Terraform AWS ECS Fargate

Terraform module to create AWS ECS FARGATE services. Module supports both FARGATE and FARGATE-SPOT capacity provider settings.

Terraform versions

Terraform 0.13. Pin module version to ~> v6.0. Submit pull-requests to master branch.

Usage

ECS Fargate Service

resource "aws_ecs_cluster" "cluster" {
  name = "example-ecs-cluster"

  setting {
    name  = "containerInsights"
    value = "disabled"
  }
}

resource "aws_ecs_cluster_capacity_providers" "cluster" {
  cluster_name = aws_ecs_cluster.cluster.name

  capacity_providers = ["FARGATE_SPOT", "FARGATE"]

  default_capacity_provider_strategy {
    capacity_provider = "FARGATE_SPOT"
  }
}

module "ecs-fargate" {
  source = "umotif-public/ecs-fargate/aws"
  version = "~> 6.1.0"

  name_prefix        = "ecs-fargate-example"
  vpc_id             = "vpc-abasdasd132"
  private_subnet_ids = ["subnet-abasdasd132123", "subnet-abasdasd132123132"]

  cluster_id         = aws_ecs_cluster.cluster.id

  task_container_image   = "marcincuber/2048-game:latest"
  task_definition_cpu    = 256
  task_definition_memory = 512

  task_container_port             = 80
  task_container_assign_public_ip = true

  target_groups = [
    {
      target_group_name = "tg-fargate-example"
      container_port    = 80
    }
  ]

  health_check = {
    port = "traffic-port"
    path = "/"
  }

  tags = {
    Environment = "test"
    Project = "Test"
  }
}

Examples

• ECS Fargate
• ECS Fargate Spot
• ECS Fargate with EFS
• ECS Service with multiple target groups

Authors

Module managed by Marcin Cuber LinkedIn.

Requirements

Name	Version
terraform	>= 0.13.7
aws	>= 3.34

Providers

Name	Version
aws	>= 3.34

Modules

No modules.

Resources

Name	Type
aws_cloudwatch_log_group.main	resource
aws_ecs_service.service	resource
aws_ecs_task_definition.task	resource
aws_iam_role.execution	resource
aws_iam_role.task	resource
aws_iam_role_policy.ecs_exec_inline_policy	resource
aws_iam_role_policy.log_agent	resource
aws_iam_role_policy.read_repository_credentials	resource
aws_iam_role_policy.task_execution	resource
aws_lb_target_group.task	resource
aws_security_group.ecs_service	resource
aws_security_group_rule.egress_service	resource
aws_ecs_task_definition.task	data source
aws_iam_policy_document.read_repository_credentials	data source
aws_iam_policy_document.task_assume	data source
aws_iam_policy_document.task_ecs_exec_policy	data source
aws_iam_policy_document.task_execution_permissions	data source
aws_iam_policy_document.task_permissions	data source
aws_kms_key.secretsmanager_key	data source
aws_region.current	data source

Inputs

Name	Description	Type	Default	Required
capacity_provider_strategy	(Optional) The capacity_provider_strategy configuration block. This is a list of maps, where each map should contain "capacity_provider ", "weight" and "base"	list(any)	[]	no
cluster_id	The Amazon Resource Name (ARN) that identifies the cluster.	string	n/a	yes
container_name	Optional name for the container to be used instead of name_prefix.	string	""	no
create_repository_credentials_iam_policy	Set to true if you are specifying repository_credentials variable, it will attach IAM policy with necessary permissions to task role.	bool	false	no
deployment_controller_type	Type of deployment controller. Valid values: CODE_DEPLOY, ECS, EXTERNAL. Default: ECS.	string	"ECS"	no
deployment_maximum_percent	The upper limit of the number of running tasks that can be running in a service during a deployment	number	200	no
deployment_minimum_healthy_percent	The lower limit of the number of running tasks that must remain running and healthy in a service during a deployment	number	50	no
desired_count	The number of instances of the task definitions to place and keep running.	number	1	no
enable_execute_command	Specifies whether to enable Amazon ECS Exec for the tasks within the service.	bool	true	no
force_new_deployment	Enable to force a new task deployment of the service. This can be used to update tasks to use a newer Docker image with same image/tag combination (e.g. myimage:latest), roll Fargate tasks onto a newer platform version.	bool	false	no
health_check	A health block containing health check settings for the target group. Overrides the defaults.	map(string)	n/a	yes
health_check_grace_period_seconds	Seconds to ignore failing load balancer health checks on newly instantiated tasks to prevent premature shutdown, up to 7200. Only valid for services configured to use load balancers.	number	300	no
load_balanced	Whether the task should be loadbalanced.	bool	true	no
log_retention_in_days	Number of days the logs will be retained in CloudWatch.	number	30	no
logs_kms_key	The KMS key ARN to use to encrypt container logs.	string	""	no
name_prefix	A prefix used for naming resources.	string	n/a	yes
placement_constraints	(Optional) A set of placement constraints rules that are taken into consideration during task placement. Maximum number of placement_constraints is 10. This is a list of maps, where each map should contain "type" and "expression"	list(any)	[]	no
platform_version	The platform version on which to run your service. Only applicable for launch_type set to FARGATE.	string	"LATEST"	no
private_subnet_ids	A list of private subnets inside the VPC	list(string)	n/a	yes
propogate_tags	Specifies whether to propagate the tags from the task definition or the service to the tasks. The valid values are SERVICE and TASK_DEFINITION.	string	"TASK_DEFINITION"	no
proxy_configuration	(Optional) The proxy configuration details for the App Mesh proxy. This is a list of maps, where each map should contain "container_name", "properties" and "type"	list(any)	[]	no
repository_credentials	name or ARN of a secrets manager secret (arn:aws:secretsmanager:region:aws_account_id:secret:secret_name)	string	""	no
repository_credentials_kms_key	key id, key ARN, alias name or alias ARN of the key that encrypted the repository credentials	string	"alias/aws/secretsmanager"	no
service_registry_arn	ARN of aws_service_discovery_service resource	string	""	no
sg_name_prefix	A prefix used for Security group name.	string	""	no
tags	A map of tags (key-value pairs) passed to resources.	map(string)	{}	no
target_groups	The name of the target groups to associate with ecs service	any	[]	no
task_container_assign_public_ip	Assigned public IP to the container.	bool	false	no
task_container_command	The command that is passed to the container.	list(string)	[]	no
task_container_cpu	Amount of CPU to reserve for the container.	number	null	no
task_container_environment	The environment variables to pass to a container.	map(string)	{}	no
task_container_image	The image used to start a container.	string	n/a	yes
task_container_memory	The hard limit (in MiB) of memory for the container.	number	null	no
task_container_memory_reservation	The soft limit (in MiB) of memory to reserve for the container.	number	null	no
task_container_port	The port number on the container that is bound to the user-specified or automatically assigned host port	number	n/a	yes
task_container_protocol	Protocol that the container exposes.	string	"HTTP"	no
task_container_secrets	The secrets variables to pass to a container.	list(map(string))	null	no
task_container_working_directory	The working directory to run commands inside the container.	string	""	no
task_definition_cpu	Amount of CPU to reserve for the task.	number	256	no
task_definition_ephemeral_storage	The total amount, in GiB, of ephemeral storage to set for the task.	number	0	no
task_definition_memory	The soft limit (in MiB) of memory to reserve for the task.	number	512	no
task_health_check	An optional healthcheck definition for the task	map(number)	null	no
task_health_command	A string array representing the command that the container runs to determine if it is healthy.	list(string)	null	no
task_host_port	The port number on the container instance to reserve for your container.	number	0	no
task_mount_points	The mount points for data volumes in your container. Each object inside the list requires "sourceVolume", "containerPath" and "readOnly". For more information see https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task_definition_parameters.html	list(object({ sourceVolume = string, containerPath = string, readOnly = bool }))	null	no
task_pseudo_terminal	Allocate TTY in the container	bool	null	no
task_start_timeout	Time duration (in seconds) to wait before giving up on resolving dependencies for a container. If this parameter is not specified, the default value of 3 minutes is used (fargate).	number	null	no
task_stop_timeout	Time duration (in seconds) to wait before the container is forcefully killed if it doesn't exit normally on its own. The max stop timeout value is 120 seconds and if the parameter is not specified, the default value of 30 seconds is used.	number	null	no
volume	(Optional) A set of volume blocks that containers in your task may use. This is a list of maps, where each map should contain "name", "host_path", "docker_volume_configuration" and "efs_volume_configuration". Full set of options can be found at https://www.terraform.io/docs/providers/aws/r/ecs_task_definition.html	list	[]	no
vpc_id	The VPC ID.	string	n/a	yes
wait_for_steady_state	If true, Terraform will wait for the service to reach a steady state (like aws ecs wait services-stable) before continuing.	bool	false	no

Outputs

Name	Description
execution_role_arn	The Amazon Resource Name (ARN) specifying the ECS execution role.
execution_role_name	The name of the ECS execution role.
log_group_name	The name of the Cloudwatch log group for the task.
service_arn	The Amazon Resource Name (ARN) that identifies the ECS service.
service_name	The name of the service.
service_sg_id	The Amazon Resource Name (ARN) that identifies the service security group.
target_group_arn	The ARN of the Target Group used by Load Balancer.
target_group_name	The Name of the Target Group used by Load Balancer.
task_definition_arn	The Amazon Resource Name (ARN) of the task definition created
task_definition_name	The name of the task definition created
task_role_arn	The Amazon Resource Name (ARN) specifying the ECS service role.
task_role_name	The name of the Fargate task service role.

License

See LICENSE for full details.

Pre-commit hooks

Install dependencies

• pre-commit
• terraform-docs required for terraform_docs hooks.
• TFLint required for terraform_tflint hook.

MacOS

brew install pre-commit terraform-docs tflint

brew tap git-chglog/git-chglog
brew install git-chglog