Terraform resource: aws ecs task definition

aws_ecs_task_definition

• https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecs_task_definition

• network_mode (optional) none, bridge, awsvpc, and host

https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecs_task_definition#network_mode

• requires_compatibilities: EC2, Fargate. https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecs_task_definition#requires_compatibilities

Attributes

family (required) is a name for your task definition
container_definitions:  name, image, cpu, memory, essential, portMappings
environment
secrets
dependsOn
portMappings 
task_role_arn
revision https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecs_task_definition#revision
volume
cpu
cpu_architecture
memory
execution_role_arn

Examples

resource "aws_ecs_task_definition" "myservice" {
 family = "myservice"
 container_definitions = jsonencode([
   {
     name      = "first"
     image     = "service-first"
     cpu       = 10
     memory    = 512
     essential = true
     portMappings = [
       {
         containerPort = 80
         hostPort      = 80
       }
     ]
   },
   {
     name      = "second"
     image     = "service-second"
     cpu       = 10
     memory    = 256
     essential = true
     portMappings = [
       {
         containerPort = 443
         hostPort      = 443
       }
     ]
   }
 ])

 volume {
   name      = "service-storage"
   host_path = "/ecs/service-storage"
 }

 placement_constraints {
   type       = "memberOf"
   expression = "attribute:ecs.availability-zone in [us-west-2a, us-west-2b]"
 }
}

Official example

resource "aws_ecs_service" "mongo" {
 name            = "mongodb"
 cluster         = aws_ecs_cluster.foo.id
 task_definition = aws_ecs_task_definition.mongo.arn
 desired_count   = 3
 iam_role        = aws_iam_role.foo.arn
 depends_on      = [aws_iam_role_policy.foo]

 ordered_placement_strategy {
   type  = "binpack"
   field = "cpu"
 }

 load_balancer {
   target_group_arn = aws_lb_target_group.foo.arn
   container_name   = "mongo"
   container_port   = 8080
 }

 placement_constraints {
   type       = "memberOf"
   expression = "attribute:ecs.availability-zone in [us-west-2a, us-west-2b]"
 }
}

Errors

• ECS Task Definition container definitions is invalid
• Error: ClientException: Invalid Compatibilities
• Essential container in task exited

Related

• aws_secretsmanager_secret_version
• aws ecs register-task-definition
• aws ecs run-task

See also

• Terraform resource: aws_ecs_task_definition: container_definitions, family, revision, cpu, cpu_architecture, memory, MemoryReservation, volume, execution_role_arn, requires_compatibilities, dependsOn
• Terraform ECS: module, resources: aws_ecs_cluster, aws_ecs_service: task definition, aws_ecs_task_definition: container_definitions