Hadoop ResourceManager HA Connecting to ResourceManager at /0.0.0.0:8032
If you enable HA-RM in automatic fail-over mode, you cannot trigger active to stand-by or vice-verse. and you should provide yarn.client.failover-proxy-provider parameter, the class to be used by Clients to fail-over to the Active RM. And as well as configure yarn.resourcemanager.hostname to identify the RM's (i.e, rm1 , rm2).
If automatic fail-over is not enables, you can trigger using below yarn rmadmin -transitionToStandby rm1
Please do above changes and give reply with result