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terraform-aws-kops-external-dns

Terraform module to provision an IAM role for external-dns running in a Kops cluster, and attach an IAM policy to the role with permissions to modify Route53 record sets.

Overview

This module assumes you are running external-dns in a Kops cluster.

It will provision an IAM role with the required permissions and grant the Kops masters the permission to assume it.

This is useful to make Kubernetes services discoverable via AWS DNS services.

The module uses terraform-aws-kops-metadata to lookup resources within a Kops cluster for easier integration with Terraform.

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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!

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.

module "kops_external_dns" {
  source         = "git::https://github.com/cloudposse/terraform-aws-kops-external-dns.git?ref=tags/<release-tag>"
  namespace      = "cp"
  stage          = "prod"
  name           = "external-dns"
  cluster_name   = "us-east-1.cloudposse.co"
  dns_zone_names = ["us-east-1.cloudposse.co", "cloudposse.co"]
  masters_name   = "masters"
  nodes_name     = "nodes"

  tags = {
    Cluster = "us-east-1.cloudposse.co"
  }
}

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
attributes	Additional attributes (e.g. `1`)	list	`<list>`	no
cluster_name	Kops cluster name (e.g. `us-east-1.cloudposse.co` or `cluster-1.cloudposse.co`)	string	-	yes
delimiter	Delimiter to be used between `namespace`, `stage`, `name` and `attributes`	string	`-`	no
dns_zone_names	Names of zones to manage (e.g. `us-east-1.cloudposse.co` or `cluster-1.cloudposse.co`)	list	-	yes
iam_role_max_session_duration	The maximum session duration (in seconds) for the role. Can have a value from 1 hour to 12 hours	string	`3600`	no
masters_name	Kops masters subdomain name in the cluster DNS zone	string	`masters`	no
name	Name (e.g. `external-dns`)	string	`external-dns`	no
namespace	Namespace (e.g. `cp` or `cloudposse`)	string	-	yes
nodes_name	Kops nodes subdomain name in the cluster DNS zone	string	`nodes`	no
stage	Stage (e.g. `prod`, `dev`, `staging`)	string	-	yes
tags	Additional tags (e.g. map(`Cluster`,`us-east-1.cloudposse.co`)	map	`<map>`	no

Outputs

Name	Description
policy_arn	IAM policy ARN
policy_id	IAM policy ID
policy_name	IAM policy name
role_arn	IAM role ARN
role_name	IAM role name
role_unique_id	IAM role unique ID

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Related Projects

Check out these related projects.

terraform-aws-kops-metadata - Terraform module to lookup resources within a Kops cluster for easier integration with Terraform
terraform-aws-kops-ecr - Terraform module to provision an ECR repository and grant users and kubernetes nodes access to it.
terraform-aws-kops-state-backend - Easily bootstrap kops clusters (DNS & S3 Bucket)
terraform-aws-kops-vpc-peering - Terraform module to create a peering connection between a backing services VPC and a VPC created by Kops
terraform-aws-kops-route53 - Terraform module to lookup the IAM role associated with kops masters, and attach an IAM policy to the role with permissions to modify Route53 record sets
terraform-aws-kops-vault-backend - Terraform module to provision an S3 bucket for HashiCorp Vault secrets storage, and an IAM role and policy with permissions for Kops nodes to access the bucket
terraform-aws-kops-chart-repo - Terraform module to provision an S3 bucket for Helm chart repository, and an IAM role and policy with permissions for Kops nodes to access the bucket

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Copyright

License

See LICENSE for full details.

Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
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with the License.  You may obtain a copy of the License at

  https://www.apache.org/licenses/LICENSE-2.0

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Contributors

<br/>Igor Rodionov	<br/>Andriy Knysh