@Nitin0858 Was the ambari-server setup-kerberos run? Can you check the auth_to_local rule and mapping.  ... View more

@Nitin0858 below command will work if you enable kerberos for ambari curl --negotiate -u: 'http://<hostname>:8080/api/v1/clusters/<cluster_name>/services/<service_name>;' eg: curl --negotiate -u: 'http://ambari-host:8080/api/v1/clusters/clusterabc/services/HIVE' Please find the steps below: 1) ambari-server setup-kerberos 2) ambari-server restart 3) Verify kerberos properties are updated in ambari.properties | grep kerberos 4) kinit with ambari admin principal and run the curl call.   ... View more