Question 277172 in Amazon Web Sevices Question posted in
The official Amazon Web Services documentation can be found here.

Amazon web services – Attach existing VPC while creating an ECS cluster

When I create an ECS cluster on the AWS UI, I have the option to select a VPC. But how do I select or attach an existing VPC while creating a cluster using Terraform?

resource "aws_ecs_cluster" "gtm" {
  name = "gtm"
  setting {
    name  = "containerInsights"
    value = "enabled"
  }
}
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2

Answers


  1. 0

    The VPC is not set at the cluster level, it is set at the ECS service level, by specifying the VPC subnets you want the service to use.

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  2. 0

    As @Mark mentioned, it is ECS service level. network_configuration.subnets helps to attach subnet. In the Terraform registry page (in Mark’s link), there is no explicit sample for network configuration, so I added it below.

    Sample Code:

    resource "aws_ecs_service" "ecs_service" {
 name            = "my-ecs-service"
 cluster         = aws_ecs_cluster.gtm.id
 task_definition = aws_ecs_task_definition.ecs_task_definition.arn

 network_configuration {
   subnets         = [aws_subnet.subnet.id]
   security_groups = [aws_security_group.security_group.id]
 }
 ...
}
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