dubbo-admin Failed to invoke remote method: getMetricsByGroup

截图

使用dubbo-admin时，前端页面统计功能一直无法展示信息。

版本信息

• dubbo：2.7.3
• Spring Boot：2.1.6.RELEASE
• dubbo-spring-boot-starter：2.7.1
• dubbo-admin：develop分支

错误信息

dubbo-admin前端提示Not found exported service: org.apache.dubbo.monitor.MetricsService

System Error, please try again later! Message:Failed to invoke remote method: getMetricsByGroup, provider: dubbo://192.168.2.153:20880/org.apache.dubbo.monitor.MetricsService?application=dubbo-admin&cache=true&dubbo=2.0.2&interface=org.apache.dubbo.monitor.MetricsService&lazy=false&methods=getMetricsByGroup&pid=8560&register.ip=192.168.2.153&remote.application=&revision=2.7.2&scope=remote&side=consumer&sticky=false&timestamp=1564035344103, cause: org.apache.dubbo.remoting.RemotingException: org.apache.dubbo.remoting.RemotingException: Not found exported service: org.apache.dubbo.monitor.MetricsService:20880 in [dubbo/learn.dubbo.service.DemoService:1.0.0:20880], may be version or group mismatch , channel: consumer: /192.168.2.153:55418 --> provider: /192.168.2.153:20880, message:RpcInvocation [methodName=getMetricsByGroup, parameterTypes=[class java.lang.String], arguments=[dubbo], attachments={path=org.apache.dubbo.monitor.MetricsService, input=225, dubbo=2.0.2, interface=org.apache.dubbo.monitor.MetricsService, version=0.0.0}]
org.apache.dubbo.remoting.RemotingException: Not found exported service: org.apache.dubbo.monitor.MetricsService:20880 in [dubbo/learn.dubbo.service.DemoService:1.0.0:20880], may be version or group mismatch , channel: consumer: /192.168.2.153:55418 --> provider: /192.168.2.153:20880, message:RpcInvocation [methodName=getMetricsByGroup, parameterTypes=[class java.lang.String], arguments=[dubbo], attachments={path=org.apache.dubbo.monitor.MetricsService, input=225, dubbo=2.0.2, interface=org.apache.dubbo.monitor.MetricsService, version=0.0.0}]
    at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol.getInvoker(DubboProtocol.java:266)
    at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:127)
    at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:102)
    at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:193)
    at org.apache.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:51)
    at org.apache.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:57)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

解决方案

• 是否开启consumer消费者，如不开启也一直提示该错误（博主因为没有开启，浪费好多时间找原因）。

• 是否添加dubbo-monitor-default依赖

  <dependency>
    <groupId>org.apache.dubbo</groupId>
    <artifactId>dubbo-monitor-default</artifactId>
    <version>${dubbo.version}</version>
  </dependency>

• Spring Boot工程是否开启@EnableDubboConfig注解

  @EnableDubboConfig
  //或者
  @EnableDubboConfigBinding(prefix = "dubbo.metrics", type = MetricsConfig.class)

• 是否添加metrics和provider.filter配置

  dubbo:
  metrics:
    protocol: dubbo
    port: 20880
  provider:
    filter: metrics

参考

apache/dubbo-samples-metrics

apache/dubbo#4505