ViPR SRM |Watch4net：附加后端正在侦听，但充满了流关闭错误

各种报告缺少指标和属性。负载平衡器和仲裁器无法将数据推送到附加后端，即使后端显示为已启动也是如此。对附加后端的进一步调查在日志中显示以下错误：

WARNING -- [2017-01-10 15:16:15 EST] -- AbstractCollector::flushNext(): Error flushing Connector-Backend3
com.watch4net.apg.v2.collector.PipeError: Can't write to backend2.host.local:2300
   at com.watch4net.apg.v2.collector.plugins.SocketConnector.sendBuffer(SocketConnector.java:441)
   at com.watch4net.apg.v2.collector.plugins.SocketConnector.commit(SocketConnector.java:409)
   at com.watch4net.apg.v2.collector.plugins.SocketConnector.flushData(SocketConnector.java:452)
   at com.watch4net.apg.v2.collector.plugins.loadbalancer.decision.chain.AbstractEndPointElement.flushData(AbstractEndPointElement.java:63)
   at com.watch4net.apg.v2.collector.AbstractCollector.flushNext(AbstractCollector.java:85)
   at com.watch4net.apg.v2.collector.plugins.FailOverFilter.access$1400(FailOverFilter.java:53)
   at com.watch4net.apg.v2.collector.plugins.FailOverFilter$CheckNextComponentAvailabilityTimerTask.run(FailOverFilter.java:906) 
   at java.util.TimerThread.mainLoop(Timer.java:555)
   at java.util.TimerThread.run(Timer.java:505)
Caused by: java.net.ConnectException: Connection refused
   at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
   at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
   at com.watch4net.apg.v2.collector.plugins.SocketConnector.connect(SocketConnector.java:562)
   at com.watch4net.apg.v2.collector.plugins.SocketConnector.ensureConnected(SocketConnector.java:595)
   at com.watch4net.apg.v2.collector.plugins.SocketConnector.sendBuffer(SocketConnector.java:424)

附加后端当前未侦听，并且充斥着以下错误：

WARNING -- [2017-01-03 10:31:28 EST] -- StorageGroup::handleRawData(): Unable to write raw value variable 'x.x.x.x.x.x.x.x.x'! java.io.IOException: Stream Closed

重新启动附加后端主机可使服务正常运行。但是，在此特定情况下，客户并不知道 ABE 已达到 100% 的文件容量。因此，某些操作不再运行。必须清理主机或必须添加更多空间。

故障处理步骤包括以下：

运行“netstat -anp |grep 2...“，以验证后端套接字是否正在侦听端口 2100、2200、2300 和 2400：

Host3:~ # netstat -anp | grep -i :2...
tcp 0 0 0.0.0.0:2100 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:2101 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:22   0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:2200 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:2201 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:2300 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:2301 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:2400 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:2401 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:2050 0.0.0.0:* LISTEN