issue in deleting VPC and network interface

Question

I am trying to delete aws vpc (a non default one). I am getting error that \"We could not delete the following VPC (vpc-xxxxxxx (xx.xx.xx.x/16)) Network interface \'eni-xxxx

Answer 1

You were right..It was ECS issue in my case. Not letting me delete my ENIs saying I dont have the permissions. I had already deregistered my ECS task definition but still It was not letting me delete resources like VPC, ENIs created by ECS.

I had to update the version of task definition under ECS using same resources as previous definition version and then I deleted that new service and then deleted the clustere.

With clustere, it deleted all resource like VPC, ENIs which it was not letting me delete earlier.

I then dergistered second version of task definition. I had two inactive tasks definitions for a monent and then one task definitions disappeared..now only one is there in inactive state.