On 11/17/2017 9:37 AM, SoupNazi izaNpuoS wrote:
Out of curiosity, was there a reason you didn't use the built in failover configuration in ISC DHCP?
It's extremely confusing to me. Perhaps my understanding is flawed, but as I understand it, you need to split your pool and have one side responsible for their individual split. Our pools do not have enough spare IPs to allow that. It just never seemed work the effort.
--John
On Fri, Nov 17, 2017 at 9:25 AM, John Ratliff <[email protected] <mailto:[email protected]>> wrote:I'm seeking best practice advice on how to setup DHCP server redundancy with kea. With ISC DHCP, I used VRRP with two servers and configured it to send the dhcp-server-identifier option as the VRRP IP. Then I would run a script that sync'd the lease database automatically via cron. This process is messy and error prone, so I would like to use kea instead. The subnets I am allocating via DHCP is not the same subnet that the server is in, so we use ip-helper statements to forward DHCP requests to the server. I have kea using mySQL as a lease backend. The mySQL server is not on the same machine as kea. My first thought was to use VRRP and supply the dhcp-server-identifier option again. I ran into a problem though that if kea started before VRRP, it wouldn't listen on the VRRP IP. There is probably a solution to that, but I don't have one yet. So then I changed the router configuration to use two ip-helper statements, sending the request to both primary and secondary kea servers; I also removed the dhcp-server-identifier option. This seems to work. Is this a reasonable setup for DHCP redundancy with kea? Is there a better option I might want to consider? Are there any concerns I should be aware of with both servers being active? Thanks. _______________________________________________ Kea-users mailing list [email protected] <mailto:[email protected]> https://lists.isc.org/mailman/listinfo/kea-users <https://lists.isc.org/mailman/listinfo/kea-users>
_______________________________________________ Kea-users mailing list [email protected] https://lists.isc.org/mailman/listinfo/kea-users
