Had ECS task with EBS volume stuck in deprovisioning. Was able to "kill" the ECS task, but EBS volume & ENI won't shut down

Question

I have volume Id: vol-052db481725ad28e3 and ENI (eni-01c1baa5dc154e20c) in us-east-1. It was originally attached to an ECS task. When attempting to spin down the ECS task, it was stuck in deprovisioning (believe it was originally stuck due to the cluster deleting before the ECS task). I managed to "unstick" the task deprovisioning by creating an ECS cluster with the same name.

Now the Volume and ENI are stuck & unable to be deleted. The Volume and ENI are both active and associated to the original ECS task, but the ECS task is gone / deleted. It's been at least 12 hrs, and I've been unable to find a way to delete these resources.

```
$ aws ec2 describe-volumes --volume-ids vol-052db481725ad28e3
{
    "Volumes": [
        {
            "Attachments": [
                {
                    "AttachTime": "2024-06-29T14:09:33+00:00",
                    "State": "attached",
                    "VolumeId": "vol-052db481725ad28e3",
                    "DeleteOnTermination": false,
                    "AssociatedResource": "arn:aws:ecs:us-east-1:211125504797:task/ent-dev-cluster/ff75465816a142c1a61bdcd90c618fe1",
                    "InstanceOwningService": "fargate.amazonaws.com"
                }
            ],
            "AvailabilityZone": "us-east-1a",
            "CreateTime": "2024-06-29T14:09:26.102000+00:00",
            "Encrypted": false,
            "Size": 1,
            "SnapshotId": "",
            "State": "in-use",
            "VolumeId": "vol-052db481725ad28e3",
            "Iops": 3000,
            "Tags": [
                {
                    "Key": "AmazonECSCreated",
                    "Value": "arn:aws:ecs:us-east-1:211125504797:task/ent-dev-cluster/ff75465816a142c1a61bdcd90c618fe1"
                },
                {
                    "Key": "AmazonECSManaged",
                    "Value": "true"
                }
            ],
            "VolumeType": "gp3",
            "MultiAttachEnabled": false,
            "Throughput": 125
        }
    ]
}
```

```
$ aws ecs describe-tasks --tasks ff75465816a142c1a61bdcd90c618fe1

An error occurred (ClusterNotFoundException) when calling the DescribeTasks operation: Cluster not found.
```

Adeleke Adebowale .J. · Answer

To resolve the issue of deleting the stuck Volume and ENI in AWS, you can try the following steps:

Detach the Volume:
Use the AWS CLI to detach the volume from the non-existent ECS task

```
aws ec2 detach-volume --volume-id vol-052db481725ad28e3
```

Delete the ENI:
Since the ENI is likely still attached to the ECS task, you can try to detach it first and then delete it.

```
aws ec2 detach-network-interface --attachment-id eni-attach-id
aws ec2 delete-network-interface --network-interface-id eni-01c1baa5dc154e20c
```

If the attachment ID is not known, you can describe the network interface to get it:

```
aws ec2 describe-network-interfaces --network-interface-ids eni-01c1baa5dc154e20c

```

Force Delete the Volume:
If the volume is still marked as in-use, you might need to force delete it after detaching it.

```
aws ec2 delete-volume --volume-id vol-052db481725ad28e3
```

Check and Clean Up Resources:
Ensure there are no lingering dependencies or attachments to the Volume or ENI.

Verify Resource Deletion:
After performing the above steps, confirm that the Volume and ENI are no longer present.

```
aws ec2 describe-volumes --volume-ids vol-052db481725ad28e3
aws ec2 describe-network-interfaces --network-interface-ids eni-01c1baa5dc154e20c

```

If the resources are still stuck, consider reaching out to AWS Support for assistance in cleaning up the stuck resources.

Had ECS task with EBS volume stuck in deprovisioning. Was able to "kill" the ECS task, but EBS volume & ENI won't shut down

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