dciabrin:

ok so in the mean time, here's my backup plan. I'm going to
enable wsrep_notify_cmd=/path/wsrep_notify.sh in the galera config to run a
bash hook whenever a node get's connected to the primary componenat

the script is being called by galera on all the pods. It's passing the list of
members/pods that are in the active partition IIUC, so I'll sort this list of
UUID, pick the 1st one and the pod that has the 1st UUID will be in charge of
updating the "active" endpoint in the k8s service.

that way i'm guaranteed that only a node from the active partition will be
elected, and only one will do the update.

I think that's a good approximation of A/P and it doesn't introduce much
complexity