Problem description

When building HDP cluster and configuring namenode ha, an error is reported: start additional namenode

The cluster can be used normally, that is, the active namenode cannot be found when HA is configured

Solution

Two possible reasons

sudo su hdfs -l -c 'hdfs namenode -boostrapStandby'

This command is to be installed on another namenode

When setting the name in get started, the name entered conflicts with the host name