由於端口被修改導致的DataNode 重啓失敗

 

  在配置kerberos認證失敗後,打算恢復原始的狀態,

     DataNode 重啓失敗, 經過排查發現錯誤日誌如下,判斷有可能是端口拒絕訪問導致的,查看hdfs的 端口配置發現有兩處變動的地方,使用恢復按鈕進行恢復,之後重啓即可.(此處是CM默認的配置,和HDFS原始的端口號不完全一致)

Exception in secureMain
java.net.SocketException: Call From hzd-t-vbdl-02 to null:0 failed on socket exception: java.net.SocketException: Permission denied; For more details see:  http://wiki.apache.org/hadoop/SocketException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:824)
	at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:797)
	at org.apache.hadoop.ipc.Server.bind(Server.java:562)
	at org.apache.hadoop.ipc.Server.bind(Server.java:534)
	at org.apache.hadoop.hdfs.net.TcpPeerServer.<init>(TcpPeerServer.java:52)
	at org.apache.hadoop.hdfs.server.datanode.DataNode.initDataXceiver(DataNode.java:1138)
	at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:1414)
	at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:500)
	at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2804)
	at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2707)
	at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2754)
	at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2898)
	at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2922)
Caused by: java.net.SocketException: Permission denied
	at sun.nio.ch.Net.bind0(Native Method)
	at sun.nio.ch.Net.bind(Net.java:433)
	at sun.nio.ch.Net.bind(Net.java:425)
	at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
	at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
	at org.apache.hadoop.ipc.Server.bind(Server.java:545)
	... 10 more