https://community.cloudera.com/t5/Support-Questions/ResourceManager-Web-UI-is-unreachable-alert-eventhough-we/m-p/215335#M177245 <P>Recently ran into same issue where we were getting alerts for all the UIs. The root cause ended up being the times on the nodes were not correct. After fixing the time and restarting ambari server/agents and all services, the alerts went away</P> Tue, 13 Mar 2018 06:02:06 GMT abajwa 2018-03-13T06:02:06Z