kimmking opened a new issue #2043: [Proposal]support hostname or domain in service discovery. URL: https://github.com/apache/incubator-dubbo/issues/2043 Hello, community, It's a nice way to support hostname or domain in service discovery, then we can gain more flexibility both developers and users. ## Problems in Dubbo, providers register their IP addresses to Registry Server like ZK/Redis etc. It will be difficult for these case: - case A: When a provider deployed in a vm container such as Docker, consumers in other computer can't access the IPs in container. - case B: Across LANs(Local Area Network)，consumer can't touch another IP in different LAN. ## Target solve problems to support case A & B ## Solution In case A and B, usually we map a proxy port from a remote IP or Container IP to a local IP out of network box.Then if dubbo support hostname or domain in service discovery directly, then we can modify /etc/hosts to redirect consumer's requests to the proxy port to invoke Service. ## Example - Configure Provider Configure protocol with a new attribute host： ``` <dubbo:protocol name="dubbo" port="28080" host="www.example.com" /> ``` Then providers will register dubbo://www.example.com:28080/com.test.HelloService to registry servers. We also can config the host param in Service Config or Registry Config. - Configure Consumer Nothing need to configure except opening /etc/hosts and adding one line: www.example.com 10.1.1.3 # assume 10.1.1.3 is the mapping proxy IP for real Provider IP
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