Amazon EKS Blueprints for Terraform

Welcome to Amazon EKS Blueprints for Terraform!

This repository contains a collection of Terraform modules that aim to make it easier and faster for customers to adopt Amazon EKS. It can be used by AWS customers, partners, and internal AWS teams to configure and manage complete EKS clusters that are fully bootstrapped with the operational software that is needed to deploy and operate workloads.

This project leverages the community terraform-aws-eks modules for deploying EKS Clusters.

Getting Started

The easiest way to get started with EKS Blueprints is to follow our Getting Started guide.

Documentation

For complete project documentation, please visit our documentation site.

Examples

To view examples for how you can leverage EKS Blueprints, please see the examples directory.

Usage

The below demonstrates how you can leverage EKS Blueprints to deploy an EKS cluster, a managed node group, and various Kubernetes add-ons.

module "eks_blueprints" {
  source = "github.com/aws-ia/terraform-aws-eks-blueprints?ref=v4.0.2"

  # EKS CLUSTER
  cluster_version           = "1.21"
  vpc_id                    = "<vpcid>"                                      # Enter VPC ID
  private_subnet_ids        = ["<subnet-a>", "<subnet-b>", "<subnet-c>"]     # Enter Private Subnet IDs

  # EKS MANAGED NODE GROUPS
  managed_node_groups = {
    mg_m5 = {
      node_group_name = "managed-ondemand"
      instance_types  = ["m5.large"]
      subnet_ids      = ["<subnet-a>", "<subnet-b>", "<subnet-c>"]
    }
  }
}

module "eks_blueprints_kubernetes_addons" {
  source = "github.com/aws-ia/terraform-aws-eks-blueprints//modules/kubernetes-addons?ref=v4.0.2"

  eks_cluster_id = module.eks_blueprints.eks_cluster_id

  # EKS Addons
  enable_amazon_eks_vpc_cni            = true
  enable_amazon_eks_coredns            = true
  enable_amazon_eks_kube_proxy         = true
  enable_amazon_eks_aws_ebs_csi_driver = true

  #K8s Add-ons
  enable_argocd                       = true
  enable_aws_for_fluentbit            = true
  enable_aws_load_balancer_controller = true
  enable_cluster_autoscaler           = true
  enable_metrics_server               = true
  enable_prometheus                   = true
}

The code above will provision the following:

• ✅ A new EKS Cluster with a managed node group.
• ✅ Amazon EKS add-ons vpc-cni, CoreDNS, kube-proxy, and aws-ebs-csi-driver.
• ✅ Cluster Autoscaler and Metrics Server for scaling your workloads.
• ✅ Fluent Bit for routing logs.
• ✅ AWS Load Balancer Controller for distributing traffic.
• ✅ Argocd for declarative GitOps CD for Kubernetes.
• ✅ Prometheus for observability.

Add-ons

EKS Blueprints makes it easy to provision a wide range of popular Kubernetes add-ons into an EKS cluster. By default, the Terraform Helm provider is used to deploy add-ons with publicly available Helm Charts.EKS Blueprints provides support for leveraging self-hosted Helm Chart as well.

For complete documentation on deploying add-ons, please visit our add-on documentation

Submodules

The root module calls into several submodules which provides support for deploying and integrating a number of external AWS services that can be used in concert with Amazon EKS. This includes Amazon Managed Prometheus and EMR on EKS. For complete documentation on deploying external services, please visit our submodules documentation.

Motivation

Kubernetes is a powerful and extensible container orchestration technology that allows you to deploy and manage containerized applications at scale. The extensible nature of Kubernetes also allows you to use a wide range of popular open-source tools, commonly referred to as add-ons, in Kubernetes clusters. With such a large number of tooling and design choices available however, building a tailored EKS cluster that meets your application’s specific needs can take a significant amount of time. It involves integrating a wide range of open-source tools and AWS services and requires deep expertise in AWS and Kubernetes.

AWS customers have asked for examples that demonstrate how to integrate the landscape of Kubernetes tools and make it easy for them to provision complete, opinionated EKS clusters that meet specific application requirements. Customers can use EKS Blueprints to configure and deploy purpose built EKS clusters, and start onboarding workloads in days, rather than months.

Support & Feedback

EKS Blueprints for Terraform is maintained by AWS Solution Architects. It is not part of an AWS service and support is provided best-effort by the EKS Blueprints community.

To post feedback, submit feature ideas, or report bugs, please use the Issues section of this GitHub repo.

For architectural details, step-by-step instructions, and customization options, see our documentation site.

If you are interested in contributing to EKS Blueprints, see the Contribution guide.

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Requirements

Name	Version
terraform	>= 1.0.0
aws	>= 3.72
helm	>= 2.4.1
http	2.4.1
kubectl	>= 1.14
kubernetes	>= 2.10
local	>= 2.1
null	>= 3.1

Providers

Name	Version
aws	>= 3.72
http	2.4.1
kubernetes	>= 2.10

Modules

Name	Source	Version
aws_eks	terraform-aws-modules/eks/aws	v18.17.0
aws_eks_fargate_profiles	./modules/aws-eks-fargate-profiles	n/a
aws_eks_managed_node_groups	./modules/aws-eks-managed-node-groups	n/a
aws_eks_self_managed_node_groups	./modules/aws-eks-self-managed-node-groups	n/a
aws_eks_teams	./modules/aws-eks-teams	n/a
emr_on_eks	./modules/emr-on-eks	n/a
kms	./modules/aws-kms	n/a

Resources

Name	Type
kubernetes_config_map.amazon_vpc_cni	resource
kubernetes_config_map.aws_auth	resource
aws_caller_identity.current	data source
aws_eks_cluster.cluster	data source
aws_iam_policy_document.eks_key	data source
aws_iam_session_context.current	data source
aws_partition.current	data source
aws_region.current	data source
http_http.eks_cluster_readiness	data source

Inputs

Name	Description	Type	Default	Required
application_teams	Map of maps of Application Teams to create	any	{}	no
aws_auth_additional_labels	Additional kubernetes labels applied on aws-auth ConfigMap	map(string)	{}	no
cloudwatch_log_group_kms_key_id	If a KMS Key ARN is set, this key will be used to encrypt the corresponding log group. Please be sure that the KMS Key has an appropriate key policy (https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/encrypt-log-data-kms.html)	string	null	no
cloudwatch_log_group_retention_in_days	Number of days to retain log events. Default retention - 90 days	number	90	no
cluster_additional_security_group_ids	List of additional, externally created security group IDs to attach to the cluster control plane	list(string)	[]	no
cluster_enabled_log_types	A list of the desired control plane logging to enable	list(string)	[ "api", "audit", "authenticator", "controllerManager", "scheduler" ]	no
cluster_encryption_config	Configuration block with encryption configuration for the cluster	list(object({ provider_key_arn = string resources = list(string) }))	[]	no
cluster_endpoint_private_access	Indicates whether or not the EKS private API server endpoint is enabled. Default to EKS resource and it is false	bool	false	no
cluster_endpoint_public_access	Indicates whether or not the EKS public API server endpoint is enabled. Default to EKS resource and it is true	bool	true	no
cluster_endpoint_public_access_cidrs	List of CIDR blocks which can access the Amazon EKS public API server endpoint	list(string)	[ "0.0.0.0/0" ]	no
cluster_identity_providers	Map of cluster identity provider configurations to enable for the cluster. Note - this is different/separate from IRSA	any	{}	no
cluster_ip_family	The IP family used to assign Kubernetes pod and service addresses. Valid values are ipv4 (default) and ipv6. You can only specify an IP family when you create a cluster, changing this value will force a new cluster to be created	string	"ipv4"	no
cluster_kms_key_additional_admin_arns	A list of additional IAM ARNs that should have FULL access (kms:*) in the KMS key policy	list(string)	[]	no
cluster_kms_key_arn	A valid EKS Cluster KMS Key ARN to encrypt Kubernetes secrets	string	null	no
cluster_kms_key_deletion_window_in_days	The waiting period, specified in number of days (7 - 30). After the waiting period ends, AWS KMS deletes the KMS key	number	30	no
cluster_name	EKS Cluster Name	string	""	no
cluster_security_group_additional_rules	List of additional security group rules to add to the cluster security group created. Set source_node_security_group = true inside rules to set the node_security_group as source	any	{}	no
cluster_security_group_id	Security group to be used if creation of cluster security group is turned off	string	""	no
cluster_security_group_tags	A map of additional tags to add to the cluster security group created	map(string)	{}	no
cluster_service_ipv4_cidr	The CIDR block to assign Kubernetes service IP addresses from. If you don't specify a block, Kubernetes assigns addresses from either the 10.100.0.0/16 or 172.20.0.0/16 CIDR blocks	string	null	no
cluster_service_ipv6_cidr	The IPV6 Service CIDR block to assign Kubernetes service IP addresses	string	null	no
cluster_timeouts	Create, update, and delete timeout configurations for the cluster	map(string)	{}	no
cluster_version	Kubernetes <major>.<minor> version to use for the EKS cluster (i.e.: 1.22)	string	"1.22"	no
create_cloudwatch_log_group	Determines whether a log group is created by this module for the cluster logs. If not, AWS will automatically create one if logging is enabled	bool	false	no
create_cluster_security_group	Toggle to create or assign cluster security group	bool	true	no
create_eks	Create EKS cluster	bool	true	no
create_iam_role	Determines whether a an IAM role is created or to use an existing IAM role	bool	true	no
create_node_security_group	Determines whether to create a security group for the node groups or use the existing node_security_group_id	bool	true	no
custom_oidc_thumbprints	Additional list of server certificate thumbprints for the OpenID Connect (OIDC) identity provider's server certificate(s)	list(string)	[]	no
eks_readiness_timeout	The maximum time (in seconds) to wait for EKS API server endpoint to become healthy	number	"600"	no
emr_on_eks_teams	EMR on EKS Teams config	any	{}	no
enable_emr_on_eks	Enable EMR on EKS	bool	false	no
enable_irsa	Determines whether to create an OpenID Connect Provider for EKS to enable IRSA	bool	true	no
enable_windows_support	Enable Windows support	bool	false	no
fargate_profiles	Fargate profile configuration	any	{}	no
iam_role_additional_policies	Additional policies to be added to the IAM role	list(string)	[]	no
iam_role_arn	Existing IAM role ARN for the cluster. Required if create_iam_role is set to false	string	null	no
iam_role_name	Name to use on IAM role created	string	null	no
iam_role_path	Cluster IAM role path	string	null	no
iam_role_permissions_boundary	ARN of the policy that is used to set the permissions boundary for the IAM role	string	null	no
managed_node_groups	Managed node groups configuration	any	{}	no
map_accounts	Additional AWS account numbers to add to the aws-auth ConfigMap	list(string)	[]	no
map_roles	Additional IAM roles to add to the aws-auth ConfigMap	list(object({ rolearn = string username = string groups = list(string) }))	[]	no
map_users	Additional IAM users to add to the aws-auth ConfigMap	list(object({ userarn = string username = string groups = list(string) }))	[]	no
node_security_group_additional_rules	List of additional security group rules to add to the node security group created. Set source_cluster_security_group = true inside rules to set the cluster_security_group as source	any	{}	no
node_security_group_tags	A map of additional tags to add to the node security group created	map(string)	{}	no
openid_connect_audiences	List of OpenID Connect audience client IDs to add to the IRSA provider	list(string)	[]	no
platform_teams	Map of maps of platform teams to create	any	{}	no
private_subnet_ids	List of private subnets Ids for the cluster and worker nodes	list(string)	[]	no
public_subnet_ids	List of public subnets Ids for the worker nodes	list(string)	[]	no
self_managed_node_groups	Self-managed node groups configuration	any	{}	no
tags	Additional tags (e.g. map('BusinessUnit,XYZ)	map(string)	{}	no
vpc_id	VPC Id	string	n/a	yes
worker_additional_security_group_ids	A list of additional security group ids to attach to worker instances	list(string)	[]	no

Outputs

Name	Description
cluster_primary_security_group_id	Cluster security group that was created by Amazon EKS for the cluster. Managed node groups use this security group for control-plane-to-data-plane communication. Referred to as 'Cluster security group' in the EKS console
cluster_security_group_arn	Amazon Resource Name (ARN) of the cluster security group
cluster_security_group_id	EKS Control Plane Security Group ID
configure_kubectl	Configure kubectl: make sure you're logged in with the correct AWS profile and run the following command to update your kubeconfig
eks_cluster_certificate_authority_data	Base64 encoded certificate data required to communicate with the cluster
eks_cluster_endpoint	Endpoint for your Kubernetes API server
eks_cluster_id	Amazon EKS Cluster Name
eks_cluster_status	Amazon EKS Cluster Status
eks_cluster_version	The Kubernetes version for the cluster
eks_oidc_issuer_url	The URL on the EKS cluster OIDC Issuer
eks_oidc_provider_arn	The ARN of the OIDC Provider if enable_irsa = true.
emr_on_eks_role_arn	IAM execution role ARN for EMR on EKS
emr_on_eks_role_id	IAM execution role ID for EMR on EKS
fargate_profiles	Outputs from EKS Fargate profiles groups
fargate_profiles_aws_auth_config_map	Fargate profiles AWS auth map
fargate_profiles_iam_role_arns	IAM role arn's for Fargate Profiles
managed_node_group_arn	Managed node group arn
managed_node_group_aws_auth_config_map	Managed node groups AWS auth map
managed_node_group_iam_instance_profile_arns	IAM instance profile arn's of managed node groups
managed_node_group_iam_instance_profile_id	IAM instance profile id of managed node groups
managed_node_group_iam_role_arns	IAM role arn's of managed node groups
managed_node_group_iam_role_names	IAM role names of managed node groups
managed_node_groups	Outputs from EKS Managed node groups
managed_node_groups_id	EKS Managed node groups id
managed_node_groups_status	EKS Managed node groups status
oidc_provider	The OpenID Connect identity provider (issuer URL without leading https://)
self_managed_node_group_autoscaling_groups	Autoscaling group names of self managed node groups
self_managed_node_group_aws_auth_config_map	Self managed node groups AWS auth map
self_managed_node_group_iam_instance_profile_id	IAM instance profile id of managed node groups
self_managed_node_group_iam_role_arns	IAM role arn's of self managed node groups
self_managed_node_groups	Outputs from EKS Self-managed node groups
teams	Outputs from EKS Fargate profiles groups
windows_node_group_aws_auth_config_map	Windows node groups AWS auth map
worker_node_security_group_arn	Amazon Resource Name (ARN) of the worker node shared security group
worker_node_security_group_id	ID of the worker node shared security group

Security

See CONTRIBUTING for more information.

License

Apache-2.0 Licensed. See LICENSE.