Terraform erroring waiting for ECS cluster - terraform

Question

I am using terraform to create an ECS cluster in AWS.
resource "aws_ecs_cluster" "cluster" {
name = "api-cluster"
capacity_providers = ["FARGATE"]
default_capacity_provider_strategy {
capacity_provider = "FARGATE"
weight = "100"
}
}
Whenever I run this code it starts fine, but then errors waiting for the cluster to be created.
Terraform v1.0.0
on linux_amd64
Initializing plugins and modules...
aws_ecs_cluster.cluster: Creating...
aws_ecs_cluster.cluster: Still creating... [10s elapsed]
╷
│ Error: error waiting for ECS Cluster (arn:aws:ecs:xxxxxxxxxxx:cluster/api-cluster) to become Available: couldn't find resource
│
│ with aws_ecs_cluster.cluster,
│ on main.tf line 73, in resource "aws_ecs_cluster" "cluster":
│ 73: resource "aws_ecs_cluster" "cluster" {
│
╵
The ECS cluster is ultimately deployed, but the script errors. What am I doing wrong?

Answer 1

It turns out this is caused by needing the ecs:DescribeClusters Action to be allowed on the user executing terraform apply.
Thanks to #ydaetskocR for pointing me in the right direction.

Answer 2

In my case, I had:
resource "aws_ecs_cluster" "cluster" {
name = "${var.service}-${var.env}"
}
module "ecs_service" {
source = "app.terraform.io/ifit/ecs-service/aws"
version = "2.3.0"
cluster_name = aws_ecs_cluster.cluster.name
...other stuff...
}
It was trying to create both the ecs cluster and the ecs service at the same time, but the service depends on the cluster for the cluster_name. I needed to add a depends_on attribute to the ecs_service:
module "ecs_service" {
source = "app.terraform.io/ifit/ecs-service/aws"
version = "2.3.0"
cluster_name = aws_ecs_cluster.cluster.name
...other stuff...
depends_on = [
aws_ecs_cluster.cluster
]
}