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fastDFS客户端连接不上服务器

问题：

com.github.tobato.fastdfs.exception.FdfsConnectException: 无法获取服务端连接资源：can't create connection to/192.168.25.129:22122	at com.github.tobato.fastdfs.conn.DefaultConnection.
   
    (DefaultConnection.java:52)	at com.github.tobato.fastdfs.conn.PooledConnectionFactory.create(PooledConnectionFactory.java:48)	at com.github.tobato.fastdfs.conn.PooledConnectionFactory.create(PooledConnectionFactory.java:24)	at org.apache.commons.pool2.BaseKeyedPooledObjectFactory.makeObject(BaseKeyedPooledObjectFactory.java:60)	at org.apache.commons.pool2.impl.GenericKeyedObjectPool.create(GenericKeyedObjectPool.java:1041)	at org.apache.commons.pool2.impl.GenericKeyedObjectPool.borrowObject(GenericKeyedObjectPool.java:342)	at org.apache.commons.pool2.impl.GenericKeyedObjectPool.borrowObject(GenericKeyedObjectPool.java:265)	at com.github.tobato.fastdfs.conn.ConnectionManager.getConnection(ConnectionManager.java:103)	at com.github.tobato.fastdfs.conn.TrackerConnectionManager.executeFdfsTrackerCmd(TrackerConnectionManager.java:63)	at com.github.tobato.fastdfs.service.DefaultTrackerClient.getStoreStorage(DefaultTrackerClient.java:39)	at com.github.tobato.fastdfs.service.DefaultFastFileStorageClient.uploadFile(DefaultFastFileStorageClient.java:53)	at com.leyou.upload.test.FdfsTest.testUpload(FdfsTest.java:31)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)	at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)	at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)	at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)	at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)	at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)Caused by: java.net.SocketTimeoutException: connect timed out	at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)	at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)	at java.net.Socket.connect(Socket.java:589)	at com.github.tobato.fastdfs.conn.DefaultConnection.
    
     (DefaultConnection.java:50)	... 41 more
    
   

原因：

虚拟机的防火墙没有关闭。

解决：

在linux中输入以下命令关闭防火墙（该命令为Centos6.5版本命令）：service iptables stop

开启： chkconfig iptables on

关闭： chkconfig iptables off

2.即时生效，重启后复原

开启： service iptables start

关闭： service iptables stop

3.查询TCP连接情况：

netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'

4.查询端口占用情况：

netstat   -anp   |   grep  portno（例如：netstat –apn | grep 80）

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