https://community.cloudera.com/t5/Support-Questions/Active-Namenode-is-Down-in-Hadoop/m-p/231713#M193557 <P><EM><A href="https://community.cloudera.com/@CrazyMinion"> @CrazyMinion</A><BR /></EM></P><P><EM>Can you setup the passwordless connection between Ambari-server and the other hosts in the cluster?</EM></P><P><EM>To add on disable the firewall,ensure NTP is working after doing all these steps ,restart the cluster and then revert with the new error s if any </EM></P><P><EM>HTH</EM></P> Tue, 28 Aug 2018 19:23:49 GMT Shelton 2018-08-28T19:23:49Z