IBM BPM Advanced 8.5.7 - "Unable to establish a connection to the server" seen when attempting to access Health Management

I saw this: -

within the BPM Advanced 8.5.7 Process Admin console.

What was interesting was that nothing obvious was popping up within the WAS logs ( for the Node Agent, SupCluster, AppCluster etc. ).

This was the URL that I was using to access Process Admin: -

https://bpm857.uk.ibm.com:8443/ProcessAdmin/ProcessAdmin/com.lombardisoftware.processadmin.ProcessAdmin/ProcessAdmin.jsp

I'm not sure what made me think this, but I then realised that the hostname - bpm857.uk.ibm.com - was actually an alias to the real hostname - bpm857.novalocal - as the server is running on an openStack PaaS platform.

When I switched the URL to: -

https://bpm857.novalocal:8443/ProcessAdmin/ProcessAdmin/com.lombardisoftware.processadmin.ProcessAdmin/ProcessAdmin.jsp

the Health Management console burst into life: -

which is nice.