[Kea-users] Migrate to Kea from non-ISC DHCP server EXTERNAL EMAIL

Thu Apr 13 19:21:56 UTC 2023

Thank you very much Wlodek!  With that info I was able to create a lease file for dhcp4.  The only thing is it seems a collector runs at a certain interval that cleans up the memfile?  Looks like it blows out any loaded leases before they could expire from the old DHCP server.

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Rachael Wilson
(509) 422-8374
From: Kea-users <kea-users-bounces at lists.isc.org> On Behalf Of Wlodek Wencel
Sent: Thursday, April 13, 2023 8:48 AM
To: kea-users at lists.isc.org
Subject: Re: [Kea-users] Migrate to Kea from non-ISC DHCP server ***EXTERNAL EMAIL***

EXTERNAL EMAIL: Please Think Before You Click!!

Couple simple leases files I took out from our automated testing are attached. Please be aware that in user context Kea can store quite extensive info in json structure (also attached).

Hope that will help

Wlodek Wencel

On 13/04/2023 16:42, Rachael Wilson wrote:
Thank you, Darren!  I will give perfdhcp a try.

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Rachael Wilson
(509) 422-8374
From: Kea-users <kea-users-bounces at lists.isc.org><mailto:kea-users-bounces at lists.isc.org> On Behalf Of Darren Ankney
Sent: Thursday, April 13, 2023 3:27 AM
To: kea-users at lists.isc.org<mailto:kea-users at lists.isc.org>
Subject: Re: [Kea-users] Migrate to Kea from non-ISC DHCP server ***EXTERNAL EMAIL***

EXTERNAL EMAIL: Please Think Before You Click!!

Hello Rachael,

There probably isn't an example file anywhere in the documentation (I looked also) or if there is, I just didn't find it.  I would suggest setting up a test kea server with the memfile lease database persisting to a file.  Then use perfdhcp to generate traffic thus populating the file.  If you need specific options to appear in the lease file, it is possible to use perfdhcp to generate most of them (even if you have to create the hex yourself).

Thank you,

Darren Ankney

On Wed, Apr 12, 2023 at 5:19 PM Rachael Wilson <RachaelW at okpud.org<mailto:RachaelW at okpud.org>> wrote:
Hi, I would like to migrate a few thousand DHCP leases from a non-ISC DHCP server to a memfile backed Kea instance.  Looking through the docs, it seems it would be easier to populate the lease file in /var/lib/kea/kea-leases4.csv rather than using hooks.  However, in a fresh install the file only contains the header row.  Is there an example file populated with rows I could look at to properly format the data for import?  Didn’t see anything in the docs, but might have missed it.

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Rachael Wilson | Network Analyst
Public Utility District No. 1 Of Okanogan County
Office: (509) 422-8374 | RachaelW at okpud.org<mailto:RachaelW at okpud.org>
1331 2nd Ave N., Okanogan, WA 98840 | P.O. Box 912, Okanogan, WA 98840

P.U.D. No. 1 of Okanogan County is an equal opportunity provider and employer.  If you think that you have received this message in error, please e-mail the sender at the above e-mail address.

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