现在问题是，我启动project和user模块已经是注册到到etcd中了，同时启动也没问题。 
I have no name!@ac1493bbe3b6:/opt/bitnami/etcd$ etcdctl get --prefix ""
/project/1.0.1/127.0.0.1:8882
{"name":"project","addr":"127.0.0.1:8882","version":"1.0.1","weight":2}
/user/1.0.1/127.0.0.1:8881
{"name":"user","addr":"127.0.0.1:8881","version":"1.0.1","weight":2}

但是我在api模块中用grpc调用user时，就提示报错 
{
"code": 12,
"msg": "unknown service login.service...