Hi Marcin, thanks for the quick reply.
On 9 Jul 2025, at 17:36, Marcin Siodelski wrote: > Carsten > The following chapter: > https://kea.readthedocs.io/en/kea-3.0.0/arm/hooks.html#controlled-shutdown-and-maintenance-of-dhcp-servers > explains that: > > "If the server has many relationships with different partners, the > ha-maintenance-start command attempts to transition all of the relationships > into the partner-in-maintenance state by sending ha-maintenance-notify to all > partner servers. If this step fails for any server, an error is returned. If > that happens, the ha-maintenance-cancel command can be used to resume normal > operations and fix the issue." > this behaviour seems to be quite an operational risk. In an hub-and-spoke setup with many (> 40) HA-relationships, one "spoke" DHCP-server needing maintenance will result in all relationships going into maintenance. That puts quite a burden (and possibly load) on the "hub" server. I've opened feature request #4002 in Gitlab, maybe the HA-maintenance can be improved in future versions. Greetings Carsten -- ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. Kea-users mailing list Kea-users@lists.isc.org https://lists.isc.org/mailman/listinfo/kea-users
