HDP-188.8.131.52 kerberized cluster managed by Ambari 184.108.40.206. I get the following error every 5-10 seconds in ambari-server.log on Ambari server:
15 Nov 2018 16:55:48,834 INFO [ambari-metrics-retrieval-service-thread-3008] URLStreamProvider:222 - Received WWW-Authentication header:Negotiate, for URL:http://srv-amb-01.local.net:8744/api/v1/cluster/summary
15 Nov 2018 16:55:48,838 WARN [ambari-metrics-retrieval-service-thread-3008] RequestTargetAuthentication:88 - NEGOTIATE authentication error: No valid credentials provided (Mechanism level: No valid credentials provided (Mechanism level: Attempt to obtain new INITIATE credentials failed! (null)))
15 Nov 2018 16:55:48,838 ERROR [ambari-metrics-retrieval-service-thread-3008] AppCookieManager:122 - SPNego authentication failed, can not get hadoop.auth cookie for URL: http://srv-amb-01.local.net:8744/api/v1/cluster/summary
Clearly it has to with kerberos, but I cannot figure out which component it complains about.