its ambari 1.6 ,reset is post ambari2.1 I checked few things: I see below rows in ambari-postgres DB ambari=# select host_name from ambari.hosts; host_name --------------------- mxspdh16.amdocs.com mxspdh10.amdocs.com mxspdh18.amdocs.com mxspdh17.amdocs.com mxspdh10.mx.amdocs.com (5 rows) ambari=# select * from ambari.hoststate ; agent_version | available_mem | current_state | health_status | host_name | time_in_state | maintenance_state ---------------------+---------------+---------------+----------------------------------------------+---------------------+---------------+------------------ - {"version":"1.7.0"} | 31623084 | INIT | {"healthStatus":"HEALTHY","healthReport":""} | mxspdh10.mx.amdocs.com | 1463041598424 | {"version":"1.7.0"} | 31792512 | INIT | {"healthStatus":"UNKNOWN","healthReport":""} | mxspdh10.amdocs.com | 1462368178266 | {"4":"OFF"} {"version":"1.7.0"} | 28241364 | INIT | {"healthStatus":"HEALTHY","healthReport":""} | mxspdh16.amdocs.com | 1463040523426 | {"version":"1.7.0"} | 28890788 | INIT | {"healthStatus":"HEALTHY","healthReport":""} | mxspdh18.amdocs.com | 1463040527465 | {"version":"1.7.0"} | 29281736 | INIT | {"healthStatus":"HEALTHY","healthReport":""} | mxspdh17.amdocs.com | 1463040528044 | (5 rows) ambari=# delete from ambari.hoststate where host_name='mxspdh10.mx.amdocs.com'; DELETE 1 I delete both rows. But on restart ambari these two rows again gets populated. Please see why we are getting mxspdh10.mx.amdocs.com ??? ... View more

Seems IT changed domain name, updated /etc/host and resolv.conf to reflect old fqdn name.But restart cluster was failing with Failed on local exception: java.io.IOException: java.lang.IllegalArgumentException: Server has invalid Kerberos principal: nn/mxspdh10.amdocs.com@MXSPDH10.KERBEROS.COM; Host Details : local host is: "mxspdh10.mx.amdocs.com/135.208.66.57"; destination host is: "mxspdh10.amdocs.com":8020; Local host is .mx.amdocs.com and expected was amdocs.com. After resolv.conf chnage ,tried rebooting cluster ,but post that facing ambari-agent heartbeat issues.Same error as shared in the forum.Suggession pls. ... View more

Any luck..Am facing same issue..!! ... View more

Hi Harshal,Were you able to fix this?Am facing same issue. ... View more