This curl command shown registered hosts. thx! I try to below command, it works. curl -i -H "X-Requested-By: ambari"-u admin:admin -X DELETE http://localhost:8080/api/v1/hosts/hotname ... View more

You could remove via delete statement in psql.. 1) Removing table entries in hoststate : Delete from hoststate where host_id=xx 2) Removing table entries from hosts : Delete from hosts where host_id=xx And restart ambari-server thx. It works. ... View more

I was found this hosts ambari.hosts and ambari.hoststate on postgre database. This host's health_status is UNKNOWN. I want to remove this hosts clearly. ... View more

"hdfs dfsadmin -report" command is not shown registered but don't added hosts. refreshNamenodes datanodehost:port For the given datanode, reloads the configuration files, stops serving the removed block-pools and starts serving new block-pools. refreshNodes Re-read the hosts and exclude files to update the set of Datanodes that are allowed to connect to the Namenode and those that should be decommissioned or recommissioned. I think refreshNamenodes command is not correct in my problem, so i try to refreshNodes command, but it doesn't works. Ambari-server still write heartbeat lost log. ... View more

I don't add on Ambari web ui. So, I can't see anywhere. But, ambari-server still check heartbeat. When i try to add host, on Confirm hosts tab, i can see this hosts on 'Other Registered Hosts' menu. This menu say that, "These are the hosts that have registered with the server, but do not appear in the list of hosts that you are adding." ... View more