[Kea-users] Multiple HA Configurations for one server

[Darren Ankney]

Hello Kraishak,

Yes.  2.3.4 is a development version.  2.4.0 will be the stable
version that will contain changes from the 2.3.x development branch.

You can still try the shared lease database in 2.2.0, you just might
experience an elevated amount of DHCP traffic as REQUESTS are NAK'd
because the other server(s) already allocated the offered address to a
different client.

Thank you,

Darren Ankney

On Fri, May 5, 2023 at 8:57 AM Kraishak Mahtha <kraishak.edu at gmail.com> wrote:
>
> Hi Darren,
>
> Thanks for the confirmation, and also for sharing about the 2.3.4 release key point,
> Actually, when I saw the ISC website they say that the last stable version is 2.2.0 so I am trying that in my data center for now, will check more about the latest versions
>
>
> On Fri, May 5, 2023 at 4:06 PM Darren Ankney <darren.ankney at gmail.com> wrote:
>>
>> Hi Kraishak,
>>
>> Currently there is no such possibility in Kea HA hook.  Only the
>> servers themselves are able to be in a primary and secondary
>> relationship and there can be only two.  What you can do is use a
>> database  server (mysql or postgres) storage for leases and point all
>> servers with the same subnets configured at the same database (be sure
>> and give the subnets matching ids on all servers or that could be
>> interesting).  This is more feasible after the random lease allocator
>> was introduced in version 2.3.4 as multiple Kea servers are less
>> likely to offer the same address to multiple clients.
>>
>> Thank you,
>>
>> Darren Ankney
>>
>> On Thu, May 4, 2023 at 7:40 AM Kraishak Mahtha <kraishak.edu at gmail.com> wrote:
>> >
>> > Hi all,
>> >
>> > I am checking if the kea-HA can be supportive for multiple HA relationships like say server-A and server-B being in a HA for subnet1, subnet2
>> > 1)While the above is configured, can we make one more HA relation between Server A and Server C for other subnets?
>> > 2)Can we make Server A primary for a few subnets and failover for other subnets?
>> >
>> > Can someone guide me if anyone has a similar requirement configuration or is aware of the use case reference?
>> >
>> > Thanks in Advance
>> >
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