mirror of https://github.com/hashicorp/consul
109 lines
4.5 KiB
Markdown
109 lines
4.5 KiB
Markdown
---
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layout: docs
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page_title: Secure Configuration - AWS ECS
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description: >-
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Secure Configuration of the Consul Service Mesh on AWS ECS (Elastic Container Service) with Terraform.
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---
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# Secure Configuration
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For a production-ready installation of Consul on ECS, you will need to make sure that the cluster is secured.
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A secure Consul cluster should include the following:
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1. [TLS Encryption](/docs/security/encryption#rpc-encryption-with-tls) for RPC communication between Consul clients and servers.
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1. [Gossip Encryption](/docs/security/encryption#gossip-encryption) for encrypting gossip traffic.
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1. [Access Control (ACLs)](/docs/security/acl) for authentication and authorization for Consul clients and services on the mesh.
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-> **NOTE:** This page assumes that you have already configured your Consul server with the above features.
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## Deploy ACL Controller
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Before deploying your service, you will need to deploy the [ACL controller](https://registry.terraform.io/modules/hashicorp/consul-ecs/aws/latest/submodules/acl-controller) so that it can provision the necessary tokens
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for tasks on the service mesh. To learn more about the ACL Controller, please see [Automatic ACL Token Provisioning](/docs/ecs/architecture#automatic-acl-token-provisioning).
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To deploy the controller, you will first need store an ACL token with `acl:write` privileges
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and a CA certificate for the Consul server in AWS Secrets Manager.
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```hcl
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resource "aws_secretsmanager_secret" "bootstrap_token" {
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name = "bootstrap-token"
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}
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resource "aws_secretsmanager_secret_version" "bootstrap_token" {
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secret_id = aws_secretsmanager_secret.bootstrap_token.id
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secret_string = "<bootstrap token>"
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}
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resource "aws_secretsmanager_secret" "ca_cert" {
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name = "server-ca-cert"
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}
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resource "aws_secretsmanager_secret_version" "ca_cert" {
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secret_id = aws_secretsmanager_secret.ca_cert.id
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secret_string = "<CA certificate for the Consul server's HTTPS endpoint>"
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}
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```
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Use the [`acl-controller` terraform module](https://registry.terraform.io/modules/hashicorp/consul-ecs/aws/latest/submodules/acl-controller?tab=inputs) to deploy the controller:
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```hcl
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module "acl_controller" {
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source = "hashicorp/consul/aws-ecs//modules/acl-controller"
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consul_bootstrap_token_secret_arn = aws_secretsmanager_secret.bootstrap_token.arn
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consul_server_http_addr = "https://consul-server.example.com:8501"
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consul_server_ca_cert_arn = aws_secretsmanager_secret.ca_cert.arn
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ecs_cluster_arn = "arn:aws:ecs:my-region:111111111111:cluster/consul-ecs"
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region = "my-region"
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subnets = ["subnet-abcdef123456789"]
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name_prefix = "consul-ecs"
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}
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```
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The `name_prefix` parameter is used to prefix any secrets that the ACL controller will
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update in AWS Secrets Manager.
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-> **NOTE:** Make sure that the `name_prefix` is unique for each ECS cluster where you are
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deploying this controller.
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## Deploy Services
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Once the ACL controller is up and running, you will be able to deploy services on the mesh using the [`mesh-task` module](https://registry.terraform.io/modules/hashicorp/consul-ecs/aws/latest/submodules/mesh-task).
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Start with the basic configuration for the [Task Module](/docs/ecs/terraform/install#task-module) and specify additional settings to make the configuration production-ready.
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First, you will need to create an AWS Secrets Manager secret for the gossip encryption key that the Consul clients
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should use.
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```hcl
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resource "aws_secretsmanager_secret" "gossip_key" {
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name = "gossip-encryption-key"
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}
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resource "aws_secretsmanager_secret_version" "gossip_key" {
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secret_id = aws_secretsmanager_secret.gossip_key.id
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secret_string = "<Gossip encryption key>"
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}
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```
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Next, add the following configurations to enable secure deployment. Note that the `acl_secret_name_prefix`
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should be the same as the `name_prefix` you provide to the ACL controller module.
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```hcl
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module "my_task" {
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source = "hashicorp/consul/aws-ecs//modules/mesh-task"
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family = "my_task"
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...
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tls = true
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consul_server_ca_cert_arn = aws_secretsmanager_secret.ca_cert.arn
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gossip_key_secret_arn = aws_secretsmanager_secret.gossip_key.arn
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acls = true
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consul_client_token_secret_arn = module.acl_controller.client_token_secret_arn
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acl_secret_name_prefix = "consul-ecs"
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}
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```
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Now you can deploy your services! Follow the rest of the steps in the [Installation instructions](/docs/ecs/terraform/install#task-module)
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to deploy and connect your services.
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