localhost:50030/jobtracker.jsp
localhost:50060/tasktracker.jsp
localhost:50070/dfshealth.jsp
1. NameNode进程
NameNode节点进程 – 运行在端口9000上
INFO org.apache.hadoop.hdfs.server.namenode.NameNode: Namenode up at: asn-ThinkPad-SL410/127.0.1.1:9000
对应的Jetty服务器 -- 运行在端口50070上， 50070是NameNode Web的管理端口
INFO org.apache.hadoop.http.HttpServer: Port returned by webServer.getConnectors()[0].getLocalPort() before open() is -1. Opening the listener on 50070
INFO org.apache.hadoop.http.HttpServer: listener.getLocalPort() returned 50070 webServer.getConnectors()[0].getLocalPort() returned 50070
INFO org.apache.hadoop.http.HttpServer: Jetty bound to port 50070
INFO org.mortbay.log: jetty-6.1.26
INFO org.mortbay.log: Started SelectChannelConnector@0.0.0.0:50070
2. DataNode进程
DataNode控制进程 -- 运行在50010上
INFO org.apache.hadoop.hdfs.StateChange: BLOCK* NameSystem.registerDatanode: node registration from 127.0.0.1:50010 storage DS-1647545997-127.0.1.1-50010-1399439341888
INFO org.apache.hadoop.net.NetworkTopology: Adding a new node: /default-rack/127.0.0.1:50010 -- 网络拓扑结构，向默认机架中增加了1个数据节点
INFO org.apache.hadoop.hdfs.StateChange: *BLOCK* NameSystem.processReport: from 127.0.0.1:50010, blocks: 0, processing time: 2 msecs
DatanodeRegistration(asn-ThinkPad-SL410:50010, storageID=DS-1647545997-127.0.1.1-50010-1399439341888, infoPort=50075, ipcPort=50020)
................. DatanodeRegistration(127.0.0.1:50010, storageID=DS-1647545997-127.0.1.1-50010-1399439341888, infoPort=50075, ipcPort=50020) In DataNode.run, data = FSDataset{dirpath=‘/opt/hadoop/data/current‘}
DataNode 对应的Jetty服务器 – 运行在端口50075上， DataNode Web 的管理端口
INFO org.apache.hadoop.http.HttpServer: Port returned by webServer.getConnectors()[0].getLocalPort() before open() is -1. Opening the listener on 50075
INFO org.apache.hadoop.http.HttpServer: listener.getLocalPort() returned 50075 webServer.getConnectors()[0].getLocalPort() returned 50075
INFO org.apache.hadoop.http.HttpServer: Jetty bound to port 50075
INFO org.mortbay.log: jetty-6.1.26
INFO org.mortbay.log: Started SelectChannelConnector@0.0.0.0:50075
DataNode 的 RPC -- 运行在50020端口
INFO org.apache.hadoop.ipc.Server: IPC Server Responder: starting
INFO org.apache.hadoop.ipc.Server: IPC Server handler 0 on 50020: starting
INFO org.apache.hadoop.ipc.Server: IPC Server handler 1 on 50020: starting
INFO org.apache.hadoop.ipc.Server: IPC Server listener on 50020: starting
INFO org.apache.hadoop.hdfs.server.datanode.DataNode: using BLOCKREPORT_INTERVAL of 3600000msec Initial delay: 0msec
INFO org.apache.hadoop.ipc.Server: IPC Server handler 2 on 50020: starting
3. TaskTracker进程
TaskTracker服务进程 -- 运行在58567端口上
2014-05-09 08:51:54,128 INFO org.apache.hadoop.mapred.TaskTracker: TaskTracker up at: localhost/127.0.0.1:58567
2014-05-09 08:51:54,128 INFO org.apache.hadoop.mapred.TaskTracker: Starting tracker tracker_asn-ThinkPad-SL410:localhost/127.0.0.1:58567
2014-05-09 08:51:54,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 3 on 58567: starting
2014-05-09 08:52:24,443 INFO org.apache.hadoop.mapred.TaskTracker: Starting thread: Map-events fetcher for all reduce tasks on tracker_asn-ThinkPad-SL410:localhost/127.0.0.1:58567
TaskTracker服务对应的Jetty服务器 -- 运行在50060端口上
2014-05-09 08:52:24,513 INFO org.apache.hadoop.http.HttpServer: Port returned by webServer.getConnectors()[0].getLocalPort() before open() is -1. Opening the listener on 50060
2014-05-09 08:52:24,514 INFO org.apache.hadoop.http.HttpServer: listener.getLocalPort() returned 50060 webServer.getConnectors()[0].getLocalPort() returned 50060
2014-05-09 08:52:24,514 INFO org.apache.hadoop.http.HttpServer: Jetty bound to port 50060
2014-05-09 08:52:24,514 INFO org.mortbay.log: jetty-6.1.26
2014-05-09 08:52:25,088 INFO org.mortbay.log: Started SelectChannelConnector@0.0.0.0:50060
4. JobTracker 进程
一个Job由多个Task组成
JobTracker up at: 9001
JobTracker webserver: 50030
2014-05-09 12:20:05,598 INFO org.apache.hadoop.mapred.JobTracker: Starting jobtracker with owner as asn
2014-05-09 12:20:05,664 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source RpcDetailedActivityForPort9001 registered.
2014-05-09 12:20:05,665 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source RpcActivityForPort9001 registered.
2014-05-09 12:20:06,166 INFO org.apache.hadoop.http.HttpServer: Port returned by webServer.getConnectors()[0].getLocalPort() before open() is -1. Opening the listener on 50030
2014-05-09 12:20:06,169 INFO org.apache.hadoop.http.HttpServer: listener.getLocalPort() returned 50030 webServer.getConnectors()[0].getLocalPort() returned 50030
2014-05-09 12:20:06,169 INFO org.apache.hadoop.http.HttpServer: Jetty bound to port 50030
2014-05-09 12:20:06,169 INFO org.mortbay.log: jetty-6.1.26
2014-05-09 12:20:07,481 INFO org.mortbay.log: Started SelectChannelConnector@0.0.0.0:50030
2014-05-09 12:20:07,513 INFO org.apache.hadoop.mapred.JobTracker: JobTracker up at: 9001
2014-05-09 12:20:07,513 INFO org.apache.hadoop.mapred.JobTracker: JobTracker webserver: 50030
2014-05-09 12:20:08,165 INFO org.apache.hadoop.mapred.JobTracker: Cleaning up the system directory
2014-05-09 12:20:08,479 INFO org.apache.hadoop.mapred.JobTracker: History server being initialized in embedded mode
2014-05-09 12:20:08,487 INFO org.apache.hadoop.mapred.JobHistoryServer: Started job history server at: localhost:50030
2014-05-09 12:20:08,487 INFO org.apache.hadoop.mapred.JobTracker: Job History Server web address: localhost:50030
2014-05-09 12:20:08,513 INFO org.apache.hadoop.mapred.CompletedJobStatusStore: Completed job store is inactive
2014-05-09 12:20:08,931 INFO org.apache.hadoop.mapred.JobTracker: Refreshing hosts information
注：关闭nanenode安全模式
命令为：
[hadoop@localhost hadoop-0.20.203.0]$ bin/hadoop dfsadmin -safemode leave
原文地址：http://www.cnblogs.com/asnjudy/p/3788112.html
