https://community.cloudera.com/t5/Support-Questions/two-name-nodes-are-stand-by-after-configuring-HA/m-p/312332#M225098 <P>Hi All,<BR /><BR />I had similar issue, while building new cluster and enabling HA. Both NN were is standby and error in NN log {1}.<BR /><BR />Fix was in CM, we need to "Initialize HA state in ZK" under "Federation and High Availability. There then restart cluster.<BR /><BR />{1}Caused by: java.net.ConnectException: Call From &lt;NN1&gt; to &lt;NN2&gt;:8022 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: <A href="http://wiki.apache.org/hadoop/ConnectionRefused" target="_blank">http://wiki.apache.org/hadoop/ConnectionRefused</A></P> Tue, 02 Mar 2021 16:32:22 GMT kolli_sandeep 2021-03-02T16:32:22Z