Tootfinder

My best "rubber duck" is whatever public support fora exist for whatever I'm bloodying my forehead on. I rarely actually get useful responses, but just asking does something, sometimes.
e.g. https://forum.opennebula.io/t/debugging-domain-creation/14158/1

Debugging domain creation
Executive Summary: OpenNebula environment grown over 12 years running OpenNebula v5.2, upgrading host OS breaks initial domain creation. Live migration works! Versions of the related components and OS (frontend, hypervisors, VMs): CentOS7 with qemu-kvm on 30 Intel-cpu (Supermicro) hosts. some hosts upgraded to Alma9, fully updated. VMs a mix of versions of FreeBSD, CentOS, Alma, Ubuntu, Windows. CentOS7 hosts have been operating properly for many years. Some Alma9 hosts are new, others are…