hadoop各个模块的默认port：
| Application | Port | Describe |
|---|---|---|
| zookeeper | 2181 | zookeeper client port |
| 3888 | server port to connect to leader | |
| kafka | 9092 | |
| hadoop-ResourceManager | 8088 | yarn.resourcemanager.webapp.address |
| 8030 | yarn.resourcemanager.scheduler.address | |
| 8031 | yarn.resourcemanager.resource-tracker.address | |
| 8032 | yarn.resourcemanager.address | |
| 8033 | yarn.resourcemanager.admin.address | |
| hadoop-Nodemanager | 8040 | yarn.nodemanager.localizer.address |
| 8042 | yarn.nodemanager.webapp.address | |
| hadoop-DataNode | 50010 | dfs.datanode.address |
| 50020 | dfs.datanode.ipc.address | |
| hadoop-NameNode | 8020 | dfs.namenode.rpc-address |
| 50070 | dfs.namenode.http-address | |
| hadoop-ha | 8485 | dfs.namenode.shared.edits.dir |
| 8480 | dfs.journalnode.http-address | |
| 8019 | dfs.ha.zkfc.port(for DFSZKFailoverController) | |
| spark | 7077 | master |
| 8080 | web |