As a preparation for the Bullseye update we need to switch the KVM machine type for the Ganeti cluster to pc-i440fx-3.1 (the "hardware" provided by qemu 3.1). Otherwise we wouldn't be able to migrate machines between Bullseye (which would default to pc-i440fx-5.0) and Buster nodes.
This requires the following steps:
- sudo gnt-cluster modify --hypervisor-parameters kvm:machine_version=pc-i440fx-3.1
Restart all instances of the cluster. A reboot from within the OS isn't sufficient, this needs to be rebooted on the Ganeti level so that the KVM instance gets restarted (kind of comparable to resetting a computer with the power button). There's a cookbook for this: sre.ganeti.reboot-vm FQDN
- bast4003.wikimedia.org
- doh4001.wikimedia.org
- doh4002.wikimedia.org
- durum4001.ulsfo.wmnet
- durum4002.ulsfo.wmnet
- install4001.wikimedia.org
- ncredir4001.ulsfo.wmnet
- ncredir4002.ulsfo.wmnet
- netflow4002.ulsfo.wmnet
- prometheus4001.ulsfo.wmnet