hadoophdfsclouderawebhdfs

Can not connect to WebHDFS by port 14000 in Cloudera Manager

I have a Cloudera (the version is cdh6.2.0) cluster and every components(HDFS, HIVE etc.) worked well. However, recently I want to connect to WebHDFS, I found the port(14000) was not running at all, by executing command netstat -antpl|grep 14000 on the NameNode.

I have confirmed the WebHDFS was enabled in Cloudera Manager and it was used 14000 port by default.

enter image description here

Besides, I also tried 50070 port, it didn't listen either. I also tried curl:

curl -i "http://localhost:14000/webhdfs/v1/user/user.name=cloudera&op=GETFILESTATUS"
curl: (7) Failed to connect to localhost port 14000: Connection refused

I appreciate for any help. Thanks.

Solution

  • I solved it by using 9870 port instead.

    I found the version of my Hadoop is 3.0, and it is listening with 9870 but not the 50070 for dfs.namenode.http-address. enter image description here

    As for 14000, it is may used for HTTPS REST. enter image description here

    Reference: https://community.cloudera.com/t5/Support-Questions/Cannot-connect-to-webhdfs/td-p/34830