Hadoop默认端口表及用途

| 端口 用途 |
| 9000 | fs.defaultFS，如：hdfs://172.25.40.171:9000 |
| 9001 | dfs.namenode.rpc-address，DataNode会连接这个端口 |
| 50070 | dfs.namenode.http-address |
| 50470 | dfs.namenode.https-address |
| 50100 | dfs.namenode.backup.address |
| 50105 | dfs.namenode.backup.http-address |
| 50090 | dfs.namenode.secondary.http-address，如：172.25.39.166:50090 |
| 50091 | dfs.namenode.secondary.https-address，如：172.25.39.166:50091 |
| 50020 | dfs.datanode.ipc.address |
| 50075 | dfs.datanode.http.address |
| 50475 | dfs.datanode.https.address |
| 50010 | dfs.datanode.address，DataNode的数据传输端口 |
| 8480 | dfs.journalnode.rpc-address |
| 8481 | dfs.journalnode.https-address |
| 8032 | yarn.resourcemanager.address |
| 8088 | yarn.resourcemanager.webapp.address，YARN的http端口 |
| 8090 | yarn.resourcemanager.webapp.https.address |
| 8030 | yarn.resourcemanager.scheduler.address |
| 8031 | yarn.resourcemanager.resource-tracker.address |
| 8033 | yarn.resourcemanager.admin.address |
| 8042 | yarn.nodemanager.webapp.address |
| 8040 | yarn.nodemanager.localizer.address |
| 8188 | yarn.timeline-service.webapp.address |
| 10020 | mapreduce.jobhistory.address |
| 19888 | mapreduce.jobhistory.webapp.address |
| 2888 | ZooKeeper，如果是Leader，用来监听Follower的连接 |
| 3888 | ZooKeeper，用于Leader选举 |
| 2181 | ZooKeeper，用来监听客户端的连接 |
| 60010 | hbase.master.info.port，HMaster的http端口 |
| 60000 | hbase.master.port，HMaster的RPC端口 |
| 60030 | hbase.regionserver.info.port，HRegionServer的http端口 |
| 60020 | hbase.regionserver.port，HRegionServer的RPC端口 |
| 8080 | hbase.rest.port，HBase REST server的端口 |
| 10000 | hive.server2.thrift.port |
| 9083 | hive.metastore.uris |

其中最常用的应该是50070和8088了
http://ip:50070/
WEB界面中监控任务执行状况：
http://ip:8088/