ECS task not starting - STOPPED (CannotPullContainerError: “Error response from daemon request canceled while waiting for connection”

Question

I'm starting a task in ECS using Fargate and after being in PENDING for a little bit it ends up in STOPPED with the following error:

STOPPED (CannotPullContainerError: "Error response from daem

When I expand out the details I see

STOPPED (CannotPullContainerError: "Error response from daemon: Get https://id.dkr.ecr.ap-southeast-2.amazonaws.com/v2/: net/http: request canceled while waiting for connection"

with the reason

(Client.Timeout exceeded while awaiting headers)

So the task can't access the container for some reason, but I'm not sure what permission is missing and from what resource. I've read around a bit and the only real suggestion I've found is to add AssignPublicIp: ENABLED to the AwsvpcConfiguration but that didn't help.

Answer 1

I managed to fix this error by enabling the public IP for every Fargate instance created with my service on ECS.

Service configuration:

{
  ...
  "networkConfiguration": {
    "awsvpcConfiguration": {
      "subnets": [
        "my-subnets",
      ],
      "securityGroups": [
        "my-security-group"
      ],
      "assignPublicIp": "ENABLED" // <-- ENABLED HERE
    }
  },
}