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Cloud Posse

Terraform module to provision an EKS cluster on AWS.


This project is part of our comprehensive "SweetOps" approach towards DevOps.

Terraform Open Source Modules

It's 100% Open Source and licensed under the APACHE2.

We literally have hundreds of terraform modules that are Open Source and well-maintained. Check them out!

Introduction

The module provisions the following resources:

  • EKS cluster of master nodes that can be used together with the terraform-aws-eks-workers, terraform-aws-eks-node-group and terraform-aws-eks-fargate-profile modules 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
  • The module creates and automatically applies an authentication ConfigMap to allow the workers nodes to join the cluster and to add additional users/roles/accounts

NOTE: The module works with Terraform Cloud.

NOTE: Release 0.45.0 contains some changes that could result in the destruction of your existing EKS cluster. To circumvent this, follow the instructions in the 0.45.x+ migration path.

NOTE: Every Terraform module that provisions an EKS cluster has faced the challenge that access to the cluster is partly controlled by a resource inside the cluster, a ConfigMap called aws-auth. You need to be able to access the cluster through the Kubernetes API to modify the ConfigMap, because there is no AWS API for it. This presents a problem: how do you authenticate to an API endpoint that you have not yet created?

We use the Terraform Kubernetes provider to access the cluster, and it uses the same underlying library that kubectl uses, so configuration is very similar. However, every kind of configuration we have tried has failed at some point.

  • After creating the EKS cluster, we can generate a kubeconfig file that configures access to it. This works most of the time, but if the file was present and used as part of the configuration to create the cluster, and then the file is deleted (as would happen in a CI system like Terraform Cloud), Terraform would not cause the file to be regenerated in time to use it to refresh Terraform's state and the "plan" phase will fail.
  • An authentication token can be retrieved using the aws_eks_cluster_auth data source. Again, this works, as long as the token does not expire while Terraform is running, and the token is refreshed during the "plan" phase before trying to refresh the state. Unfortunately, failures of both types have been seen.
  • An authentication token can be retrieved on demand by using the exec feature of the Kubernetes provider to call aws eks get-token. This requires that the aws CLI be installed and available to Terraform and that it has access to sufficient credentials to perform the authentication and is configured to use them.

All of the above methods can face additional challenges when using terraform import to import resources into the Terraform state. The KUBECONFG file is the most reliable, and probably what you would want to use when importing objects if your usual method does not work. You will need to create the file, of course, but that is easily done with aws eks update-kubeconfig.

At the moment, the exec option appears to be the most reliable method, so we recommend using it if possible, but because of the extra requirements it has, we use the data source as the default authentication method.

NOTE: We give you the kubernetes_config_map_ignore_role_changes option and default it to true for the following reasons:

  • We provision the EKS cluster
  • Then we wait for the cluster to become available (see null_resource.wait_for_cluster in auth.tf
  • Then we provision the Kubernetes Auth ConfigMap to map and add additional roles/users/accounts to Kubernetes groups
  • That is all we do in this module, but after that, we expect you to use terraform-aws-eks-node-group to provision a managed Node Group
  • Then EKS updates the Auth ConfigMap and adds worker roles to it (for the worker nodes to join the cluster)
  • Since the ConfigMap is modified outside of Terraform state, Terraform wants to update it to to remove the worker roles EKS added
  • If you update the ConfigMap without including the worker nodes that EKS added, you will disconnect them from the cluster

However, it is possible to get the worker node roles from the terraform-aws-eks-node-group via Terraform "remote state" and include them with any other roles you want to add (example code to be published later), so we make ignoring the role changes optional. If you do not ignore changes then you will have no problem with making future intentional changes.

The downside of having kubernetes_config_map_ignore_role_changes set to true is that if you later want to make changes, such as adding other IAM roles to Kubernetes groups, you cannot do so via Terraform, because the role changes are ignored. Because of Terraform restrictions, you cannot simply change kubernetes_config_map_ignore_role_changes from true to false, apply changes, and set it back to true again. Terraform does not allow the "ignore" settings to be changed on a resource, so kubernetes_config_map_ignore_role_changes is implemented as 2 different resources, one with ignore settings and one without. If you want to switch from ignoring to not ignoring, or vice versa, you must manually move the aws_auth resource in the terraform state. Change the setting of kubernetes_config_map_ignore_role_changes, run terraform plan, and you will see that an aws_auth resource is planned to be destroyed and another one is planned to be created. Use terraform state mv to move the destroyed resource to the created resource "address", something like

terraform state mv 'module.eks_cluster.kubernetes_config_map.aws_auth_ignore_changes[0]' 'module.eks_cluster.kubernetes_config_map.aws_auth[0]'

Then run terraform plan again and you should see only your desired changes made "in place". After applying your changes, if you want to set kubernetes_config_map_ignore_role_changes back to true, you will again need to use terraform state mv to move the auth-map back to its old "address".

Security & Compliance

Security scanning is graciously provided by Bridgecrew. Bridgecrew is the leading fully hosted, cloud-native solution providing continuous Terraform security and compliance.

Benchmark Description
Infrastructure Security Infrastructure Security Compliance
CIS KUBERNETES Center for Internet Security, KUBERNETES Compliance
CIS AWS Center for Internet Security, AWS Compliance
CIS AZURE Center for Internet Security, AZURE Compliance
PCI-DSS Payment Card Industry Data Security Standards Compliance
NIST-800-53 National Institute of Standards and Technology Compliance
ISO27001 Information Security Management System, ISO/IEC 27001 Compliance
SOC2 Service Organization Control 2 Compliance
CIS GCP Center for Internet Security, GCP Compliance
HIPAA Health Insurance Portability and Accountability Compliance

Usage

IMPORTANT: We do not pin modules to versions in our examples because of the difficulty of keeping the versions in the documentation in sync with the latest released versions. We highly recommend that in your code you pin the version to the exact version you are using so that your infrastructure remains stable, and update versions in a systematic way so that they do not catch you by surprise.

Also, because of a bug in the Terraform registry (hashicorp/terraform#21417), the registry shows many of our inputs as required when in fact they are optional. The table below correctly indicates which inputs are required.

For a complete example, see examples/complete.

For automated tests of the complete example using bats and Terratest (which tests and deploys the example on AWS), see test.

Other examples:

  provider "aws" {
    region = var.region
  }

  module "label" {
    source = "cloudposse/label/null"
    # Cloud Posse recommends pinning every module to a specific version
    # version  = "x.x.x"

    namespace  = var.namespace
    name       = var.name
    stage      = var.stage
    delimiter  = var.delimiter
    attributes = ["cluster"]
    tags       = var.tags
  }

  locals {
    # Prior to Kubernetes 1.19, 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 = { "kubernetes.io/cluster/${module.label.id}" = "shared" }
  }

  module "vpc" {
    source = "cloudposse/vpc/aws"
    # Cloud Posse recommends pinning every module to a specific version
    # version     = "x.x.x"
    cidr_block = "172.16.0.0/16"

    tags    = local.tags
    context = module.label.context
  }

  module "subnets" {
    source = "cloudposse/dynamic-subnets/aws"
    # Cloud Posse recommends pinning every module to a specific version
    # version     = "x.x.x"

    availability_zones   = var.availability_zones
    vpc_id               = module.vpc.vpc_id
    igw_id               = module.vpc.igw_id
    cidr_block           = module.vpc.vpc_cidr_block
    nat_gateway_enabled  = true
    nat_instance_enabled = false

    tags    = local.tags
    context = module.label.context
  }

  module "eks_node_group" {
    source = "cloudposse/eks-node-group/aws"
    # Cloud Posse recommends pinning every module to a specific version
    # version     = "x.x.x"

    instance_types                     = [var.instance_type]
    subnet_ids                         = module.subnets.public_subnet_ids
    health_check_type                  = var.health_check_type
    min_size                           = var.min_size
    max_size                           = var.max_size
    cluster_name                       = module.eks_cluster.eks_cluster_id

    # Enable the Kubernetes cluster auto-scaler to find the auto-scaling group
    cluster_autoscaler_enabled = var.autoscaling_policies_enabled

    context = module.label.context

    # Ensure the cluster is fully created before trying to add the node group
    module_depends_on = module.eks_cluster.kubernetes_config_map_id
  }

  module "eks_cluster" {
    source = "cloudposse/eks-cluster/aws"
    # Cloud Posse recommends pinning every module to a specific version
    # version = "x.x.x"

    vpc_id     = module.vpc.vpc_id
    subnet_ids = module.subnets.public_subnet_ids

    kubernetes_version    = var.kubernetes_version
    oidc_provider_enabled = true

    context = module.label.context
  }

Module usage with two unmanaged worker groups:

  locals {
    # Unfortunately, the `aws_ami` data source attribute `most_recent` (https://github.com/cloudposse/terraform-aws-eks-workers/blob/34a43c25624a6efb3ba5d2770a601d7cb3c0d391/main.tf#L141)
    # does not work as you might expect. If you are not going to use a custom AMI you should
    # use the `eks_worker_ami_name_filter` variable to set the right kubernetes version for EKS workers,
    # otherwise the first version of Kubernetes supported by AWS (v1.11) for EKS workers will be selected, but
    # EKS control plane will ignore it to use one that matches the version specified by the `kubernetes_version` variable.
    eks_worker_ami_name_filter = "amazon-eks-node-${var.kubernetes_version}*"
  }

  module "eks_workers" {
    source = "cloudposse/eks-workers/aws"
    # Cloud Posse recommends pinning every module to a specific version
    # version     = "x.x.x"

    attributes                         = ["small"]
    instance_type                      = "t3.small"
    eks_worker_ami_name_filter         = local.eks_worker_ami_name_filter
    vpc_id                             = module.vpc.vpc_id
    subnet_ids                         = module.subnets.public_subnet_ids
    health_check_type                  = var.health_check_type
    min_size                           = var.min_size
    max_size                           = var.max_size
    wait_for_capacity_timeout          = var.wait_for_capacity_timeout
    cluster_name                       = module.label.id
    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           = var.autoscaling_policies_enabled
    cpu_utilization_high_threshold_percent = var.cpu_utilization_high_threshold_percent
    cpu_utilization_low_threshold_percent  = var.cpu_utilization_low_threshold_percent

    context = module.label.context
  }

  module "eks_workers_2" {
    source = "cloudposse/eks-workers/aws"
    # Cloud Posse recommends pinning every module to a specific version
    # version     = "x.x.x"

    attributes                         = ["medium"]
    instance_type                      = "t3.medium"
    eks_worker_ami_name_filter         = local.eks_worker_ami_name_filter
    vpc_id                             = module.vpc.vpc_id
    subnet_ids                         = module.subnets.public_subnet_ids
    health_check_type                  = var.health_check_type
    min_size                           = var.min_size
    max_size                           = var.max_size
    wait_for_capacity_timeout          = var.wait_for_capacity_timeout
    cluster_name                       = module.label.id
    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           = var.autoscaling_policies_enabled
    cpu_utilization_high_threshold_percent = var.cpu_utilization_high_threshold_percent
    cpu_utilization_low_threshold_percent  = var.cpu_utilization_low_threshold_percent

    context = module.label.context
  }

  module "eks_cluster" {
    source = "cloudposse/eks-cluster/aws"
    # Cloud Posse recommends pinning every module to a specific version
    # version     = "x.x.x"

    vpc_id     = module.vpc.vpc_id
    subnet_ids = module.subnets.public_subnet_ids

    kubernetes_version    = var.kubernetes_version
    oidc_provider_enabled = false

    workers_role_arns          = [module.eks_workers.workers_role_arn, module.eks_workers_2.workers_role_arn]
    allowed_security_group_ids = [module.eks_workers.security_group_id, module.eks_workers_2.security_group_id]

    context = module.label.context
  }

Makefile Targets

Available targets:

  help                                Help screen
  help/all                            Display help for all targets
  help/short                          This help short screen
  lint                                Lint terraform code

Requirements

Name Version
terraform >= 0.14.0
aws >= 3.38
kubernetes >= 2.7.1
null >= 2.0
tls >= 3.1.0

Providers

Name Version
aws >= 3.38
kubernetes >= 2.7.1
null >= 2.0
tls >= 3.1.0

Modules

Name Source Version
label cloudposse/label/null 0.25.0
this cloudposse/label/null 0.25.0

Resources

Name Type
aws_cloudwatch_log_group.default resource
aws_eks_addon.cluster resource
aws_eks_cluster.default resource
aws_iam_openid_connect_provider.default resource
aws_iam_policy.cluster_elb_service_role resource
aws_iam_role.default resource
aws_iam_role_policy_attachment.amazon_eks_cluster_policy resource
aws_iam_role_policy_attachment.amazon_eks_service_policy resource
aws_iam_role_policy_attachment.cluster_elb_service_role resource
aws_kms_alias.cluster resource
aws_kms_key.cluster resource
aws_security_group.default resource
aws_security_group_rule.egress resource
aws_security_group_rule.ingress_cidr_blocks resource
aws_security_group_rule.ingress_security_groups resource
aws_security_group_rule.ingress_workers resource
aws_security_group_rule.managed_ingress_cidr_blocks resource
aws_security_group_rule.managed_ingress_security_groups resource
kubernetes_config_map.aws_auth resource
kubernetes_config_map.aws_auth_ignore_changes resource
null_resource.wait_for_cluster resource
aws_eks_cluster_auth.eks data source
aws_iam_policy_document.assume_role data source
aws_iam_policy_document.cluster_elb_service_role data source
aws_partition.current data source
tls_certificate.cluster data source

Inputs

Name Description Type Default Required
additional_tag_map Additional key-value pairs to add to each map in tags_as_list_of_maps. Not added to tags or id.
This is for some rare cases where resources want additional configuration of tags
and therefore take a list of maps with tag key, value, and additional configuration.
map(string) {} no
addons Manages aws_eks_addon resources.
list(object({
addon_name = string
addon_version = string
resolve_conflicts = string
service_account_role_arn = string
}))
[] no
allowed_cidr_blocks A list of IPv4 CIDRs to allow access to the cluster.
The length of this list must be known at "plan" time.
list(string) [] no
allowed_security_group_ids A list of IDs of Security Groups to allow access to the cluster. list(string) [] no
allowed_security_groups DEPRECATED: Use allowed_security_group_ids instead.
Historical description: List of Security Group IDs to be allowed to connect to the EKS cluster.
Historical default: []
list(string) [] no
apply_config_map_aws_auth Whether to apply the ConfigMap to allow worker nodes to join the EKS cluster and allow additional users, accounts and roles to acces the cluster bool true no
associated_security_group_ids A list of IDs of Security Groups to associate the cluster with.
These security groups will not be modified.
list(string) [] no
attributes ID element. Additional attributes (e.g. workers or cluster) to add to id,
in the order they appear in the list. New attributes are appended to the
end of the list. The elements of the list are joined by the delimiter
and treated as a single ID element.
list(string) [] no
aws_auth_yaml_strip_quotes If true, remove double quotes from the generated aws-auth ConfigMap YAML to reduce spurious diffs in plans bool true no
cluster_encryption_config_enabled Set to true to enable Cluster Encryption Configuration bool true no
cluster_encryption_config_kms_key_deletion_window_in_days Cluster Encryption Config KMS Key Resource argument - key deletion windows in days post destruction number 10 no
cluster_encryption_config_kms_key_enable_key_rotation Cluster Encryption Config KMS Key Resource argument - enable kms key rotation bool true no
cluster_encryption_config_kms_key_id KMS Key ID to use for cluster encryption config string "" no
cluster_encryption_config_kms_key_policy Cluster Encryption Config KMS Key Resource argument - key policy string null no
cluster_encryption_config_resources Cluster Encryption Config Resources to encrypt, e.g. ['secrets'] list(any)
[
"secrets"
]
no
cluster_log_retention_period Number of days to retain cluster logs. Requires enabled_cluster_log_types to be set. See https://docs.aws.amazon.com/en_us/eks/latest/userguide/control-plane-logs.html. number 0 no
context Single object for setting entire context at once.
See description of individual variables for details.
Leave string and numeric variables as null to use default value.
Individual variable settings (non-null) override settings in context object,
except for attributes, tags, and additional_tag_map, which are merged.
any
{
"additional_tag_map": {},
"attributes": [],
"delimiter": null,
"descriptor_formats": {},
"enabled": true,
"environment": null,
"id_length_limit": null,
"label_key_case": null,
"label_order": [],
"label_value_case": null,
"labels_as_tags": [
"unset"
],
"name": null,
"namespace": null,
"regex_replace_chars": null,
"stage": null,
"tags": {},
"tenant": null
}
no
create_eks_service_role Set false to use existing eks_cluster_service_role_arn instead of creating one bool true no
create_security_group Set to true to create and configure an additional Security Group for the cluster.
Only for backwards compatibility, if you are updating this module to the latest version on existing clusters, not recommended for new clusters.
EKS creates a managed Security Group for the cluster automatically, places the control plane and managed nodes into the Security Group,
and you can also allow unmanaged nodes to communicate with the cluster by using the allowed_security_group_ids variable.
The additional Security Group is kept in the module for backwards compatibility and will be removed in future releases along with this variable.
See https://docs.aws.amazon.com/eks/latest/userguide/sec-group-reqs.html for more details.
bool false no
delimiter Delimiter to be used between ID elements.
Defaults to - (hyphen). Set to "" to use no delimiter at all.
string null no
descriptor_formats Describe additional descriptors to be output in the descriptors output map.
Map of maps. Keys are names of descriptors. Values are maps of the form
{<br> format = string<br> labels = list(string)<br>}
(Type is any so the map values can later be enhanced to provide additional options.)
format is a Terraform format string to be passed to the format() function.
labels is a list of labels, in order, to pass to format() function.
Label values will be normalized before being passed to format() so they will be
identical to how they appear in id.
Default is {} (descriptors output will be empty).
any {} no
dummy_kubeapi_server URL of a dummy API server for the Kubernetes server to use when the real one is unknown.
This is a workaround to ignore connection failures that break Terraform even though the results do not matter.
You can disable it by setting it to null; however, as of Kubernetes provider v2.3.2, doing so _will_
cause Terraform to fail in several situations unless you provide a valid kubeconfig file
via kubeconfig_path and set kubeconfig_path_enabled to true.
string "https://jsonplaceholder.typicode.com" no
eks_cluster_service_role_arn The ARN of an IAM role for the EKS cluster to use that provides permissions
for the Kubernetes control plane to perform needed AWS API operations.
Required if create_eks_service_role is false, ignored otherwise.
string null no
enabled Set to false to prevent the module from creating any resources bool null no
enabled_cluster_log_types A list of the desired control plane logging to enable. For more information, see https://docs.aws.amazon.com/en_us/eks/latest/userguide/control-plane-logs.html. Possible values [api, audit, authenticator, controllerManager, scheduler] list(string) [] no
endpoint_private_access Indicates whether or not the Amazon EKS private API server endpoint is enabled. Default to AWS EKS resource and it is false bool false no
endpoint_public_access Indicates whether or not the Amazon EKS public API server endpoint is enabled. Default to AWS EKS resource and it is true bool true no
environment ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT' string null no
id_length_limit Limit id to this many characters (minimum 6).
Set to 0 for unlimited length.
Set to null for keep the existing setting, which defaults to 0.
Does not affect id_full.
number null no
kube_data_auth_enabled If true, use an aws_eks_cluster_auth data source to authenticate to the EKS cluster.
Disabled by kubeconfig_path_enabled or kube_exec_auth_enabled.
bool true no
kube_exec_auth_aws_profile The AWS config profile for aws eks get-token to use string "" no
kube_exec_auth_aws_profile_enabled If true, pass kube_exec_auth_aws_profile as the profile to aws eks get-token bool false no
kube_exec_auth_enabled If true, use the Kubernetes provider exec feature to execute aws eks get-token to authenticate to the EKS cluster.
Disabled by kubeconfig_path_enabled, overrides kube_data_auth_enabled.
bool false no
kube_exec_auth_role_arn The role ARN for aws eks get-token to use string "" no
kube_exec_auth_role_arn_enabled If true, pass kube_exec_auth_role_arn as the role ARN to aws eks get-token bool false no
kubeconfig_context Context to choose from the Kubernetes kube config file string "" no
kubeconfig_path The Kubernetes provider config_path setting to use when kubeconfig_path_enabled is true string "" no
kubeconfig_path_enabled If true, configure the Kubernetes provider with kubeconfig_path and use it for authenticating to the EKS cluster bool false no
kubernetes_config_map_ignore_role_changes Set to true to ignore IAM role changes in the Kubernetes Auth ConfigMap bool true no
kubernetes_version Desired Kubernetes master version. If you do not specify a value, the latest available version is used string "1.21" no
label_key_case Controls the letter case of the tags keys (label names) for tags generated by this module.
Does not affect keys of tags passed in via the tags input.
Possible values: lower, title, upper.
Default value: title.
string null no
label_order The order in which the labels (ID elements) appear in the id.
Defaults to ["namespace", "environment", "stage", "name", "attributes"].
You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.
list(string) null no
label_value_case Controls the letter case of ID elements (labels) as included in id,
set as tag values, and output by this module individually.
Does not affect values of tags passed in via the tags input.
Possible values: lower, title, upper and none (no transformation).
Set this to title and set delimiter to "" to yield Pascal Case IDs.
Default value: lower.
string null no
labels_as_tags Set of labels (ID elements) to include as tags in the tags output.
Default is to include all labels.
Tags with empty values will not be included in the tags output.
Set to [] to suppress all generated tags.
Notes:
The value of the name tag, if included, will be the id, not the name.
Unlike other null-label inputs, the initial setting of labels_as_tags cannot be
changed in later chained modules. Attempts to change it will be silently ignored.
set(string)
[
"default"
]
no
local_exec_interpreter shell to use for local_exec list(string)
[
"/bin/sh",
"-c"
]
no
map_additional_aws_accounts Additional AWS account numbers to add to config-map-aws-auth ConfigMap list(string) [] no
map_additional_iam_roles Additional IAM roles to add to config-map-aws-auth ConfigMap
list(object({
rolearn = string
username = string
groups = list(string)
}))
[] no
map_additional_iam_users Additional IAM users to add to config-map-aws-auth ConfigMap
list(object({
userarn = string
username = string
groups = list(string)
}))
[] no
name ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.
This is the only ID element not also included as a tag.
The "name" tag is set to the full id string. There is no tag with the value of the name input.
string null no
namespace ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique string null no
oidc_provider_enabled Create an IAM OIDC identity provider for the cluster, then you can create IAM roles to associate with a service account in the cluster, instead of using kiam or kube2iam. For more information, see https://docs.aws.amazon.com/eks/latest/userguide/enable-iam-roles-for-service-accounts.html bool false no
permissions_boundary If provided, all IAM roles will be created with this permissions boundary attached. string null no
public_access_cidrs Indicates which CIDR blocks can access the Amazon EKS public API server endpoint when enabled. EKS defaults this to a list with 0.0.0.0/0. list(string)
[
"0.0.0.0/0"
]
no
regex_replace_chars Terraform regular expression (regex) string.
Characters matching the regex will be removed from the ID elements.
If not set, "/[^a-zA-Z0-9-]/" is used to remove all characters other than hyphens, letters and digits.
string null no
region AWS Region string n/a yes
service_ipv4_cidr The CIDR block to assign Kubernetes service IP addresses from.
You can only specify a custom CIDR block when you create a cluster, changing this value will force a new cluster to be created.
string null no
stage ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' string null no
subnet_ids A list of subnet IDs to launch the cluster in list(string) n/a yes
tags Additional tags (e.g. {'BusinessUnit': 'XYZ'}).
Neither the tag keys nor the tag values will be modified by this module.
map(string) {} no
tenant ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for string null no
vpc_id VPC ID for the EKS cluster string n/a yes
wait_for_cluster_command local-exec command to execute to determine if the EKS cluster is healthy. Cluster endpoint are available as environment variable ENDPOINT string "curl --silent --fail --retry 60 --retry-delay 5 --retry-connrefused --insecure --output /dev/null $ENDPOINT/healthz" no
workers_role_arns List of Role ARNs of the worker nodes list(string) [] no
workers_security_group_ids DEPRECATED: Use allowed_security_group_ids instead.
Historical description: Security Group IDs of the worker nodes.
Historical default: []
list(string) [] no

Outputs

Name Description
cluster_encryption_config_enabled If true, Cluster Encryption Configuration is enabled
cluster_encryption_config_provider_key_alias Cluster Encryption Config KMS Key Alias ARN
cluster_encryption_config_provider_key_arn Cluster Encryption Config KMS Key ARN
cluster_encryption_config_resources Cluster Encryption Config Resources
eks_cluster_arn The Amazon Resource Name (ARN) of the cluster
eks_cluster_certificate_authority_data The Kubernetes cluster certificate authority data
eks_cluster_endpoint The endpoint for the Kubernetes API server
eks_cluster_id The name of the cluster
eks_cluster_identity_oidc_issuer The OIDC Identity issuer for the cluster
eks_cluster_identity_oidc_issuer_arn The OIDC Identity issuer ARN for the cluster that can be used to associate IAM roles with a service account
eks_cluster_managed_security_group_id Security Group ID that was created by EKS for the cluster. EKS creates a Security Group and applies it to ENI that is attached to EKS Control Plane master nodes and to any managed workloads
eks_cluster_role_arn ARN of the EKS cluster IAM role
eks_cluster_version The Kubernetes server version of the cluster
kubernetes_config_map_id ID of aws-auth Kubernetes ConfigMap
security_group_arn ARN of the created Security Group for the EKS cluster
security_group_id ID of the created Security Group for the EKS cluster
security_group_name Name of the created Security Group for the EKS cluster

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Contributors

Erik Osterman
Erik Osterman
Andriy Knysh
Andriy Knysh
Igor Rodionov
Igor Rodionov
Oscar
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Terraform module for provisioning an EKS cluster

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