我正在使用R1Soft（5.8.1）在几台服务器上进行文件备份，今晚已经尝试设置一个MySQL备份 – 我安装了驱动程序等，并设置了策略，但出现错误。
Failed to perform discovery on database instance '123' Database instance discovery error Error setting up proxy connection Error could not connect to mysql instance 我的用户名等是正确的，所以我authentication正常（我知道这是因为我得到了一个不同的错误，以前有关主机名，我不得不纠正使用“使用备用主机名/ IP”）。
我做了一个错误的search，但没有得到任何有用的消息 – 我在http://wiki.r1soft.com/display/kb3/Known+Issues+affecting+upgrades+to+Server+Backup+ Manager + 5.6.x +（post + release） ，这是相同的消息，但它与升级有关，而且修复方法是确保代理和服务器运行相同的版本，并且在这种情况下。
日志文件显示：
2014-11-26 21:52:17,533 INFO - AGENT(MYSQL_IP): Agent Version 5.8.1.38 2014-11-26 21:52:17,535 INFO - AGENT(MYSQL_IP): Connection authenticated; Waiting for command. 2014-11-26 21:52:17,576 INFO - AGENT(MYSQL_IP): Executing get device list request... 2014-11-26 21:52:17,576 INFO - AGENT(MYSQL_IP): Discovering devices available for replication ... 2014-11-26 21:52:17,972 INFO - TASK(NONE): Starting proxy to agent(MYSQL_IP) -> R1SOFT_IP:3306 on port 4306 2014-11-26 21:52:52,144 INFO - TASK(NONE): Shutting down proxy server on port 4306 2014-11-26 21:52:52,146 INFO - TASK(NONE): Proxy server on port 4306 stopped. 2014-11-26 21:52:52,972 ERROR - Failed to perform discovery on database instance '123' com.r1soft.backup.server.facade.DatabaseException: Failed to perform discovery on database instance '123' at com.r1soft.backup.server.facade.DatabaseFacade.discoverDatabaseInstance(DatabaseFacade.java:58) at com.r1soft.backup.server.web.policy.AddDatabaseInstanceWindow.onValidateDataDirWillBeBackedUp(AddDatabaseInstanceWindow.java:865) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2726) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2654) at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) at org.zkoss.zk.ui.impl.EventProcessingThreadImpl.process0(EventProcessingThreadImpl.java:534) at org.zkoss.zk.ui.impl.EventProcessingThreadImpl.run(EventProcessingThreadImpl.java:461) Caused by: com.r1soft.backup.server.worker.WorkerException: Database instance discovery error at com.r1soft.backup.server.worker.db.mysql.MySQLInstanceDiscoveryWorker.run(MySQLInstanceDiscoveryWorker.java:121) at com.r1soft.backup.server.facade.DatabaseFacade.discoverDatabaseInstance(DatabaseFacade.java:51) ... 10 more Caused by: com.r1soft.backup.server.worker.WorkerException: Error setting up proxy connection at com.r1soft.backup.server.worker.AgentProxyWorker$AgentSocketProxyServer.acceptNewConnection(AgentProxyWorker.java:340) at com.r1soft.backup.server.worker.AgentProxyWorker$AgentSocketProxyServer.run(AgentProxyWorker.java:405) at java.lang.Thread.run(Unknown Source) Caused by: com.r1soft.backup.server.worker.WorkerException: Error could not connect to mysql instance at com.r1soft.backup.server.worker.AgentProxyWorker$AgentSocketProxyServer.getNewAutenticatedAgentSocket(AgentProxyWorker.java:305) at com.r1soft.backup.server.worker.AgentProxyWorker$AgentSocketProxyServer.access$1100(AgentProxyWorker.java:123) at com.r1soft.backup.server.worker.AgentProxyWorker$AgentSocketProxyServer$AgentPipe.<init>(AgentProxyWorker.java:469) at com.r1soft.backup.server.worker.AgentProxyWorker$AgentSocketProxyServer.acceptNewConnection(AgentProxyWorker.java:338) ... 2 more 2014-11-26 21:56:59,892 ERROR - GlobalUpdater failed to update properly java.lang.NullPointerException at com.r1soft.backup.server.web.GlobalUpdater$GlobalUpdaterThread.updateCharts(GlobalUpdater.java:1002) at com.r1soft.backup.server.web.GlobalUpdater$GlobalUpdaterThread.doUpdates(GlobalUpdater.java:755) at com.r1soft.backup.server.web.GlobalUpdater$GlobalUpdaterThread.run(GlobalUpdater.java:639) 2014-11-26 21:57:04,891 ERROR - GlobalUpdater failed to update properly java.lang.NullPointerException at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2654) at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) at org.zkoss.zk.ui.impl.EventProcessingThreadImpl.process0(EventProcessingThreadImpl.java:534) at org.zkoss.zk.ui.impl.EventProcessingThreadImpl.run(EventProcessingThreadImpl.java:461) Caused by: com.r1soft.backup.server.worker.WorkerException: Database instance discovery error at com.r1soft.backup.server.worker.db.mysql.MySQLInstanceDiscoveryWorker.run(MySQLInstanceDiscoveryWorker.java:121) at com.r1soft.backup.server.facade.DatabaseFacade.discoverDatabaseInstance(DatabaseFacade.java:51) ... 10 more Caused by: com.r1soft.backup.server.worker.WorkerException: Error setting up proxy connection at com.r1soft.backup.server.worker.AgentProxyWorker$AgentSocketProxyServer.acceptNewConnection(AgentProxyWorker.java:340) at com.r1soft.backup.server.worker.AgentProxyWorker$AgentSocketProxyServer.run(AgentProxyWorker.java:405) at java.lang.Thread.run(Unknown Source) Caused by: com.r1soft.backup.server.worker.WorkerException: Error could not connect to mysql instance at com.r1soft.backup.server.worker.AgentProxyWorker$AgentSocketProxyServer.getNewAutenticatedAgentSocket(AgentProxyWorker.java:305) at com.r1soft.backup.server.worker.AgentProxyWorker$AgentSocketProxyServer.access$1100(AgentProxyWorker.java:123) at com.r1soft.backup.server.worker.AgentProxyWorker$AgentSocketProxyServer$AgentPipe.<init>(AgentProxyWorker.java:469) at com.r1soft.backup.server.worker.AgentProxyWorker$AgentSocketProxyServer.acceptNewConnection(AgentProxyWorker.java:338) ... 2 more
任何人有任何想法可能是什么问题？