When the thresholds are breached of performance in Portal console it's trigger the events on Portal console. But that events are not showing in the OneClick console.
The following errors were found in the Tomcat log file ($SPECROOT/tomcat/logs/catalina.out or stdout.log file):
Jun DD, AAAA HH:MM:SS.970 (PoolThread-42060: GlobalPool => NPCEventManagerWebserviceURLPoller) (NetqosEventLog) - (DEBUG) - Evaluating Event Manager web service location
Jun DD, AAAA HH:MM:SS PM (PoolThread-42060: GlobalPool => NPCEventManagerWebserviceURLPoller) (org.apache.axis2.transport.http.HTTPSender) - (INFO) - Unable to send to url[http://<Portal_host>:8481/dm/inventory]
java.net.UnknownHostException: <Portal_host>
Release : Any version
DNS resolution