[stork-users] reservations-out-of-pool

Thu Jan 9 15:05:29 UTC 2025

Hi Slawek.

Yes many thanks!

KInd regards,

Ronald

________________________________
From: Slawek Figiel <slawek at isc.org>
Sent: Thursday, January 9, 2025 15:18
To: DDFR | Ronald Blaas <ronald.blaas at ddfr.nl>; stork-users at lists.isc.org <stork-users at lists.isc.org>
Subject: Re: [stork-users] reservations-out-of-pool

Ronald,

see the section 5 in this KB article:
https://eur05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fkb.isc.org%2Fv1%2Fdocs%2Fen%2Fkea-performance-optimization&data=05%7C02%7Cronald.blaas%40ddfr.nl%7Cd894c14c1a924256fe9c08dd30b88673%7C61b60fb772d74ba78225d9b5369d780a%7C0%7C0%7C638720291305691875%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=nenr0%2FvNjUpbYs3WC529ygJEAo%2Bcfw6VtAeIN1D70bM%3D&reserved=0<https://kb.isc.org/v1/docs/en/kea-performance-optimization> and these ARM
pages:

- DHCPv4:
https://eur05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fkea.readthedocs.io%2Fen%2Fkea-2.6.1%2Farm%2Fdhcp4-srv.html%23fine-tuning-dhcpv4-host-reservation&data=05%7C02%7Cronald.blaas%40ddfr.nl%7Cd894c14c1a924256fe9c08dd30b88673%7C61b60fb772d74ba78225d9b5369d780a%7C0%7C0%7C638720291305717235%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=xp3847flNsdeYxdIpQsd4oMFK2ugszuAB4dCw%2F0oheI%3D&reserved=0<https://kea.readthedocs.io/en/kea-2.6.1/arm/dhcp4-srv.html#fine-tuning-dhcpv4-host-reservation>
- DHCPv6:
https://eur05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fkea.readthedocs.io%2Fen%2Fkea-2.6.1%2Farm%2Fdhcp6-srv.html%23fine-tuning-dhcpv6-host-reservation&data=05%7C02%7Cronald.blaas%40ddfr.nl%7Cd894c14c1a924256fe9c08dd30b88673%7C61b60fb772d74ba78225d9b5369d780a%7C0%7C0%7C638720291305731298%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=K2HS4mRwwt0rhUDQGnrMH4ci%2BM7r96Zkw%2BMy0pXbHqA%3D&reserved=0<https://kea.readthedocs.io/en/kea-2.6.1/arm/dhcp6-srv.html#fine-tuning-dhcpv6-host-reservation>

Regards
Slawek Figiel

On 1/9/25 3:07 PM, DDFR | Ronald Blaas wrote:
> Hi Slawek,
>
> Thanks for your reply
>
> It is unclear to me wether I have to change my config or this is a
> checker problem.
>
> I can find the substition for reservation-mode to "reservations-out-of-
> pool" but it is unclear how to set this in the config.
> I could not find a config example for this.
>
> Maybe you have an example for me?
>
> Regards,
>
> Ronald
>
> ------------------------------------------------------------------------
> *From:* Slawek Figiel <slawek at isc.org>
> *Sent:* Thursday, January 9, 2025 14:38
> *To:* stork-users at lists.isc.org <stork-users at lists.isc.org>; DDFR |
> Ronald Blaas <ronald.blaas at ddfr.nl>
> *Subject:* Re: [stork-users] reservations-out-of-pool
> Hello Ronald!
>
> The "reservation-mode" parameter was supported in the 1.8.X branch of
> Kea DHCP. The behaviors have changed in the 1.9 branch: more flexible
> configuration options were introduced called "reservations-global",
> "reservations-in-subnet" and "reservations-out-of-pool" to replace the
> old "reservation-mode" parameter.
>
> Stork supports both approaches and works properly no matter how you set
> the out-of-pool mode.
>
> In Kea 2.6.x, you need to set the out-of-pool mode by the
> "reservations-out-of-pool" parameter.
>
> I opened https://eur05.safelinks.protection.outlook.com/?
> url=https%3A%2F%2Fgitlab.isc.org%2Fisc-projects%2Fstork%2F-
> %2Fissues%2F1668&data=05%7C02%7Cronald.blaas%40ddfr.nl%7C7c2790e28fd34c90ff6408dd30b2d93c%7C61b60fb772d74ba78225d9b5369d780a%7C0%7C0%7C638720266921208795%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=CRyiMGTQqkdmYAyUyuckrjDC%2F53EqELk4bA0mN8d5lw%3D&reserved=0 <https://eur05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.isc.org%2Fisc-projects%2Fstork%2F-%2Fissues%2F1668&data=05%7C02%7Cronald.blaas%40ddfr.nl%7Cd894c14c1a924256fe9c08dd30b88673%7C61b60fb772d74ba78225d9b5369d780a%7C0%7C0%7C638720291305749024%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=%2FzC5%2F4K2b6Ms2ts9Q4dwi8IhvtFJPIV%2BGe3qJJhJ6q4%3D&reserved=0<https://gitlab.isc.org/isc-projects/stork/-/issues/1668>> to
> improve the checker message.
>
> Thank you for your feedback!
> Regards,
> Slawek Figiel
>
>
> On 1/9/25 11:36 AM, DDFR | Ronald Blaas wrote:
>  > Hi All,
>  >
>  > Just notices something
>  >
>  >
>  > In Stork (v2.0.0)  I see a configuration issue
>  >
>  >
>  > /Kea /daemon [29] dhcp4 <https://
> eur05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstork-
> test.ddfman.nl%3A8080%2Fapps%2Fkea%2F14&data=05%7C02%7Cronald.blaas%40ddfr.nl%7C7c2790e28fd34c90ff6408dd30b2d93c%7C61b60fb772d74ba78225d9b5369d780a%7C0%7C0%7C638720266921228155%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=b7BO2FJy6MfaoRB9nAM0LpEq3n25535OSmTs2dMvDEQ%3D&reserved=0?
>  > daemon=dhcp4>/configuration includes 2 subnets for which it is
>  > recommended to use out-of-pool host-reservation mode. Reservations
>  > specified for these subnets are outside the dynamic address pools. Using
>  > out-of-pool reservation mode prevents Kea from checking host-reservation
>  > existence when allocating in-pool addresses, thus improving performance./
>  >
>  > /
>  > /
>  >
>  > /
>  > /
>  >
>  > But this option "reservation-mode" has been removed from isc-kea 2.6.x ?
>  >
>  >
>  > So my guess is that stork needs an update in the checkers
>  >
>  > Could this be confirmed?
>  >
>  >
>  > Thanks for any clarification 🙂
>  >
>  >
>  > Regards,
>  >
>  >
>  > Ronald
>  >
>  >
>  >
>

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