there is a unhealthy service on consul:
first. I check nomad alloc by
nomad alloc status 9dac4939-8f0f-eb2c-c368-929ffd46cfeb, and alloc exists. so I stop it.
but service still exist in consul. so manually deregister it by
consul services deregister -id=_nomad-task-9dac4939-8f0f-eb2c-c368-929ffd46cfeb-server-server-http
after that it still appears again and again, even there is no allocation with id
what happened and how to remove this service.