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.gitignore

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# Local .terraform directories
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**/.terraform/*
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# .tfstate files
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*.tfstate
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*.tfstate.*
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# Crash log files
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crash.log
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crash.*.log
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# Exclude all .tfvars files, which are likely to contain sensitive data, such as
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# password, private keys, and other secrets. These should not be part of version
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# control as they are data points which are potentially sensitive and subject
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# to change depending on the environment.
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*.tfvars
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*.tfvars.json
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# Ignore override files as they are usually used to override resources locally and so
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# are not checked in
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override.tf
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override.tf.json
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*_override.tf
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*_override.tf.json
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# Include override files you do wish to add to version control using negated pattern
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# !example_override.tf
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# Include tfplan files to ignore the plan output of command: terraform plan -out=tfplan
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# example: *tfplan*
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# Ignore CLI configuration files
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.terraformrc
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terraform.rc
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# Editor config
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.idea/

LICENSE

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README.md

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# terraform-aws-ecs-secrets-manager
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Terraform module to create a SecretManager secret and generate secrets definition to be injected in the ECS Container definition.
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This module uses the recommended way of passing sensitive data from SecretManager to ECS Task without hardcoding any sensitive data in the ECS Container definition.
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## Usage
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```hcl
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module "secrets" {
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source = "exlabs/ecs-secrets-manager/aws"
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name = "data-pipeline-secrets"
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ecs_task_execution_role = "ecs-task-execution-role"
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secret_names = [
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"STRIPE_PUBLIC_KEY",
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"STRIPE_SECRET_KEY",
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"STRIPE_WEBHOOK_SECRET"
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]
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}
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resource "aws_ecs_task_definition" "data_pipeline" {
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#...
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container_definitions = <<TASK_DEFINITION
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[
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{
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"secrets": ${jsonencode(module.secrets.ecs_secrets)},
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#...
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}
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]
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TASK_DEFINITION
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}
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```
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After `terraform apply` you have to go to the AWS Console SecretsManager dashboard, select created secret and set values by creating a key-value pair for each defined secret name.
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## Providers
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| Name | Version |
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|------|---------|
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| <a name="provider_aws"></a> [aws](#provider\_aws) | n/a |
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## Resources
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| Name | Type |
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|------|------|
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| [aws_iam_policy.secrets_access](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_policy) | resource |
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| [aws_iam_role_policy_attachment.secret_access](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_role_policy_attachment) | resource |
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| [aws_secretsmanager_secret.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/secretsmanager_secret) | resource |
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| [aws_iam_policy_document.secrets_policy](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
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| [aws_iam_role.ecs_task_execution_role](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_role) | data source |
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## Inputs
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| Name | Description | Type | Default | Required |
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|------|-------------|------|---------|:--------:|
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| <a name="input_ecs_task_execution_role"></a> [ecs\_task\_execution\_role](#input\_ecs\_task\_execution\_role) | ECS task execution role name | `string` | n/a | yes |
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| <a name="input_name"></a> [name](#input\_name) | AWS SecretsManager secret name | `string` | n/a | yes |
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| <a name="input_secret_names"></a> [secret\_names](#input\_secret\_names) | Secret names that will be injected as env variables | `list(string)` | n/a | yes |
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## Outputs
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| Name | Description |
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|------|-------------|
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| <a name="output_ecs_secrets"></a> [ecs\_secrets](#output\_ecs\_secrets) | Secrets description to be injected in the ECS Container definition. |
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<!-- END_TF_DOCS -->

main.tf

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data "aws_iam_role" "ecs_task_execution_role" {
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name = var.ecs_task_execution_role
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}
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data aws_iam_policy_document secrets_policy {
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statement {
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effect = "Allow"
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principals {
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identifiers = [data.aws_iam_role.ecs_task_execution_role.arn]
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type = "AWS"
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}
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actions = [
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"secretsmanager:GetSecret",
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"secretsmanager:GetSecretValue"
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]
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resources = ["*"]
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}
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}
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resource "aws_secretsmanager_secret" "default" {
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name = var.name
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policy = data.aws_iam_policy_document.secrets_policy.json
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}
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resource aws_iam_policy secrets_access {
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policy = <<-POLICY
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{
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"Version": "2012-10-17",
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"Statement": [
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{
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"Effect": "Allow",
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"Action": [
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"secretsmanager:GetResourcePolicy",
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"secretsmanager:GetSecretValue",
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"secretsmanager:DescribeSecret",
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"secretsmanager:ListSecretVersionIds"
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],
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"Resource": [
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"${aws_secretsmanager_secret.default.arn}"
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]
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}
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]
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}
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POLICY
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}
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resource aws_iam_role_policy_attachment secret_access {
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role = var.ecs_task_execution_role
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policy_arn = aws_iam_policy.secrets_access.arn
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}
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locals {
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ecs_secrets = [
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for secret_name in var.secret_names :{
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name = secret_name
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valueFrom = "${aws_secretsmanager_secret.default.arn}:${secret_name}::"
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}
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]
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}

outputs.tf

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output "ecs_secrets" {
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value = local.ecs_secrets
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description = "Secrets description to be injected in the ECS Container definition."
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}

variables.tf

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variable "name" {
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description = "AWS SecretsManager secret name"
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type = string
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}
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variable "ecs_task_execution_role" {
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description = "ECS task execution role name"
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type = string
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}
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variable "secret_names" {
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description = "Secret names that will be injected as env variables"
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type = list(string)
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}

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