[Kea-users] Configuring HA with multiple interfaces on both the appliances

[Kraishak Mahtha]

Hi Rick,

Thanks for your response and explanation but I a using the kea-dhcp with
(HA + MT) mode hence I will be not using the kea-control agent in my
regular use case, so the IPs for the URLs will be of interface IP address
but as said if we have different listening interfaces ......I am a bit
confused about the configuration.

Thanks
Kraishak

On Mon, Oct 16, 2023 at 9:09 PM Rick Frey <gribnut at gmail.com> wrote:

> You can have different number of listening interfaces for HA pair
> (assuming they are able to receive requests for all subnets).  The “url”
> directive in the HA hook configuration is for the Control-Agent (CA).  The
> addr/port of the Control-Agent is independent of the DHCP4 server and is
> specified in its config (kea-ctrl-agent.conf).  The address for the
> Control-Agent can be different than address(es) you configure for the DHCP4
> server.
>
> On Oct 16, 2023, at 8:37 AM, Kraishak Mahtha <kraishak.edu at gmail.com>
> wrote:
>
> Hi all,
>
> Re-sending the mail once again to check if anyone is familiar with this
> case, and can guide me.
>
> On Tue, Oct 3, 2023 at 12:32 PM Kraishak Mahtha <kraishak.edu at gmail.com>
> wrote:
>
>>  Hi all,
>>  I have a few doubts in a case where we have multiple interfaces
>> listening in the kea dhcp and configured in HA/Failover mode.
>> For instance: I have server A with four interfaces
>>  eth0 (192.168.0.51), eth1 (192.168.0.52), eth2 (192.168.0.53), eth3
>> (192.168.0.54) and server B I have three interfaces
>> eth1(192.168.0.61), eth2(192.168.0.62), eth2(192.168.0.63).
>>
>> Case 1) Can we define failover configuration with servers A and B
>> specifying server A listening on three interfaces and server B listening on
>> two interfaces? (no same number of interfaces on both appliances).
>>
>> Case 2) When we have such a configuration how do we deal with the
>> failover configuration where we specify only one IP?
>> "peers": [
>>             {
>>                 "role": "primary",
>>                 "name": "dhcp1",
>>                 "auto-failover": true,
>>                 "url": "http://192.168.0.51:8001"
>>             },
>>             {
>>                 "role": "secondary",
>>                 "name": "dhcp2",
>>                 "auto-failover": true,
>>                 "url": "http://192.168.0.61:8001"
>>             }
>>        ],
>> Should we specify all the listening interface IP's in the failover
>> section?
>>
>> Can someone who is familiar with such setups and has faced similar issues
>> guide me?
>>
>> Thanks in Advance
>> Kraishak
>>
>>
>> --
> 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 at lists.isc.org
> https://lists.isc.org/mailman/listinfo/kea-users
>
>
> --
> 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 at lists.isc.org
> https://lists.isc.org/mailman/listinfo/kea-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isc.org/pipermail/kea-users/attachments/20231018/12f3f5bb/attachment.htm>