Multi Zone Example

Background

Sometimes it is necessary to deploy Dubbo services into different zones for the sake of disaster tolerance or high availability. In order to consumer the services among the different registry centers, you may need to consider configuring your consumer like this:

# registry config
registries:
  "shanghaiZk":
    protocol: "zookeeper"
    timeout: "3s"
    address: "127.0.0.1:2182"
    username: ""
    password: ""
    zone: shanghai
    weight: 50

  "hangzhouZk":
    protocol: "zookeeper"
    timeout: "3s"
    address: "127.0.0.1:2183"
    zone: hangzhou
    weight: 200

# reference config
references:
  "UserProvider":
    registry: "shanghaiZk,hangzhouZk"
    protocol: "dubbo"
    interface: "org.apache.dubbo.UserProvider"
    cluster: "failover"
    methods:
      - name: "GetUser"
        retries: 3

Run Steps

1. Start Zookeeper in docker environment.

   make -f ../build/Makefile docker-up
   

2. Start Server

   Start Hangzhou zone server.

   cd go-server-hz
   make -f ../../build/Makefile clean start  
   

   Start Shanghai zone server.

   cd go-server-sh
   make -f ../../build/Makefile clean start  
   
   

3. Run Consumer

   cd go-client
   make -f ../../build/Makefile run
   

4. Cleanup

   cd go-server-hz && \
        make -f ../../build/Makefile clean && \
        cd ..
   cd go-server-sh && \
        make -f ../../build/Makefile clean && \
        cd ..
   cd go-client && \
        make -f ../../build/Makefile clean && \
        cd ..
   make -f ../build/Makefile docker-down