Amazon EKS Blueprints Addon Terraform module

Terraform module which provisions an addon (Helm release) and an IAM role for service accounts (IRSA).

Usage

Create Addon (Helm Release) w/ IAM Role for Service Account (IRSA)

module "eks_blueprints_addon" {
  source = "aws-ia/eks-blueprints-addon/aws"
  version = "~> 1.0" #ensure to update this to the latest/desired version

  chart            = "karpenter"
  chart_version    = "0.16.2"
  repository       = "https://charts.karpenter.sh/"
  description      = "Kubernetes Node Autoscaling: built for flexibility, performance, and simplicity"
  namespace        = "karpenter"
  create_namespace = true

  set = [
    {
      name  = "clusterName"
      value = "eks-blueprints-addon-example"
    },
    {
      name  = "clusterEndpoint"
      value = "https://EXAMPLED539D4633E53DE1B71EXAMPLE.gr7.us-west-2.eks.amazonaws.com"
    },
    {
      name  = "aws.defaultInstanceProfile"
      value = "arn:aws:iam::111111111111:instance-profile/KarpenterNodeInstanceProfile-complete"
    }
  ]

  set_irsa_names = ["serviceAccount.annotations.eks\\.amazonaws\\.com/role-arn"]
  # # Equivalent to the following but the ARN is only known internally to the module
  # set = [{
  #   name  = "serviceAccount.annotations.eks\\.amazonaws\\.com/role-arn"
  #   value = iam_role_arn.this[0].arn
  # }]

  # IAM role for service account (IRSA)
  create_role = true
  role_name   = "karpenter-controller"
  role_policies = {
    karpenter = "arn:aws:iam::111111111111:policy/Karpenter_Controller_Policy-20221008165117447500000007"
  }

  oidc_providers = {
    this = {
      provider_arn = "oidc.eks.us-west-2.amazonaws.com/id/EXAMPLED539D4633E53DE1B71EXAMPLE"
      # namespace is inherited from chart
      service_account = "karpenter"
    }
  }

  tags = {
    Environment = "dev"
  }
}

Create Addon (Helm Release) Only

module "eks_blueprints_addon" {
  source = "aws-ia/eks-blueprints-addon/aws"
  version = "~> 1.0" #ensure to update this to the latest/desired version

  chart         = "metrics-server"
  chart_version = "3.8.2"
  repository    = "https://kubernetes-sigs.github.io/metrics-server/"
  description   = "Metric server helm Chart deployment configuration"
  namespace     = "kube-system"

  values = [
    <<-EOT
      podDisruptionBudget:
        maxUnavailable: 1
      metrics:
        enabled: true
    EOT
  ]

  set = [
    {
      name  = "replicas"
      value = 3
    }
  ]
}

Create IAM Role for Service Account (IRSA) Only

module "eks_blueprints_addon" {
  source = "aws-ia/eks-blueprints-addon/aws"
  version = "~> 1.0" #ensure to update this to the latest/desired version

  # Disable helm release
  create_release = false

  # IAM role for service account (IRSA)
  create_role = true
  create_policy = false
  role_name   = "aws-vpc-cni-ipv4"
  role_policies = {
    AmazonEKS_CNI_Policy = "arn:aws:iam::aws:policy/AmazonEKS_CNI_Policy"
  }

  oidc_providers = {
    this = {
      provider_arn    = "oidc.eks.us-west-2.amazonaws.com/id/EXAMPLED539D4633E53DE1B71EXAMPLE"
      namespace       = "kube-system"
      service_account = "aws-node"
    }
  }

  tags = {
    Environment = "dev"
  }
}

Support & Feedback

Important

EKS Blueprints for Terraform is maintained by AWS Solution Architects. It is not part of an AWS service and support is provided as a best-effort by the EKS Blueprints community. To provide feedback, please use the issues templates provided. If you are interested in contributing to EKS Blueprints, see the Contribution guide.

Requirements

Name	Version
terraform	>= 1.0
aws	>= 4.47
helm	>= 2.9

Providers

Name	Version
aws	>= 4.47
helm	>= 2.9

Modules

No modules.

Resources

Name	Type
aws_iam_policy.this	resource
aws_iam_role.this	resource
aws_iam_role_policy_attachment.additional	resource
aws_iam_role_policy_attachment.this	resource
helm_release.this	resource
aws_caller_identity.current	data source
aws_iam_policy_document.assume	data source
aws_iam_policy_document.this	data source
aws_partition.current	data source

Inputs

Name	Description	Type	Default	Required
allow_self_assume_role	Determines whether to allow the role to be assume itself	bool	false	no
assume_role_condition_test	Name of the IAM condition operator to evaluate when assuming the role	string	"StringEquals"	no
atomic	If set, installation process purges chart on fail. The wait flag will be set automatically if atomic is used. Defaults to false	bool	null	no
chart	Chart name to be installed. The chart name can be local path, a URL to a chart, or the name of the chart if repository is specified	string	""	no
chart_version	Specify the exact chart version to install. If this is not specified, the latest version is installed	string	null	no
cleanup_on_fail	Allow deletion of new resources created in this upgrade when upgrade fails. Defaults to false	bool	null	no
create	Controls if resources should be created (affects all resources)	bool	true	no
create_namespace	Create the namespace if it does not yet exist. Defaults to false	bool	null	no
create_policy	Whether to create an IAM policy that is attached to the IAM role created	bool	true	no
create_release	Determines whether the Helm release is created	bool	true	no
create_role	Determines whether to create an IAM role	bool	false	no
dependency_update	Runs helm dependency update before installing the chart. Defaults to false	bool	null	no
description	Set release description attribute (visible in the history)	string	null	no
devel	Use chart development versions, too. Equivalent to version '>0.0.0-0'. If version is set, this is ignored	bool	null	no
disable_openapi_validation	If set, the installation process will not validate rendered templates against the Kubernetes OpenAPI Schema. Defaults to false	bool	null	no
disable_webhooks	Prevent hooks from running. Defaults to false	bool	null	no
force_update	Force resource update through delete/recreate if needed. Defaults to false	bool	null	no
keyring	Location of public keys used for verification. Used only if verify is true. Defaults to /.gnupg/pubring.gpg in the location set by home	string	null	no
lint	Run the helm chart linter during the plan. Defaults to false	bool	null	no
max_history	Maximum number of release versions stored per release. Defaults to 0 (no limit)	number	null	no
max_session_duration	Maximum CLI/API session duration in seconds between 3600 and 43200	number	null	no
name	Name of the Helm release	string	""	no
namespace	The namespace to install the release into. Defaults to default	string	null	no
oidc_providers	Map of OIDC providers where each provider map should contain the provider_arn, and service_accounts	any	{}	no
override_policy_documents	List of IAM policy documents that are merged together into the exported document. In merging, statements with non-blank sids will override statements with the same sid	list(string)	[]	no
policy_description	IAM policy description	string	null	no
policy_name	Name of IAM policy	string	null	no
policy_name_use_prefix	Determines whether the IAM policy name (policy_name) is used as a prefix	bool	true	no
policy_path	Path of IAM policy	string	null	no
policy_statements	List of IAM policy statements	any	[]	no
postrender	Configure a command to run after helm renders the manifest which can alter the manifest contents	any	{}	no
recreate_pods	Perform pods restart during upgrade/rollback. Defaults to false	bool	null	no
render_subchart_notes	If set, render subchart notes along with the parent. Defaults to true	bool	null	no
replace	Re-use the given name, only if that name is a deleted release which remains in the history. This is unsafe in production. Defaults to false	bool	null	no
repository	Repository URL where to locate the requested chart	string	null	no
repository_ca_file	The Repositories CA File	string	null	no
repository_cert_file	The repositories cert file	string	null	no
repository_key_file	The repositories cert key file	string	null	no
repository_password	Password for HTTP basic authentication against the repository	string	null	no
repository_username	Username for HTTP basic authentication against the repository	string	null	no
reset_values	When upgrading, reset the values to the ones built into the chart. Defaults to false	bool	null	no
reuse_values	When upgrading, reuse the last release's values and merge in any overrides. If reset_values is specified, this is ignored. Defaults to false	bool	null	no
role_description	IAM Role description	string	null	no
role_name	Name of IAM role	string	null	no
role_name_use_prefix	Determines whether the IAM role name (role_name) is used as a prefix	bool	true	no
role_path	Path of IAM role	string	"/"	no
role_permissions_boundary_arn	Permissions boundary ARN to use for IAM role	string	null	no
role_policies	Policies to attach to the IAM role in {'static_name' = 'policy_arn'} format	map(string)	{}	no
set	Value block with custom values to be merged with the values yaml	any	[]	no
set_irsa_names	Value annotations name where IRSA role ARN created by module will be assigned to the value	list(string)	[]	no
set_sensitive	Value block with custom sensitive values to be merged with the values yaml that won't be exposed in the plan's diff	any	[]	no
skip_crds	If set, no CRDs will be installed. By default, CRDs are installed if not already present. Defaults to false	bool	null	no
source_policy_documents	List of IAM policy documents that are merged together into the exported document. Statements must have unique sids	list(string)	[]	no
tags	A map of tags to add to all resources	map(string)	{}	no
timeout	Time in seconds to wait for any individual kubernetes operation (like Jobs for hooks). Defaults to 300 seconds	number	null	no
values	List of values in raw yaml to pass to helm. Values will be merged, in order, as Helm does with multiple -f options	list(string)	null	no
verify	Verify the package before installing it. Helm uses a provenance file to verify the integrity of the chart; this must be hosted alongside the chart. For more information see the Helm Documentation. Defaults to false	bool	null	no
wait	Will wait until all resources are in a ready state before marking the release as successful. If set to true, it will wait for as long as timeout. If set to null fallback on 300s timeout. Defaults to false	bool	false	no
wait_for_jobs	If wait is enabled, will wait until all Jobs have been completed before marking the release as successful. It will wait for as long as timeout. Defaults to false	bool	null	no

Outputs

Name	Description
app_version	The version number of the application being deployed
chart	The name of the chart
iam_policy	The policy document
iam_policy_arn	The ARN assigned by AWS to this policy
iam_role_arn	ARN of IAM role
iam_role_name	Name of IAM role
iam_role_path	Path of IAM role
iam_role_unique_id	Unique ID of IAM role
name	Name is the name of the release
namespace	Name of Kubernetes namespace
revision	Version is an int32 which represents the version of the release
values	The compounded values from values and set* attributes
version	A SemVer 2 conformant version string of the chart

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License

Apache-2.0 Licensed. See LICENSE.