question Re: move namenode to a new server in Archives of Support Questions (Read Only)

move namenode to a new server

fresher — Tue, 21 Apr 2026 13:59:24 GMT

Hei,

I need help.
I have already installed Clouera including two hosts, one works as namenode and datanode at the same time, the other one just as datanode. The cloudera has all services installed like Hdfs, hue, hbase, and so on. Now I have a new server, and I want to move the namenode to the new server, is it ok for me to do that, if yes how can I do that?
Attachment is my coudera information and two hosts information, please check and help me.
Thanks in advance.

Br,
Yibin

Re: move namenode to a new server

Jim Halfpenny — Wed, 07 Jan 2015 08:01:50 GMT

If you only wish to avoid running both the NameNode and DataNode services on one host it might be easier to migrate the DataNode role. Add the new server and assign the DataNode role to it and then decomission the DataNode on the first server to avoid any data loss.

If you do wish to move the NameNode there are instructions on how to do so in the Cloudera documentation.

http://www.cloudera.com/content/cloudera/en/documentation/cloudera-manager/v5-0-0/Cloudera-Manager-Managing-Clusters/cm5mc_move_nn.html

Re: move namenode to a new server

fresher — Wed, 07 Jan 2015 12:26:12 GMT

Hei Jim,

Thank you so much, I wil follow this to d omy job. 🙂

Yibin