I have tried upgrading to SLES15 for my gms vm. The upgrade goes well enough except that you have to decide whether to upgrade the database postgresql to the latest version. I have tried both versions, but get the monitor dead in both cases (rcgms status). When I check the monitor.log file, I get the following:
gms monitor dead, could not connect to server, connection failed. It then lists ports end things.

Anyone got any ideas as it looks like at networking problem.