https://community.cloudera.com/t5/Archives-of-Support-Questions/hdfs-namenode-bootstrapStandby-nodename-not-start-from-CLI/m-p/216595#M72273 <P>Is passwordless installed between the namenode and secondary namenode ( or standby if you are HA ) <BR />can you check in the namenode UI the checkpoints ?</P> Fri, 08 Dec 2017 02:32:07 GMT ahallam 2017-12-08T02:32:07Z https://community.cloudera.com/t5/Archives-of-Support-Questions/hdfs-namenode-bootstrapStandby-nodename-not-start-from-CLI/m-p/216594#M72272 <P>when we start the namenode in ambari cluster we get the following errors</P><P>inspite the resolving of the hosts/ips are ok</P><P>what else chould be </P><PRE>hdfs namenode -bootstrapStandby -force 17/12/05 07:23:15 FATAL ha.BootstrapStandby: Unable to fetch namespace information from active NN at master01.sys784.com/110.14.28.153:8020: Call From master03.sys784.co m/110.14.27.162 to master01.sys784.com:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: <A href="http://wiki.apache.org/ha" target="_blank">http://wiki.apache.org/ha</A> doop/ConnectionRefused</PRE> Tue, 05 Dec 2017 15:35:42 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/hdfs-namenode-bootstrapStandby-nodename-not-start-from-CLI/m-p/216594#M72272 mike_bronson7 2017-12-05T15:35:42Z https://community.cloudera.com/t5/Archives-of-Support-Questions/hdfs-namenode-bootstrapStandby-nodename-not-start-from-CLI/m-p/216595#M72273 <P>Is passwordless installed between the namenode and secondary namenode ( or standby if you are HA ) <BR />can you check in the namenode UI the checkpoints ?</P> Fri, 08 Dec 2017 02:32:07 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/hdfs-namenode-bootstrapStandby-nodename-not-start-from-CLI/m-p/216595#M72273 ahallam 2017-12-08T02:32:07Z