[Kea-users] Problem using 'config-set' in API

Fri Mar 8 09:59:46 UTC 2024

Thanks Wlodek!

Cheers,
Andy

Andrew Mulheirn

Senior Network Architect

M: +44 (0) 74 3654 8126 <tel:+44%20(0)%2074%203654%208126>

E: andrew.mulheirn at vorboss.com <mailto:andrew.mulheirn at vorboss.com>

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From: Kea-users <kea-users-bounces at lists.isc.org> On Behalf Of Wlodek Wencel
Sent: Tuesday, March 5, 2024 12:00 PM
To: kea-users at lists.isc.org
Subject: Re: [Kea-users] Problem using 'config-set' in API

Hi,

the reservation-add command will accomplish what you need. However, it's important to note that if you're utilizing a JSON configuration backend, you must use the config-write command to save any reservations added via the reservation-add command. Failing to do so will result in the loss of those reservations upon restarting Kea. If you're using a database to store host reservations, there is no need to use the config-write command.

ARM: https://kea.readthedocs.io/en/latest/arm/hooks.html#libdhcp-host-cmds-so-host-commands

Regards,

Wlodek Wencel

QA, ISC
On 05/03/2024 12:51, Andrew Mulheirn via Kea-users wrote:
Hi Veronique –

Thanks very much! I have since discovered that I can use 'reservation-add' instead, which achieves what I need.  That seems to be additive for host reservations.

Kind regards,
Andy

Andrew Mulheirn

Senior Network Architect

M: +44 (0) 74 3654 8126 <tel:+44%20(0)%2074%203654%208126>

E: andrew.mulheirn at vorboss.com <mailto:andrew.mulheirn at vorboss.com>

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From: Veronique Lefebure <Veronique.Lefebure at cern.ch><mailto:Veronique.Lefebure at cern.ch>
Sent: Tuesday, March 5, 2024 9:49 AM
To: kea-users at lists.isc.org<mailto:kea-users at lists.isc.org>
Cc: Andrew Mulheirn <andrew.mulheirn at vorboss.com><mailto:andrew.mulheirn at vorboss.com>
Subject: Re: Problem using 'config-set' in API

Hi,
config-set will rewrite the whole config file. You cannot "append" a configuration bit. To do so you need to use the API.
Cheers,
V.
________________________________
From: Kea-users <kea-users-bounces at lists.isc.org<mailto:kea-users-bounces at lists.isc.org>> on behalf of Andrew Mulheirn via Kea-users <kea-users at lists.isc.org<mailto:kea-users at lists.isc.org>>
Sent: Tuesday, March 5, 2024 10:06 AM
To: kea-users at lists.isc.org<mailto:kea-users at lists.isc.org> <kea-users at lists.isc.org<mailto:kea-users at lists.isc.org>>
Cc: Andrew Mulheirn <andrew.mulheirn at vorboss.com<mailto:andrew.mulheirn at vorboss.com>>
Subject: [Kea-users] Problem using 'config-set' in API

Hi,

I am trying to use the API and reading it seems to work fine.  However, when I write to it using a config-set action, it seems to stop working until I restart the service.  Here is an example of what I am sending in the API call.   I am trying to add an IP address reservation for a device connected on a particular switch port (using option 18):

{

    "command": "config-set",

    "service": [ "dhcp6" ],

    "arguments":  {

        "Dhcp6": {

            "subnet6": [

                {

                    "subnet": "2a00:e300:1102::/64",

                    "reservations": [

                            {

                            "flex-id": "'xe-0/0/4:rsw001'",

                            "ip-addresses": [ "2a00:e300:1102::8" ]

                            }

                    ]

                }

            ]

        }

    }

}

Perhaps I have misread the documentation – do I need to be sending the entire config in the config-set command?  Or can I add IP address reservations in an additive way like I am trying to do here?

Any help appreciated,

Kind regards,

Andy

Andrew Mulheirn

Senior Network Architect

M: +44 (0) 74 3654 8126 <tel:+44%20(0)%2074%203654%208126>

E: andrew.mulheirn at vorboss.com <mailto:andrew.mulheirn at vorboss.com>

vorboss.com <https://vorboss.com>

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Find out here and take our speed test. <https://check.vorboss.com/>

Disclaimer: This message is private and confidential. If you have received this message in error, please remove it from your system and notify us at sysadmin at vorboss.net <mailto:sysadmin at vorboss.net> or by telephone +44(0)20 3582 8500. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited.   Privacy Note: Vorboss Limited may monitor email traffic data and also the content of email for the purposes of security. This email does not create or vary any contractual obligations between Vorboss Limited and the intended recipient.

Vorboss Limited is a limited company registered in England and Wales. Registered number: 05678571. Registered Office: Vorboss Limited, Broadwalk House, 5 Appold Street, London, EC2A 2AG, UNITED KINGDOM.

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