AWS - Can't detaching network interfaces - You are not allowed to manage 'ela-attach' attachments
I did the AWS mysfits tutorial and I thought the cleanup would be as simple as deleting the Cloud Formation stack. However, items failed to delete so I am trying to clean them up manually to assist the Cloud Formation stack deletion.
I keep getting an error when trying to Detach the network interfaces (I am logged into the root account):
Error detaching network interfaces:
eni-0047gfhfgh8ab0e: You are not allowed to manage 'ela-attach' attachments. eni-0f4a46hgfha757e: You are not allowed to manage 'ela-attach' attachments.
I am unable to delete my VPC without these being deleted.
The stack as a whole is failing to delete because of the following: The following resource(s) failed to delete: [InternetGateway, PublicSubnetTwo, VPC, GatewayAttachement, PublicSubnetOne].
Answer
I had the same issue, which gave me the following message:
This could be because there is a service in use which still uses the network interface. You could try some of the following things:
- Remove unused VPC links from API gateway
- Remove unused VPC Endpoint services
- Remove unused NAT gateways
- Remove unused ECS/EKS clusters
- Remove unused load balancers
- Remove unused EFS mounts
If that doesn't help, there is something wrong/stuck on the underlying OS, you should wait for it to resolve by itself or report it. I had an ENI deployed by a Lambda function after deleting the lambda function, the ENI got stuck. After some time I was able to detach the ENI.