hdfs namenode -bootstrapStandby + nodename not start from CLI

[#1]

when we start the namenode in ambari cluster we get the following errors

inspite the resolving of the hosts/ips are ok

what else chould be

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:  http://wiki.apache.org/ha doop/ConnectionRefused

[#2 · Accepted solution]

Is passwordless installed between the namenode and secondary namenode ( or standby if you are HA )
can you check in the namenode UI the checkpoints ?