HDFS service ports

Note the default ports used by various HDFS services.

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 1. 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