DUBBO是一个分布式服务框架，致力于提供高性能和透明化的RPC远程服务调用方案，是阿里巴巴SOA服务化治理方案的核心框架，每天为2,000+个服务提供3,000,000,000+次访问量支持，并被广泛应用于阿里巴巴集团的各成员站点。
dubbo获取的ip错误后，程序报如下异常：
2016-06-03 19:25:56,268 WARN [com.alibaba.dubbo.remoting.transport.AbstractClient] - [DUBBO] client reconnect to 10.174.246.27:20885 find error . url: dubbo://10.174.246.27:20885/com.soft.portal.service.api.IPortal?anyhost=true&application=ecs-sale-service&check=false&codec=dubbo&dubbo=2.5.4-SNAPSHOT&generic=false&heartbeat=60000&interface=com.soft.portal.service.api.IPortal&loadbalance=roundrobin&methods=ruleengine,cover,initDownload,underwriting&pid=3724&revision=1.0.1-SNAPSHOT&side=consumer&timeout=100000×tamp=1464953149151, dubbo version: 2.5.3, current host: 192.168.0.119 com.alibaba.dubbo.remoting.RemotingException: client(url: dubbo://10.174.246.27:20885/com.soft.portal.service.api.IPortal?anyhost=true&application=ecs-sale-service&check=false&codec=dubbo&dubbo=2.5.4-SNAPSHOT&generic=false&heartbeat=60000&interface=com.soft.portal.service.api.IPortal&loadbalance=roundrobin&methods=ruleengine,cover,initDownload,underwriting&pid=3724&revision=1.0.1-SNAPSHOT&side=consumer&timeout=100000×tamp=1464953149151) failed to connect to server /10.174.246.27:20885 client-side timeout 3000ms (elapsed: 3002ms) from netty client 192.168.0.119 using dubbo version 2.5.3 at com.alibaba.dubbo.remoting.transport.netty.NettyClient.doConnect(NettyClient.java:127) at com.alibaba.dubbo.remoting.transport.AbstractClient.connect(AbstractClient.java:280) at com.alibaba.dubbo.remoting.transport.AbstractClient$1.run(AbstractClient.java:145) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439) at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662) ccc2016-06-03 19:40:52,395 ERROR [com.alibaba.dubbo.remoting.transport.AbstractClient] - [DUBBO] client reconnect to 10.174.246.27:20885 find error . url: dubbo://10.174.246.27:20885/com.soft.portal.service.api.IPortal?anyhost=true&application=ecs-sale-service&check=false&codec=dubbo&dubbo=2.5.4-SNAPSHOT&generic=false&heartbeat=60000&interface=com.soft.portal.service.api.IPortal&loadbalance=roundrobin&methods=ruleengine,cover,initDownload,underwriting&pid=3724&revision=1.0.1-SNAPSHOT&side=consumer&timeout=100000×tamp=1464953149151, dubbo version: 2.5.3, current host: 192.168.0.119 com.alibaba.dubbo.remoting.RemotingException: client(url: dubbo://10.174.246.27:20885/com.soft.portal.service.api.IPortal?anyhost=true&application=ecs-sale-service&check=false&codec=dubbo&dubbo=2.5.4-SNAPSHOT&generic=false&heartbeat=60000&interface=com.soft.portal.service.api.IPortal&loadbalance=roundrobin&methods=ruleengine,cover,initDownload,underwriting&pid=3724&revision=1.0.1-SNAPSHOT&side=consumer&timeout=100000×tamp=1464953149151) failed to connect to server /10.174.246.27:20885 client-side timeout 3000ms (elapsed: 3003ms) from netty client 192.168.0.119 using dubbo version 2.5.3 at com.alibaba.dubbo.remoting.transport.netty.NettyClient.doConnect(NettyClient.java:127) at com.alibaba.dubbo.remoting.transport.AbstractClient.connect(AbstractClient.java:280) at com.alibaba.dubbo.remoting.transport.AbstractClient$1.run(AbstractClient.java:145) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439) at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662)
在 dubbo.properties 配置文件中增加 dubbo.protocol.host=192.168.0.123，问题即可解决。
