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HDFS Service Ports

The following table lists the default ports used by the various HDFS services. (Note: Neither of these services are used in a standard HDP installation.)

Table 2.4. HDFS Service Ports
Service Servers Default Ports Used Protocol Description Need End User Access? Configuration Parameters

NameNode WebUI

Master Nodes (NameNode and any back-up NameNodes) 50070 http Web UI to look at current status of HDFS, explore file system Yes (Typically admins, Dev/Support teams, as well as extra-cluster users who require webhdfs/hftp access, for example, to use distcp) dfs.http.address
50470 https Secure http service dfs.https.address

NameNode metadata service

8020/ 9000 IPC

File system metadata operations

Yes (All clients who directly need to interact with the HDFS) Embedded in URI specified by fs.defaultFS

DataNode

All Slave Nodes

50075

http

DataNode WebUI to access the status, logs, etc, and file data operations when using webhdfs or hftp

Yes (Typically admins, Dev/Support teams, as well as extra-cluster users who require webhdfs/hftp access, for example, to use distcp) dfs.datanode.http.address

50475

https

Secure http service

dfs.datanode.https.address

50010

http

Data transfer

dfs.datanode.address

1019

https

Secure data transfer

dfs.datanode.address

50020

IPC

Metadata operations

No dfs.datanode.ipc.address
Secondary NameNode Secondary NameNode and any backup Secondanry NameNode

50090

http

Checkpoint for NameNode metadata

No dfs.secondary.http.address