wuxiaobo000111 opened a new issue #2839: 11800 port refuse URL: https://github.com/apache/skywalking/issues/2839 exception message ```java ERROR 2019-06-08 16:04:32:570 SkywalkingAgent-4-ServiceAndEndpointRegisterClient-0 ServiceAndEndpointRegisterClient : ServiceAndEndpointRegisterClient execute fail. org.apache.skywalking.apm.dependencies.io.grpc.StatusRuntimeException: UNAVAILABLE: io exception at org.apache.skywalking.apm.dependencies.io.grpc.stub.ClientCalls.toStatusRuntimeException(ClientCalls.java:222) at org.apache.skywalking.apm.dependencies.io.grpc.stub.ClientCalls.getUnchecked(ClientCalls.java:203) at org.apache.skywalking.apm.dependencies.io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:132) at org.apache.skywalking.apm.network.register.v2.RegisterGrpc$RegisterBlockingStub.doServiceRegister(RegisterGrpc.java:386) at org.apache.skywalking.apm.agent.core.remote.ServiceAndEndpointRegisterClient.run(ServiceAndEndpointRegisterClient.java:115) at org.apache.skywalking.apm.util.RunnableWithExceptionProtection.run(RunnableWithExceptionProtection.java:36) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.skywalking.apm.dependencies.io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: no further information: /192.168.31.65:11800 at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717) at org.apache.skywalking.apm.dependencies.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:325) at org.apache.skywalking.apm.dependencies.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340) at org.apache.skywalking.apm.dependencies.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:634) at org.apache.skywalking.apm.dependencies.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:581) at org.apache.skywalking.apm.dependencies.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:498) at org.apache.skywalking.apm.dependencies.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:460) at org.apache.skywalking.apm.dependencies.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) at org.apache.skywalking.apm.dependencies.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ... 1 more Caused by: java.net.ConnectException: Connection refused: no further information ... 11 more ```
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