How to move the HDFS namenode to a new host

apache hadoop hdfs

So I finally managed to get it moved.

Set the running HDFS into safemode:bin/hadoop dfsadmin -safemode enter
TarBall the complete directory under dfs.name.dir
Move the TarBall to the new namenode and extract the contents.
change the core-site.xml and the master to the hostname of the new node
start and leave the safemode:bin/hadoop dfsadmin -safemode leave