According to this doc, vSphere 5.5 Documentation Center I should be able to change the http tomcat port. But, after I do, I see the errors below. I am guessing there are some other conf files to change, but I can't find which ones. I need to change the port to something other than my default to support another products agent I need on the vcenter server.
unable to retrieve health data from https://localhost:443/vsm/health.xml
unable to retrieve health data from https://localhost:443/eam/eamService-web/health.xml