-vpc-networking
tags = "${merge(var.tags, map("kubernetes.io/cluster/eg-testing-cluster", "shared"))}"
}
module "vpc" {
source = "git::https://github.com/cloudposse/terraform-aws-vpc.git?ref=master"
namespace = "eg"
stage = "testing"
name = "cluster"
tags = "${local.tags}"
cidr_block = "10.0.0.0/16"
}
module "subnets" {
source = "git::https://github.com/cloudposse/terraform-aws-dynamic-subnets.git?ref=master"
availability_zones = ["us-west-1a", "us-west-1b", "us-west-1c", "us-west-1d"]
namespace = "eg"
stage = "testing"
name = "cluster"
tags = "${local.tags}"
region = "us-west-2"
vpc_id = "${module.vpc.vpc_id}"
igw_id = "${module.vpc.igw_id}"
cidr_block = "${module.vpc.vpc_cidr_block}"
nat_gateway_enabled = "true"
}
module "eks_cluster" {
source = "git::https://github.com/cloudposse/terraform-aws-eks-cluster.git?ref=master"
namespace = "eg"
stage = "testing"
name = "cluster"
tags = "${var.tags}"
vpc_id = "${module.vpc.vpc_id}"
subnet_ids = ["${module.subnets.public_subnet_ids}"]
# `workers_security_group_count` is needed to prevent `count can't be computed` errors
workers_security_group_ids = ["${module.eks_workers.security_group_id}"]
workers_security_group_count = 1
}
module "eks_workers" {
source = "git::https://github.com/cloudposse/terraform-aws-eks-workers.git?ref=master"
namespace = "eg"
stage = "testing"
name = "cluster"
tags = "${var.tags}"
instance_type = "t2.medium"
vpc_id = "${module.vpc.vpc_id}"
subnet_ids = ["${module.subnets.public_subnet_ids}"]
health_check_type = "EC2"
min_size = 1
max_size = 3
wait_for_capacity_timeout = "10m"
associate_public_ip_address = true
cluster_name = "eg-testing-cluster"
cluster_endpoint = "${module.eks_cluster.eks_cluster_endpoint}"
cluster_certificate_authority_data = "${module.eks_cluster.eks_cluster_certificate_authority_data}"
cluster_security_group_id = "${module.eks_cluster.security_group_id}"
# Auto-scaling policies and CloudWatch metric alarms
autoscaling_policies_enabled = "true"
cpu_utilization_high_threshold_percent = "80"
cpu_utilization_low_threshold_percent = "20"
}Available targets:
help Help screen
help/all Display help for all targets
help/short This help short screen
lint Lint terraform code
| Name | Description | Type | Default | Required |
|---|---|---|---|---|
| allowed_cidr_blocks | List of CIDR blocks to be allowed to connect to the EKS cluster | list | <list> |
no |
| allowed_security_groups | List of Security Group IDs to be allowed to connect to the EKS cluster | list | <list> |
no |
| attributes | Additional attributes (e.g. 1) |
list | <list> |
no |
| delimiter | Delimiter to be used between name, namespace, stage, etc. |
string | - |
no |
| enabled | Whether to create the resources. Set to false to prevent the module from creating any resources |
string | true |
no |
| environment | Environment, e.g. 'testing', 'UAT' | string | `` | no |
| name | Solution name, e.g. 'app' or 'cluster' | string | app |
no |
| namespace | Namespace, which could be your organization name, e.g. 'eg' or 'cp' | string | - | yes |
| stage | Stage, e.g. 'prod', 'staging', 'dev', or 'test' | string | - | yes |
| subnet_ids | A list of subnet IDs to launch the cluster in | list | - | yes |
| tags | Additional tags (e.g. map('BusinessUnit,XYZ) |
map | <map> |
no |
| vpc_id | VPC ID for the EKS cluster | string | - | yes |
| workers_security_group_count | Count of the worker Security Groups. Needed to prevent Terraform error count can't be computed |
string | - | yes |
| workers_security_group_ids | Security Group IDs of the worker nodes | list | - | yes |
| Name | Description |
|---|---|
| eks_cluster_arn | The Amazon Resource Name (ARN) of the cluster |
| eks_cluster_certificate_authority_data | The base64 encoded certificate data required to communicate with the cluster |
| eks_cluster_endpoint | The endpoint for the Kubernetes API server |
| eks_cluster_id | The name of the cluster |
| eks_cluster_version | The Kubernetes server version of the cluster |
| kubeconfig | kubeconfig configuration to connect to the cluster using kubectl. https://www.terraform.io/docs/providers/aws/guides/eks-getting-started.html#configuring-kubectl-for-eks |
| security_group_arn | ARN of the EKS cluster Security Group |
| security_group_id | ID of the EKS cluster Security Group |
| security_group_name | Name of the EKS cluster Security Group |
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Check out these related projects.
- terraform-aws-eks-workers - Terraform module to provision an AWS AutoScaling Group, IAM Role, and Security Group for EKS Workers
- terraform-aws-ec2-autoscale-group - Terraform module to provision Auto Scaling Group and Launch Template on AWS
- terraform-aws-ecs-container-definition - Terraform module to generate well-formed JSON documents (container definitions) that are passed to the aws_ecs_task_definition Terraform resource
- terraform-aws-ecs-alb-service-task - Terraform module which implements an ECS service which exposes a web service via ALB
- erraform-aws-ecs-web-app - Terraform module that implements a web app on ECS and supports autoscaling, CI/CD, monitoring, ALB integration, and much more
- terraform-aws-ecs-codepipeline - Terraform module for CI/CD with AWS Code Pipeline and Code Build for ECS
- terraform-aws-ecs-cloudwatch-autoscaling - Terraform module to autoscale ECS Service based on CloudWatch metrics
- terraform-aws-ecs-cloudwatch-sns-alarms - Terraform module to create CloudWatch Alarms on ECS Service level metrics
- terraform-aws-ec2-instance - Terraform module for providing a general purpose EC2 instance
- terraform-aws-ec2-instance-group - Terraform module for provisioning multiple general purpose EC2 hosts for stateful applications
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