Payara 5 DataGrid has formed but (according to logfile) not shown in Admin UI

Hey together,

I´m testing some Payara DAS and Data Grid features to elevate our developer instances to an easy to handle payara cluster setup.

I´m starting two Payara 5 Server Full Instances and need them to automatically form a Data Grid to share session files and caches. According to the logfile in both containers this is working. But i cannot see anything of this Grid in none of the admin UIs. I have also tried all other auto discover modes like multicast and it is always the same issue.

Hope you can help me with that.