> On Apr 20, 2023, at 2:50 PM, Peter Davies <pet...@isc.org> wrote: > > Hi - > Thanks for the log files. > > There isn't much to comment on here. Your HA configuration appears to be > working. > HA Heartbeat commands are being sent and received correctly in both > directions. > There are some HA warnings but they were generated on kea-1 before kea-2 was > up > and running, and on kea-2 after kea-1 had been shut down. > > What I don't see is any dhcp traffic. > > I suggest you let the servers run for a while and see what happens. If you > can't > use live DHCP traffic you can use "perfdhcp" or "dhclient" to generate some. > > For the secondary to start processing DHCPDISCOVERs the HA parameters > "max-unacked-clients" and "max-ack-delay" are considered as well as the > status of the primary. > The default value for the "max-ack-delay" parameter is 10000 milliseconds. > The default value of the "max-unacked-clients" parameter is 10. > see: > https://kea.readthedocs.io/en/kea-2.0.3/arm/hooks.html#load-balancing-configuration >
I think this made me realize the behavior here. Since this is a lab - it’s very “quiet”. I only have a few machines that I ifup/down/reboot/etc to get DHCP requests going. I have now set unacked clients to 0 and I get my expected behavior (i.e. immediate (well after the timers…) transition to an active state). > When you have your configuration working, I suggest you also consider > enabling multi-threading. > see: > https://kea.readthedocs.io/en/kea-2.2.0/arm/dhcp4-srv.html#multi-threading-settings > > With multi-threading enabled, you can enable multi-threaded HA. > see: > https://kea.readthedocs.io/en/kea-2.2.0/arm/hooks.html#multi-threaded-configuration-ha-mt > > Multi-threaded HA creates a direct HA connection between the HA servers and > does > not go through the control agent. I will definitely read through the docs on this. And I know this next question may be a bit difficult/subjective perhaps to answer - but my use case is my home network with fairly long leases. It’s also on the “quiet” side. This obviously isn’t the load/rps of say a college campus, municipal wifi, etc. Would multithreading still be recommended ? I’ve been running ISC dhcpd for years with no issues. Thanks again. -- 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
