Incorrect configuration: namenode address dfs.namenode.rpc-address is not configured

Question

I am getting this error when I try and boot up a DataNode. From what I have read, the RPC paramters are only used for a HA configuration, which I am not setting up (I think)

Answer 1

creating dfs.name.dir and dfs.data.dir directories and configuring full hostname in core-site.xml, masters & slaves is solved my issue