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# Local .terraform directories
**/.terraform/*
# .tfstate files
*.tfstate
*.tfstate.*
**/.idea
**/*.iml
**/.build-harness
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SHELL := /bin/bash
# List of targets the `readme` target should call before generating the readme
export README_DEPS ?= docs/targets.md docs/terraform.md
-include $(shell curl -sSL -o .build-harness "https://git.io/build-harness"; echo .build-harness)
## Lint terraform code
lint:
$(SELF) terraform/install terraform/get-modules terraform/get-plugins terraform/lint terraform/validate

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<!--
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-->
[![README Header][readme_header_img]][readme_header_link]
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# terraform-aws-eks-node-group [![Codefresh Build Status](https://g.codefresh.io/api/badges/pipeline/cloudposse/terraform-modules%2Fterraform-aws-eks-node-group?type=cf-1)](https://g.codefresh.io/public/accounts/cloudposse/pipelines/5dead6c731a1a7177ed48f8e) [![Latest Release](https://img.shields.io/github/release/cloudposse/terraform-aws-eks-node-group.svg)](https://github.com/cloudposse/terraform-aws-eks-node-group/releases/latest) [![Slack Community](https://slack.cloudposse.com/badge.svg)](https://slack.cloudposse.com)
Terraform module to provision an EKS Node Group for [Elastic Container Service for Kubernetes](https://aws.amazon.com/eks/).
Instantiate it multiple times to create many EKS node groups with specific settings such as GPUs, EC2 instance types, or autoscale parameters.
---
This project is part of our comprehensive ["SweetOps"](https://cpco.io/sweetops) approach towards DevOps.
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We literally have [*hundreds of terraform modules*][terraform_modules] that are Open Source and well-maintained. Check them out!
## Introduction
## Usage
**IMPORTANT:** The `master` branch is used in `source` just as an example. In your code, do not pin to `master` because there may be breaking changes between releases.
Instead pin to the release tag (e.g. `?ref=tags/x.y.z`) of one of our [latest releases](https://github.com/cloudposse/terraform-aws-eks-node-group/releases).
For a complete example, see [examples/complete](examples/complete).
For automated tests of the complete example using [bats](https://github.com/bats-core/bats-core) and [Terratest](https://github.com/gruntwork-io/terratest) (which tests and deploys the example on AWS), see [test](test).
```hcl
provider "aws" {
region = var.region
}
module "label" {
source = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.16.0"
namespace = var.namespace
name = var.name
stage = var.stage
delimiter = var.delimiter
attributes = compact(concat(var.attributes, list("cluster")))
tags = var.tags
}
locals {
tags = merge(module.label.tags, map("kubernetes.io/cluster/${module.label.id}", "shared"))
}
module "vpc" {
source = "git::https://github.com/cloudposse/terraform-aws-vpc.git?ref=tags/0.8.1"
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
cidr_block = var.vpc_cidr_block
tags = local.tags
}
module "subnets" {
source = "git::https://github.com/cloudposse/terraform-aws-dynamic-subnets.git?ref=tags/0.18.1"
availability_zones = var.availability_zones
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
vpc_id = module.vpc.vpc_id
igw_id = module.vpc.igw_id
cidr_block = module.vpc.vpc_cidr_block
nat_gateway_enabled = false
nat_instance_enabled = false
tags = local.tags
}
module "eks_cluster" {
source = "git::https://github.com/cloudposse/terraform-aws-eks-cluster.git?ref=tags/0.13.0"
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
tags = var.tags
region = var.region
vpc_id = module.vpc.vpc_id
subnet_ids = module.subnets.public_subnet_ids
kubernetes_version = var.kubernetes_version
kubeconfig_path = var.kubeconfig_path
oidc_provider_enabled = var.oidc_provider_enabled
workers_role_arns = [module.eks_node_group.eks_node_group_role_arn]
workers_security_group_ids = []
}
module "eks_node_group" {
source = "git::https://github.com/cloudposse/terraform-aws-eks-node-group.git?ref=master"
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
tags = var.tags
vpc_id = module.vpc.vpc_id
subnet_ids = module.subnets.public_subnet_ids
instance_types = var.instance_types
desired_size = var.desired_size
min_size = var.min_size
max_size = var.max_size
cluster_name = module.eks_cluster.eks_cluster_id
kubernetes_version = var.kubernetes_version
}
```
## Makefile Targets
```
Available targets:
help Help screen
help/all Display help for all targets
help/short This help short screen
lint Lint terraform code
```
## Inputs
| Name | Description | Type | Default | Required |
|------|-------------|:----:|:-----:|:-----:|
| ami_release_version | AMI version of the EKS Node Group. Defaults to latest version for Kubernetes version | string | `null` | no |
| ami_type | Type of Amazon Machine Image (AMI) associated with the EKS Node Group. Defaults to `AL2_x86_64`. Valid values: `AL2_x86_64`, `AL2_x86_64_GPU`. Terraform will only perform drift detection if a configuration value is provided | string | `AL2_x86_64` | no |
| attributes | Additional attributes (e.g. `1`) | list(string) | `<list>` | no |
| cluster_name | The name of the EKS cluster | string | - | yes |
| delimiter | Delimiter to be used between `namespace`, `stage`, `name` and `attributes` | string | `-` | no |
| desired_size | Desired number of worker nodes | number | - | yes |
| disk_size | Disk size in GiB for worker nodes. Defaults to 20. Terraform will only perform drift detection if a configuration value is provided | number | `20` | no |
| ec2_ssh_key | SSH key name that should be used to access the worker nodes | string | `null` | no |
| enabled | Whether to create the resources. Set to `false` to prevent the module from creating any resources | bool | `true` | no |
| existing_workers_role_policy_arns | List of existing policy ARNs that will be attached to the workers default role on creation | list(string) | `<list>` | no |
| existing_workers_role_policy_arns_count | Count of existing policy ARNs that will be attached to the workers default role on creation. Needed to prevent Terraform error `count can't be computed` | number | `0` | no |
| instance_types | Set of instance types associated with the EKS Node Group. Defaults to ["t3.medium"]. Terraform will only perform drift detection if a configuration value is provided | list(string) | - | yes |
| kubernetes_labels | Key-value mapping of Kubernetes labels. Only labels that are applied with the EKS API are managed by this argument. Other Kubernetes labels applied to the EKS Node Group will not be managed | map(string) | `<map>` | no |
| kubernetes_version | Kubernetes version. Defaults to EKS Cluster Kubernetes version. Terraform will only perform drift detection if a configuration value is provided | string | `null` | no |
| max_size | Maximum number of worker nodes | number | - | yes |
| min_size | Minimum number of worker nodes | number | - | yes |
| name | Solution name, e.g. 'app' or 'cluster' | string | - | yes |
| namespace | Namespace, which could be your organization name, e.g. 'eg' or 'cp' | string | `` | no |
| source_security_group_ids | Set of EC2 Security Group IDs to allow SSH access (port 22) from on the worker nodes. If you specify `ec2_ssh_key`, but do not specify this configuration when you create an EKS Node Group, port 22 on the worker nodes is opened to the Internet (0.0.0.0/0) | list(string) | `<list>` | no |
| stage | Stage, e.g. 'prod', 'staging', 'dev', or 'test' | string | `` | no |
| subnet_ids | A list of subnet IDs to launch resources in | list(string) | - | yes |
| tags | Additional tags (e.g. `{ BusinessUnit = "XYZ" }` | map(string) | `<map>` | no |
## Outputs
| Name | Description |
|------|-------------|
| eks_node_group_arn | Amazon Resource Name (ARN) of the EKS Node Group |
| eks_node_group_id | EKS Cluster name and EKS Node Group name separated by a colon |
| eks_node_group_resources | List of objects containing information about underlying resources of the EKS Node Group |
| eks_node_group_role_arn | ARN of the worker nodes IAM role |
| eks_node_group_role_name | Name of the worker nodes IAM role |
| eks_node_group_status | Status of the EKS Node Group |
## Share the Love
Like this project? Please give it a ★ on [our GitHub](https://github.com/cloudposse/terraform-aws-eks-node-group)! (it helps us **a lot**)
Are you using this project or any of our other projects? Consider [leaving a testimonial][testimonial]. =)
## Related Projects
Check out these related projects.
- [terraform-aws-eks-cluster](https://github.com/cloudposse/terraform-aws-eks-cluster) - Terraform module to provision an EKS cluster on AWS
- [terraform-aws-eks-workers](https://github.com/cloudposse/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](https://github.com/cloudposse/terraform-aws-ec2-autoscale-group) - Terraform module to provision Auto Scaling Group and Launch Template on AWS
- [terraform-aws-ecs-container-definition](https://github.com/cloudposse/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](https://github.com/cloudposse/terraform-aws-ecs-alb-service-task) - Terraform module which implements an ECS service which exposes a web service via ALB
- [terraform-aws-ecs-web-app](https://github.com/cloudposse/terraform-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](https://github.com/cloudposse/terraform-aws-ecs-codepipeline) - Terraform module for CI/CD with AWS Code Pipeline and Code Build for ECS
- [terraform-aws-ecs-cloudwatch-autoscaling](https://github.com/cloudposse/terraform-aws-ecs-cloudwatch-autoscaling) - Terraform module to autoscale ECS Service based on CloudWatch metrics
- [terraform-aws-ecs-cloudwatch-sns-alarms](https://github.com/cloudposse/terraform-aws-ecs-cloudwatch-sns-alarms) - Terraform module to create CloudWatch Alarms on ECS Service level metrics
- [terraform-aws-ec2-instance](https://github.com/cloudposse/terraform-aws-ec2-instance) - Terraform module for providing a general purpose EC2 instance
- [terraform-aws-ec2-instance-group](https://github.com/cloudposse/terraform-aws-ec2-instance-group) - Terraform module for provisioning multiple general purpose EC2 hosts for stateful applications
## Help
**Got a question?** We got answers.
File a GitHub [issue](https://github.com/cloudposse/terraform-aws-eks-node-group/issues), send us an [email][email] or join our [Slack Community][slack].
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## Slack Community
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## Contributing
### Bug Reports & Feature Requests
Please use the [issue tracker](https://github.com/cloudposse/terraform-aws-eks-node-group/issues) to report any bugs or file feature requests.
### Developing
If you are interested in being a contributor and want to get involved in developing this project or [help out](https://cpco.io/help-out) with our other projects, we would love to hear from you! Shoot us an [email][email].
In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.
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5. Submit a **Pull Request** so that we can review your changes
**NOTE:** Be sure to merge the latest changes from "upstream" before making a pull request!
## Copyright
Copyright © 2017-2019 [Cloud Posse, LLC](https://cpco.io/copyright)
## License
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## Trademarks
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## About
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Check out [our other projects][github], [follow us on twitter][twitter], [apply for a job][jobs], or [hire us][hire] to help with your cloud strategy and implementation.
### Contributors
| [![Erik Osterman][osterman_avatar]][osterman_homepage]<br/>[Erik Osterman][osterman_homepage] | [![Andriy Knysh][aknysh_avatar]][aknysh_homepage]<br/>[Andriy Knysh][aknysh_homepage] | [![Igor Rodionov][goruha_avatar]][goruha_homepage]<br/>[Igor Rodionov][goruha_homepage] |
|---|---|---|
[osterman_homepage]: https://github.com/osterman
[osterman_avatar]: https://img.cloudposse.com/150x150/https://github.com/osterman.png
[aknysh_homepage]: https://github.com/aknysh
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---
#
# This is the canonical configuration for the `README.md`
# Run `make readme` to rebuild the `README.md`
#
# Name of this project
name: terraform-aws-eks-node-group
# Logo for this project
#logo: docs/logo.png
# License of this project
license: "APACHE2"
# Canonical GitHub repo
github_repo: cloudposse/terraform-aws-eks-node-group
# Badges to display
badges:
- name: "Codefresh Build Status"
image: "https://g.codefresh.io/api/badges/pipeline/cloudposse/terraform-modules%2Fterraform-aws-eks-node-group?type=cf-1"
url: "https://g.codefresh.io/public/accounts/cloudposse/pipelines/5dead6c731a1a7177ed48f8e"
- name: "Latest Release"
image: "https://img.shields.io/github/release/cloudposse/terraform-aws-eks-node-group.svg"
url: "https://github.com/cloudposse/terraform-aws-eks-node-group/releases/latest"
- name: "Slack Community"
image: "https://slack.cloudposse.com/badge.svg"
url: "https://slack.cloudposse.com"
related:
- name: "terraform-aws-eks-cluster"
description: "Terraform module to provision an EKS cluster on AWS"
url: "https://github.com/cloudposse/terraform-aws-eks-cluster"
- name: "terraform-aws-eks-workers"
description: "Terraform module to provision an AWS AutoScaling Group, IAM Role, and Security Group for EKS Workers"
url: "https://github.com/cloudposse/terraform-aws-eks-workers"
- name: "terraform-aws-ec2-autoscale-group"
description: "Terraform module to provision Auto Scaling Group and Launch Template on AWS"
url: "https://github.com/cloudposse/terraform-aws-ec2-autoscale-group"
- name: "terraform-aws-ecs-container-definition"
description: "Terraform module to generate well-formed JSON documents (container definitions) that are passed to the aws_ecs_task_definition Terraform resource"
url: "https://github.com/cloudposse/terraform-aws-ecs-container-definition"
- name: "terraform-aws-ecs-alb-service-task"
description: "Terraform module which implements an ECS service which exposes a web service via ALB"
url: "https://github.com/cloudposse/terraform-aws-ecs-alb-service-task"
- name: "terraform-aws-ecs-web-app"
description: "Terraform module that implements a web app on ECS and supports autoscaling, CI/CD, monitoring, ALB integration, and much more"
url: "https://github.com/cloudposse/terraform-aws-ecs-web-app"
- name: "terraform-aws-ecs-codepipeline"
description: "Terraform module for CI/CD with AWS Code Pipeline and Code Build for ECS"
url: "https://github.com/cloudposse/terraform-aws-ecs-codepipeline"
- name: "terraform-aws-ecs-cloudwatch-autoscaling"
description: "Terraform module to autoscale ECS Service based on CloudWatch metrics"
url: "https://github.com/cloudposse/terraform-aws-ecs-cloudwatch-autoscaling"
- name: "terraform-aws-ecs-cloudwatch-sns-alarms"
description: "Terraform module to create CloudWatch Alarms on ECS Service level metrics"
url: "https://github.com/cloudposse/terraform-aws-ecs-cloudwatch-sns-alarms"
- name: "terraform-aws-ec2-instance"
description: "Terraform module for providing a general purpose EC2 instance"
url: "https://github.com/cloudposse/terraform-aws-ec2-instance"
- name: "terraform-aws-ec2-instance-group"
description: "Terraform module for provisioning multiple general purpose EC2 hosts for stateful applications"
url: "https://github.com/cloudposse/terraform-aws-ec2-instance-group"
# Short description of this project
description: |-
Terraform module to provision an EKS Node Group for [Elastic Container Service for Kubernetes](https://aws.amazon.com/eks/).
Instantiate it multiple times to create many EKS node groups with specific settings such as GPUs, EC2 instance types, or autoscale parameters.
introduction: |-
# How to use this project
usage: |-
For a complete example, see [examples/complete](examples/complete).
For automated tests of the complete example using [bats](https://github.com/bats-core/bats-core) and [Terratest](https://github.com/gruntwork-io/terratest) (which tests and deploys the example on AWS), see [test](test).
```hcl
provider "aws" {
region = var.region
}
module "label" {
source = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.16.0"
namespace = var.namespace
name = var.name
stage = var.stage
delimiter = var.delimiter
attributes = compact(concat(var.attributes, list("cluster")))
tags = var.tags
}
locals {
tags = merge(module.label.tags, map("kubernetes.io/cluster/${module.label.id}", "shared"))
}
module "vpc" {
source = "git::https://github.com/cloudposse/terraform-aws-vpc.git?ref=tags/0.8.1"
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
cidr_block = var.vpc_cidr_block
tags = local.tags
}
module "subnets" {
source = "git::https://github.com/cloudposse/terraform-aws-dynamic-subnets.git?ref=tags/0.18.1"
availability_zones = var.availability_zones
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
vpc_id = module.vpc.vpc_id
igw_id = module.vpc.igw_id
cidr_block = module.vpc.vpc_cidr_block
nat_gateway_enabled = false
nat_instance_enabled = false
tags = local.tags
}
module "eks_cluster" {
source = "git::https://github.com/cloudposse/terraform-aws-eks-cluster.git?ref=tags/0.13.0"
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
tags = var.tags
region = var.region
vpc_id = module.vpc.vpc_id
subnet_ids = module.subnets.public_subnet_ids
kubernetes_version = var.kubernetes_version
kubeconfig_path = var.kubeconfig_path
oidc_provider_enabled = var.oidc_provider_enabled
workers_role_arns = [module.eks_node_group.eks_node_group_role_arn]
workers_security_group_ids = []
}
module "eks_node_group" {
source = "git::https://github.com/cloudposse/terraform-aws-eks-node-group.git?ref=master"
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
tags = var.tags
vpc_id = module.vpc.vpc_id
subnet_ids = module.subnets.public_subnet_ids
instance_types = var.instance_types
desired_size = var.desired_size
min_size = var.min_size
max_size = var.max_size
cluster_name = module.eks_cluster.eks_cluster_id
kubernetes_version = var.kubernetes_version
}
```
include:
- "docs/targets.md"
- "docs/terraform.md"
# Contributors to this project
contributors:
- name: "Erik Osterman"
github: "osterman"
- name: "Andriy Knysh"
github: "aknysh"
- name: "Igor Rodionov"
github: "goruha"

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version: '1.0'
stages:
- Prepare
- Test
steps:
wait:
title: Wait
stage: Prepare
image: codefresh/cli:latest
commands:
- codefresh get builds --pipeline=${{CF_REPO_NAME}} --status running --limit 1000 -o json | jq --arg id ${{CF_BUILD_ID}} -ser 'flatten|.[-1].id==$id'
retry:
maxAttempts: 10
delay: 20
exponentialFactor: 1.1
main_clone:
title: "Clone repository"
type: git-clone
stage: Prepare
description: "Initialize"
repo: ${{CF_REPO_OWNER}}/${{CF_REPO_NAME}}
git: CF-default
revision: ${{CF_REVISION}}
clean_init:
title: Prepare build-harness and test-harness
image: ${{TEST_IMAGE}}
stage: Prepare
commands:
- cf_export PATH="/usr/local/terraform/0.12/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
- make init
- git -C build-harness checkout master
- make -C test/ clean init TEST_HARNESS_BRANCH=master
- make -C test/src clean init
- find . -type d -name '.terraform' | xargs rm -rf
- find . -type f -name 'terraform.tfstate*' -exec rm -f {} \;
test:
type: "parallel"
title: "Run tests"
description: "Run all tests in parallel"
stage: Test
steps:
test_readme_lint:
title: "Test README.md updated"
stage: "Test"
image: ${{TEST_IMAGE}}
description: Test "readme/lint"
commands:
- make readme/lint
test_module:
title: Test module with bats
image: ${{TEST_IMAGE}}
stage: Test
commands:
- make -C test/ module
test_examples_complete:
title: Test "examples/complete" with bats
image: ${{TEST_IMAGE}}
stage: Test
commands:
- make -C test/ examples/complete
test_examples_complete_terratest:
title: Test "examples/complete" with terratest
image: ${{TEST_IMAGE}}
stage: Test
commands:
- unset AWS_PROFILE
- unset AWS_DEFAULT_PROFILE
- unset AWS_MFA_PROFILE
- make -C test/src

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## Makefile Targets
```
Available targets:
help Help screen
help/all Display help for all targets
help/short This help short screen
lint Lint terraform code
```

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## Inputs
| Name | Description | Type | Default | Required |
|------|-------------|:----:|:-----:|:-----:|
| ami_release_version | AMI version of the EKS Node Group. Defaults to latest version for Kubernetes version | string | `null` | no |
| ami_type | Type of Amazon Machine Image (AMI) associated with the EKS Node Group. Defaults to `AL2_x86_64`. Valid values: `AL2_x86_64`, `AL2_x86_64_GPU`. Terraform will only perform drift detection if a configuration value is provided | string | `AL2_x86_64` | no |
| attributes | Additional attributes (e.g. `1`) | list(string) | `<list>` | no |
| cluster_name | The name of the EKS cluster | string | - | yes |
| delimiter | Delimiter to be used between `namespace`, `stage`, `name` and `attributes` | string | `-` | no |
| desired_size | Desired number of worker nodes | number | - | yes |
| disk_size | Disk size in GiB for worker nodes. Defaults to 20. Terraform will only perform drift detection if a configuration value is provided | number | `20` | no |
| ec2_ssh_key | SSH key name that should be used to access the worker nodes | string | `null` | no |
| enabled | Whether to create the resources. Set to `false` to prevent the module from creating any resources | bool | `true` | no |
| existing_workers_role_policy_arns | List of existing policy ARNs that will be attached to the workers default role on creation | list(string) | `<list>` | no |
| existing_workers_role_policy_arns_count | Count of existing policy ARNs that will be attached to the workers default role on creation. Needed to prevent Terraform error `count can't be computed` | number | `0` | no |
| instance_types | Set of instance types associated with the EKS Node Group. Defaults to ["t3.medium"]. Terraform will only perform drift detection if a configuration value is provided | list(string) | - | yes |
| kubernetes_labels | Key-value mapping of Kubernetes labels. Only labels that are applied with the EKS API are managed by this argument. Other Kubernetes labels applied to the EKS Node Group will not be managed | map(string) | `<map>` | no |
| kubernetes_version | Kubernetes version. Defaults to EKS Cluster Kubernetes version. Terraform will only perform drift detection if a configuration value is provided | string | `null` | no |
| max_size | Maximum number of worker nodes | number | - | yes |
| min_size | Minimum number of worker nodes | number | - | yes |
| name | Solution name, e.g. 'app' or 'cluster' | string | - | yes |
| namespace | Namespace, which could be your organization name, e.g. 'eg' or 'cp' | string | `` | no |
| source_security_group_ids | Set of EC2 Security Group IDs to allow SSH access (port 22) from on the worker nodes. If you specify `ec2_ssh_key`, but do not specify this configuration when you create an EKS Node Group, port 22 on the worker nodes is opened to the Internet (0.0.0.0/0) | list(string) | `<list>` | no |
| stage | Stage, e.g. 'prod', 'staging', 'dev', or 'test' | string | `` | no |
| subnet_ids | A list of subnet IDs to launch resources in | list(string) | - | yes |
| tags | Additional tags (e.g. `{ BusinessUnit = "XYZ" }` | map(string) | `<map>` | no |
## Outputs
| Name | Description |
|------|-------------|
| eks_node_group_arn | Amazon Resource Name (ARN) of the EKS Node Group |
| eks_node_group_id | EKS Cluster name and EKS Node Group name separated by a colon |
| eks_node_group_resources | List of objects containing information about underlying resources of the EKS Node Group |
| eks_node_group_role_arn | ARN of the worker nodes IAM role |
| eks_node_group_role_name | Name of the worker nodes IAM role |
| eks_node_group_status | Status of the EKS Node Group |

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region = "us-east-2"
availability_zones = ["us-east-2a", "us-east-2b"]
vpc_cidr_block = "172.16.0.0/16"
namespace = "eg"
stage = "test"
name = "eks-node-group"
instance_types = ["t3.small"]
desired_size = 2
max_size = 3
min_size = 2
disk_size = 20
kubeconfig_path = "/.kube/config"
kubernetes_labels = {}

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provider "aws" {
region = var.region
}
module "label" {
source = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.16.0"
namespace = var.namespace
name = var.name
stage = var.stage
delimiter = var.delimiter
attributes = compact(concat(var.attributes, list("cluster")))
tags = var.tags
}
locals {
tags = merge(module.label.tags, map("kubernetes.io/cluster/${module.label.id}", "shared"))
}
module "vpc" {
source = "git::https://github.com/cloudposse/terraform-aws-vpc.git?ref=tags/0.8.1"
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
cidr_block = var.vpc_cidr_block
tags = local.tags
}
module "subnets" {
source = "git::https://github.com/cloudposse/terraform-aws-dynamic-subnets.git?ref=tags/0.18.1"
availability_zones = var.availability_zones
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
vpc_id = module.vpc.vpc_id
igw_id = module.vpc.igw_id
cidr_block = module.vpc.vpc_cidr_block
nat_gateway_enabled = false
nat_instance_enabled = false
tags = local.tags
}
module "eks_cluster" {
source = "git::https://github.com/cloudposse/terraform-aws-eks-cluster.git?ref=tags/0.13.0"
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
tags = var.tags
region = var.region
vpc_id = module.vpc.vpc_id
subnet_ids = module.subnets.public_subnet_ids
kubernetes_version = var.kubernetes_version
kubeconfig_path = var.kubeconfig_path
oidc_provider_enabled = var.oidc_provider_enabled
workers_role_arns = [module.eks_node_group.eks_node_group_role_arn]
workers_security_group_ids = []
}
module "eks_node_group" {
source = "../../"
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
tags = var.tags
subnet_ids = module.subnets.public_subnet_ids
instance_types = var.instance_types
desired_size = var.desired_size
min_size = var.min_size
max_size = var.max_size
cluster_name = module.eks_cluster.eks_cluster_id
kubernetes_version = var.kubernetes_version
kubernetes_labels = var.kubernetes_labels
}

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output "public_subnet_cidrs" {
value = module.subnets.public_subnet_cidrs
description = "Public subnet CIDRs"
}
output "private_subnet_cidrs" {
value = module.subnets.private_subnet_cidrs
description = "Private subnet CIDRs"
}
output "vpc_cidr" {
value = module.vpc.vpc_cidr_block
description = "VPC ID"
}
output "eks_cluster_id" {
description = "The name of the cluster"
value = module.eks_cluster.eks_cluster_id
}
output "eks_cluster_arn" {
description = "The Amazon Resource Name (ARN) of the cluster"
value = module.eks_cluster.eks_cluster_arn
}
output "eks_cluster_endpoint" {
description = "The endpoint for the Kubernetes API server"
value = module.eks_cluster.eks_cluster_endpoint
}
output "eks_cluster_version" {
description = "The Kubernetes server version of the cluster"
value = module.eks_cluster.eks_cluster_version
}
output "eks_cluster_identity_oidc_issuer" {
description = "The OIDC Identity issuer for the cluster"
value = module.eks_cluster.eks_cluster_identity_oidc_issuer
}
output "eks_node_group_role_arn" {
description = "ARN of the worker nodes IAM role"
value = module.eks_node_group.eks_node_group_role_arn
}
output "eks_node_group_role_name" {
description = "Name of the worker nodes IAM role"
value = module.eks_node_group.eks_node_group_role_name
}
output "eks_node_group_id" {
description = "EKS Cluster name and EKS Node Group name separated by a colon"
value = module.eks_node_group.eks_node_group_id
}
output "eks_node_group_arn" {
description = "Amazon Resource Name (ARN) of the EKS Node Group"
value = module.eks_node_group.eks_node_group_arn
}
output "eks_node_group_resources" {
description = "List of objects containing information about underlying resources of the EKS Node Group"
value = module.eks_node_group.eks_node_group_resources
}
output "eks_node_group_status" {
description = "Status of the EKS Node Group"
value = module.eks_node_group.eks_node_group_status
}

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variable "region" {
type = string
description = "AWS Region"
}
variable "availability_zones" {
type = list(string)
description = "List of availability zones"
}
variable "vpc_cidr_block" {
type = string
description = "VPC CIDR block"
}
variable "namespace" {
type = string
description = "Namespace, which could be your organization name, e.g. 'eg' or 'cp'"
}
variable "stage" {
type = string
description = "Stage, e.g. 'prod', 'staging', 'dev' or 'testing'"
}
variable "name" {
type = string
description = "Solution name, e.g. 'app' or 'cluster'"
}
variable "delimiter" {
type = string
default = "-"
description = "Delimiter to be used between `name`, `namespace`, `stage`, etc."
}
variable "attributes" {
type = list(string)
default = []
description = "Additional attributes (e.g. `1`)"
}
variable "tags" {
type = map(string)
default = {}
description = "Additional tags (e.g. `map('BusinessUnit`,`XYZ`)"
}
variable "kubernetes_version" {
type = string
default = null
description = "Desired Kubernetes master version. If you do not specify a value, the latest available version is used"
}
variable "desired_size" {
type = number
description = "Desired number of worker nodes"
}
variable "max_size" {
type = number
description = "The maximum size of the AutoScaling Group"
}
variable "min_size" {
type = number
description = "The minimum size of the AutoScaling Group"
}
variable "oidc_provider_enabled" {
type = bool
default = false
description = "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"
}
variable "kubeconfig_path" {
type = string
description = "The path to `kubeconfig` file"
}
variable "disk_size" {
type = number
description = "Disk size in GiB for worker nodes. Defaults to 20. Terraform will only perform drift detection if a configuration value is provided"
}
variable "instance_types" {
type = list(string)
description = "Set of instance types associated with the EKS Node Group. Defaults to [\"t3.medium\"]. Terraform will only perform drift detection if a configuration value is provided"
}
variable "kubernetes_labels" {
type = map(string)
description = "Key-value mapping of Kubernetes labels. Only labels that are applied with the EKS API are managed by this argument. Other Kubernetes labels applied to the EKS Node Group will not be managed"
}

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terraform {
required_version = "~> 0.12.0"
required_providers {
aws = "~> 2.0"
template = "~> 2.0"
null = "~> 2.0"
local = "~> 1.3"
}
}

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locals {
tags = merge(
var.tags,
{
"kubernetes.io/cluster/${var.cluster_name}" = "owned"
}
)
}
module "label" {
source = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.16.0"
namespace = var.namespace
stage = var.stage
name = var.name
delimiter = var.delimiter
attributes = compact(concat(var.attributes, ["workers"]))
tags = local.tags
enabled = var.enabled
}
data "aws_iam_policy_document" "assume_role" {
count = var.enabled ? 1 : 0
statement {
effect = "Allow"
actions = ["sts:AssumeRole"]
principals {
type = "Service"
identifiers = ["ec2.amazonaws.com"]
}
}
}
resource "aws_iam_role" "default" {
count = var.enabled ? 1 : 0
name = module.label.id
assume_role_policy = join("", data.aws_iam_policy_document.assume_role.*.json)
tags = module.label.tags
}
resource "aws_iam_role_policy_attachment" "amazon_eks_worker_node_policy" {
count = var.enabled ? 1 : 0
policy_arn = "arn:aws:iam::aws:policy/AmazonEKSWorkerNodePolicy"
role = join("", aws_iam_role.default.*.name)
}
resource "aws_iam_role_policy_attachment" "amazon_eks_cni_policy" {
count = var.enabled ? 1 : 0
policy_arn = "arn:aws:iam::aws:policy/AmazonEKS_CNI_Policy"
role = join("", aws_iam_role.default.*.name)
}
resource "aws_iam_role_policy_attachment" "amazon_ec2_container_registry_read_only" {
count = var.enabled ? 1 : 0
policy_arn = "arn:aws:iam::aws:policy/AmazonEC2ContainerRegistryReadOnly"
role = join("", aws_iam_role.default.*.name)
}
resource "aws_iam_role_policy_attachment" "existing_policies_for_eks_workers_role" {
count = var.enabled ? var.existing_workers_role_policy_arns_count : 0
policy_arn = var.existing_workers_role_policy_arns[count.index]
role = join("", aws_iam_role.default.*.name)
}
resource "aws_eks_node_group" "default" {
count = var.enabled ? 1 : 0
cluster_name = var.cluster_name
node_group_name = module.label.id
node_role_arn = join("", aws_iam_role.default.*.arn)
subnet_ids = var.subnet_ids
ami_type = var.ami_type
disk_size = var.disk_size
instance_types = var.instance_types
labels = var.kubernetes_labels
release_version = var.ami_release_version
version = var.kubernetes_version
tags = module.label.tags
scaling_config {
desired_size = var.desired_size
max_size = var.max_size
min_size = var.min_size
}
dynamic "remote_access" {
for_each = var.ec2_ssh_key != null && var.ec2_ssh_key != "" ? ["true"] : []
content {
ec2_ssh_key = var.ec2_ssh_key
source_security_group_ids = var.source_security_group_ids
}
}
# Ensure that IAM Role permissions are created before and deleted after EKS Node Group handling.
# Otherwise, EKS will not be able to properly delete EC2 Instances and Elastic Network Interfaces.
depends_on = [
aws_iam_role_policy_attachment.amazon_eks_worker_node_policy,
aws_iam_role_policy_attachment.amazon_eks_cni_policy,
aws_iam_role_policy_attachment.amazon_ec2_container_registry_read_only
]
}

29
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output "eks_node_group_role_arn" {
description = "ARN of the worker nodes IAM role"
value = join("", aws_iam_role.default.*.arn)
}
output "eks_node_group_role_name" {
description = "Name of the worker nodes IAM role"
value = join("", aws_iam_role.default.*.name)
}
output "eks_node_group_id" {
description = "EKS Cluster name and EKS Node Group name separated by a colon"
value = join("", aws_eks_node_group.default.*.id)
}
output "eks_node_group_arn" {
description = "Amazon Resource Name (ARN) of the EKS Node Group"
value = join("", aws_eks_node_group.default.*.arn)
}
output "eks_node_group_resources" {
description = "List of objects containing information about underlying resources of the EKS Node Group"
value = var.enabled ? aws_eks_node_group.default.0.resources : []
}
output "eks_node_group_status" {
description = "Status of the EKS Node Group"
value = join("", aws_eks_node_group.default.*.status)
}

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test/.gitignore vendored Normal file
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.test-harness

43
test/Makefile Normal file
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TEST_HARNESS ?= https://github.com/cloudposse/test-harness.git
TEST_HARNESS_BRANCH ?= master
TEST_HARNESS_PATH = $(realpath .test-harness)
BATS_ARGS ?= --tap
BATS_LOG ?= test.log
# Define a macro to run the tests
define RUN_TESTS
@echo "Running tests in $(1)"
@cd $(1) && bats $(BATS_ARGS) $(addsuffix .bats,$(addprefix $(TEST_HARNESS_PATH)/test/terraform/,$(TESTS)))
endef
default: all
-include Makefile.*
## Provision the test-harnesss
.test-harness:
[ -d $@ ] || git clone --depth=1 -b $(TEST_HARNESS_BRANCH) $(TEST_HARNESS) $@
## Initialize the tests
init: .test-harness
## Install all dependencies (OS specific)
deps::
@exit 0
## Clean up the test harness
clean:
[ "$(TEST_HARNESS_PATH)" == "/" ] || rm -rf $(TEST_HARNESS_PATH)
## Run all tests
all: module examples/complete
## Run basic sanity checks against the module itself
module: export TESTS ?= installed lint get-modules module-pinning get-plugins provider-pinning validate terraform-docs input-descriptions output-descriptions
module: deps
$(call RUN_TESTS, ../)
## Run tests against example
examples/complete: export TESTS ?= installed lint get-modules get-plugins validate
examples/complete: deps
$(call RUN_TESTS, ../$@)

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ifneq (,$(wildcard /sbin/apk))
## Install all dependencies for alpine
deps:: init
@apk add --update terraform-docs@cloudposse json2hcl@cloudposse
endif

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.gopath
vendor/

92
test/src/Gopkg.lock generated Normal file
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# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
[[projects]]
digest = "1:ffe9824d294da03b391f44e1ae8281281b4afc1bdaa9588c9097785e3af10cec"
name = "github.com/davecgh/go-spew"
packages = ["spew"]
pruneopts = "UT"
revision = "8991bc29aa16c548c550c7ff78260e27b9ab7c73"
version = "v1.1.1"
[[projects]]
digest = "1:75d6042fc66aebc974cc49b0c6c7cc3b9adb5f8130fbfa0dbec0820d990afa25"
name = "github.com/gruntwork-io/terratest"
packages = [
"modules/collections",
"modules/customerrors",
"modules/files",
"modules/logger",
"modules/retry",
"modules/shell",
"modules/ssh",
"modules/terraform",
]
pruneopts = "UT"
revision = "892abb2c35878d0808101bbfe6559e931dc2d354"
version = "v0.16.0"
[[projects]]
digest = "1:0028cb19b2e4c3112225cd871870f2d9cf49b9b4276531f03438a88e94be86fe"
name = "github.com/pmezard/go-difflib"
packages = ["difflib"]
pruneopts = "UT"
revision = "792786c7400a136282c1664665ae0a8db921c6c2"
version = "v1.0.0"
[[projects]]
digest = "1:5da8ce674952566deae4dbc23d07c85caafc6cfa815b0b3e03e41979cedb8750"
name = "github.com/stretchr/testify"
packages = [
"assert",
"require",
]
pruneopts = "UT"
revision = "ffdc059bfe9ce6a4e144ba849dbedead332c6053"
version = "v1.3.0"
[[projects]]
branch = "master"
digest = "1:831470c2758c8b733941144f2803a0ccad0632c5a767415b777ebd296b5f463e"
name = "golang.org/x/crypto"
packages = [
"curve25519",
"ed25519",
"ed25519/internal/edwards25519",
"internal/chacha20",
"internal/subtle",
"poly1305",
"ssh",
"ssh/agent",
]
pruneopts = "UT"
revision = "22d7a77e9e5f409e934ed268692e56707cd169e5"
[[projects]]
branch = "master"
digest = "1:76ee51c3f468493aff39dbacc401e8831fbb765104cbf613b89bef01cf4bad70"
name = "golang.org/x/net"
packages = ["context"]
pruneopts = "UT"
revision = "f3200d17e092c607f615320ecaad13d87ad9a2b3"
[[projects]]
branch = "master"
digest = "1:181f3fd33e620b958b5ab77da177cf775cdcccd7db82963607875fbd09ae995e"
name = "golang.org/x/sys"
packages = [
"cpu",
"unix",
]
pruneopts = "UT"
revision = "9cd6430ef91e39e1a0ec0470cf1321a33ef1b887"
[solve-meta]
analyzer-name = "dep"
analyzer-version = 1
input-imports = [
"github.com/gruntwork-io/terratest/modules/terraform",
"github.com/stretchr/testify/assert",
]
solver-name = "gps-cdcl"
solver-version = 1

7
test/src/Gopkg.toml Normal file
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[[constraint]]
name = "github.com/stretchr/testify"
version = "1.2.2"
[prune]
go-tests = true
unused-packages = true

50
test/src/Makefile Normal file
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PACKAGE = terraform-aws-eks-node-group
GOEXE ?= /usr/bin/go
GOPATH = $(CURDIR)/.gopath
GOBIN = $(GOPATH)/bin
BASE = $(GOPATH)/src/$(PACKAGE)
PATH := $(PATH):$(GOBIN)
export TF_DATA_DIR ?= $(CURDIR)/.terraform
export TF_CLI_ARGS_init ?= -get-plugins=true
export GOPATH
.PHONY: all
## Default target
all: test
ifneq (,$(wildcard /sbin/apk))
## Install go, if not installed
$(GOEXE):
apk add --update go
endif
ifeq ($(shell uname -s),Linux)
## Install all `dep`, if not installed
$(GOBIN)/dep:
@mkdir -p $(GOBIN)
@curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
endif
## Prepare the GOPATH
$(BASE): $(GOEXE)
@mkdir -p $(dir $@)
@ln -sf $(CURDIR) $@
## Download vendor dependencies to vendor/
$(BASE)/vendor: $(BASE) $(GOBIN)/dep
cd $(BASE) && dep ensure
.PHONY : init
## Initialize tests
init: $(BASE)/vendor
.PHONY : test
## Run tests
test: init
cd $(BASE) && go test -v -timeout 60m -run TestExamplesComplete
.PHONY : clean
## Clean up files
clean:
rm -rf .gopath/ vendor/ $(TF_DATA_DIR)

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package test
import (
"fmt"
"sync/atomic"
"testing"
"time"
"github.com/gruntwork-io/terratest/modules/terraform"
"github.com/stretchr/testify/assert"
corev1 "k8s.io/api/core/v1"
"k8s.io/client-go/informers"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/tools/clientcmd"
)
// Test the Terraform module in examples/complete using Terratest.
func TestExamplesComplete(t *testing.T) {
t.Parallel()
terraformOptions := &terraform.Options{
// The path to where our Terraform code is located
TerraformDir: "../../examples/complete",
Upgrade: true,
// Variables to pass to our Terraform code using -var-file options
VarFiles: []string{"fixtures.us-east-2.tfvars"},
}
// At the end of the test, run `terraform destroy` to clean up any resources that were created
defer terraform.Destroy(t, terraformOptions)
// This will run `terraform init` and `terraform apply` and fail the test if there are any errors
terraform.InitAndApply(t, terraformOptions)
// Run `terraform output` to get the value of an output variable
vpcCidr := terraform.Output(t, terraformOptions, "vpc_cidr")
// Verify we're getting back the outputs we expect
assert.Equal(t, "172.16.0.0/16", vpcCidr)
// Run `terraform output` to get the value of an output variable
privateSubnetCidrs := terraform.OutputList(t, terraformOptions, "private_subnet_cidrs")
// Verify we're getting back the outputs we expect
assert.Equal(t, []string{"172.16.0.0/19", "172.16.32.0/19"}, privateSubnetCidrs)
// Run `terraform output` to get the value of an output variable
publicSubnetCidrs := terraform.OutputList(t, terraformOptions, "public_subnet_cidrs")
// Verify we're getting back the outputs we expect
assert.Equal(t, []string{"172.16.96.0/19", "172.16.128.0/19"}, publicSubnetCidrs)
// Run `terraform output` to get the value of an output variable
eksClusterId := terraform.Output(t, terraformOptions, "eks_cluster_id")
// Verify we're getting back the outputs we expect
assert.Equal(t, "eg-test-eks-node-group-cluster", eksClusterId)
// Run `terraform output` to get the value of an output variable
eksNodeGroupId := terraform.Output(t, terraformOptions, "eks_node_group_id")
// Verify we're getting back the outputs we expect
assert.Equal(t, "eg-test-eks-node-group-cluster:eg-test-eks-node-group-workers", eksNodeGroupId)
// Run `terraform output` to get the value of an output variable
eksNodeGroupRoleName := terraform.Output(t, terraformOptions, "eks_node_group_role_name")
// Verify we're getting back the outputs we expect
assert.Equal(t, "eg-test-eks-node-group-workers", eksNodeGroupRoleName)
// Run `terraform output` to get the value of an output variable
eksNodeGroupStatus := terraform.Output(t, terraformOptions, "eks_node_group_status")
// Verify we're getting back the outputs we expect
assert.Equal(t, "ACTIVE", eksNodeGroupStatus)
// Wait for the worker nodes from Node Group to join the cluster
// https://github.com/kubernetes/client-go
// https://www.rushtehrani.com/post/using-kubernetes-api
// https://rancher.com/using-kubernetes-api-go-kubecon-2017-session-recap
// https://gianarb.it/blog/kubernetes-shared-informer
fmt.Println("Waiting for worker nodes from Node Group to join the EKS cluster")
kubeconfigPath := "/.kube/config"
config, err := clientcmd.BuildConfigFromFlags("", kubeconfigPath)
assert.NoError(t, err)
clientset, err := kubernetes.NewForConfig(config)
assert.NoError(t, err)
factory := informers.NewSharedInformerFactory(clientset, 0)
informer := factory.Core().V1().Nodes().Informer()
stopChannel := make(chan struct{})
var countOfWorkerNodes uint64 = 0
informer.AddEventHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
node := obj.(*corev1.Node)
fmt.Printf("Worker Node %s has joined the EKS cluster at %s\n", node.Name, node.CreationTimestamp)
atomic.AddUint64(&countOfWorkerNodes, 1)
if countOfWorkerNodes > 1 {
close(stopChannel)
}
},
})
go informer.Run(stopChannel)
select {
case <-stopChannel:
msg := "All worker nodes from Node Group have joined the EKS cluster"
fmt.Println(msg)
case <-time.After(5 * time.Minute):
msg := "Not all worker nodes from Node Group have joined the EKS cluster"
fmt.Println(msg)
assert.Fail(t, msg)
}
}

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variable "namespace" {
type = string
description = "Namespace, which could be your organization name, e.g. 'eg' or 'cp'"
default = ""
}
variable "stage" {
type = string
description = "Stage, e.g. 'prod', 'staging', 'dev', or 'test'"
default = ""
}
variable "name" {
type = string
description = "Solution name, e.g. 'app' or 'cluster'"
}
variable "delimiter" {
type = string
default = "-"
description = "Delimiter to be used between `namespace`, `stage`, `name` and `attributes`"
}
variable "attributes" {
type = list(string)
default = []
description = "Additional attributes (e.g. `1`)"
}
variable "tags" {
type = map(string)
default = {}
description = "Additional tags (e.g. `{ BusinessUnit = \"XYZ\" }`"
}
variable "enabled" {
type = bool
description = "Whether to create the resources. Set to `false` to prevent the module from creating any resources"
default = true
}
variable "cluster_name" {
type = string
description = "The name of the EKS cluster"
}
variable "ec2_ssh_key" {
type = string
description = "SSH key name that should be used to access the worker nodes"
default = null
}
variable "desired_size" {
type = number
description = "Desired number of worker nodes"
}
variable "max_size" {
type = number
description = "Maximum number of worker nodes"
}
variable "min_size" {
type = number
description = "Minimum number of worker nodes"
}
variable "subnet_ids" {
description = "A list of subnet IDs to launch resources in"
type = list(string)
}
variable "existing_workers_role_policy_arns" {
type = list(string)
default = []
description = "List of existing policy ARNs that will be attached to the workers default role on creation"
}
variable "existing_workers_role_policy_arns_count" {
type = number
default = 0
description = "Count of existing policy ARNs that will be attached to the workers default role on creation. Needed to prevent Terraform error `count can't be computed`"
}
variable "ami_type" {
type = string
description = "Type of Amazon Machine Image (AMI) associated with the EKS Node Group. Defaults to `AL2_x86_64`. Valid values: `AL2_x86_64`, `AL2_x86_64_GPU`. Terraform will only perform drift detection if a configuration value is provided"
default = "AL2_x86_64"
}
variable "disk_size" {
type = number
description = "Disk size in GiB for worker nodes. Defaults to 20. Terraform will only perform drift detection if a configuration value is provided"
default = 20
}
variable "instance_types" {
type = list(string)
description = "Set of instance types associated with the EKS Node Group. Defaults to [\"t3.medium\"]. Terraform will only perform drift detection if a configuration value is provided"
}
variable "kubernetes_labels" {
type = map(string)
description = "Key-value mapping of Kubernetes labels. Only labels that are applied with the EKS API are managed by this argument. Other Kubernetes labels applied to the EKS Node Group will not be managed"
default = {}
}
variable "ami_release_version" {
type = string
description = "AMI version of the EKS Node Group. Defaults to latest version for Kubernetes version"
default = null
}
variable "kubernetes_version" {
type = string
description = "Kubernetes version. Defaults to EKS Cluster Kubernetes version. Terraform will only perform drift detection if a configuration value is provided"
default = null
}
variable "source_security_group_ids" {
type = list(string)
default = []
description = "Set of EC2 Security Group IDs to allow SSH access (port 22) from on the worker nodes. If you specify `ec2_ssh_key`, but do not specify this configuration when you create an EKS Node Group, port 22 on the worker nodes is opened to the Internet (0.0.0.0/0)"
}

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terraform {
required_version = "~> 0.12.0"
required_providers {
aws = "~> 2.0"
template = "~> 2.0"
local = "~> 1.3"
}
}