datanode端口占用错误
来源：3-8 HDFS伪分布式环境搭建
Chuansssss
2017-12-29
老师，我在使用./start-dfs.sh启动伪分布式hdfs的时候，namendoe和secondarynamenode都可以正常启动，但是本机的datanode不能正常启动。我查看了datanode的启动日志，显示端口被占用。
2017-12-29 19:44:47,991 INFO org.apache.hadoop.http.HttpServer2: HttpServer.start() threw a non Bind IOException
java.net.BindException: Port in use: localhost:0
at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:951)
at org.apache.hadoop.http.HttpServer2.start(HttpServer2.java:887)
at org.apache.hadoop.hdfs.server.datanode.web.DatanodeHttpServer.<init>(DatanodeHttpServer.java:105)
at org.apache.hadoop.hdfs.server.datanode.DataNode.startInfoServer(DataNode.java:785)
at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:1138)
at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:451)
at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2406)
at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2293)
at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2340)
at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2517)
at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2541)
Caused by: java.net.BindException: Cannot assign requested address
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:444)
at sun.nio.ch.Net.bind(Net.java:436)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:214)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.mortbay.jetty.nio.SelectChannelConnector.open(SelectChannelConnector.java:216)
at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:946)
... 10 more
2017-12-29 19:44:47,994 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Shutdown complete.
2017-12-29 19:44:47,994 FATAL org.apache.hadoop.hdfs.server.datanode.DataNode: Exception in secureMain
java.net.BindException: Port in use: localhost:0
at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:951)
at org.apache.hadoop.http.HttpServer2.start(HttpServer2.java:887)
at org.apache.hadoop.hdfs.server.datanode.web.DatanodeHttpServer.<init>(DatanodeHttpServer.java:105)
at org.apache.hadoop.hdfs.server.datanode.DataNode.startInfoServer(DataNode.java:785)
at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:1138)
at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:451)
at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2406)
at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2293)
at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2340)
at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2517)
at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2541)
Caused by: java.net.BindException: Cannot assign requested address
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:444)
at sun.nio.ch.Net.bind(Net.java:436)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:214)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.mortbay.jetty.nio.SelectChannelConnector.open(SelectChannelConnector.java:216)
at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:946)
... 10 more
2017-12-29 19:44:47,995 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1
2017-12-29 19:44:47,997 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
所用环境是老师所提供的虚拟机，因为不能识别hadoop000这个主机名，我把slaves文件中的localhost换成了虚拟机的ip。
请问老师有什么解决的方法。
1回答
-
Michael_PK
2017-12-29
你把hadoop000映射到你自己的IP
042017-12-30
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