There my be some questions about dubbo register to zk like https://stackoverflow.com/questions/56153450/why-dubbo-provider-always-register-to-a-wrong-address/56180362#56180362
and
apache/dubbo#4055.
To fix this problem, you need to edit your nameserver in /etc/hosts to your nameserver.
For example, I am running the code on my Ubuntu machine and zk run on it, too.
Just edit it like
127.0.0.1 localhost
127.0.1.1 arjenzhou-GE62p.s. arjenzhou-GE62 is my hostname