
I have found the issue in the meantime though I haven’t truly fixed it yet. Besides the issue with port 8285 and 8472, I saw that ufw blocked the forwarding from the local network to kubernetes network and vice versa for the DNS. I still have to investigate how to properly fix this, but I was able to showcase that this is the issue by disabling ufw temporarily (instances are still protected by OpenStack’s network rules) which fixed all issues with dns.
The times we live in are wild. Predicted that, Aldous?