Look at /etc/hosts and see if there are two different host names using the same IP address or duplicate entries for the host name.
Hi  I have just deployed ESRS VE and everything appears to be working all managed device are connected and EMC can connect to managed devices.  I notice however that i have a "System is not Healthy" and the Core Service ershttpdlistener status is red.  Is there a way of kicking this service to make it go green ?
ESRS Virtual Edition : Core Service ershttpdlistener status red