[Kea-users] kea-dhcp4 -t file: check the configuration file syntax and exit but fails because of interface

[Veronique Lefebure]

Checking every configuration bits for production is definitively an 
excellent thing. But one could have an option to skip validating some 
part(s) of them.

On 27/08/2021 15:38, perl-list wrote:
> I understand, but you don't have to put the configuration file in its final home, you could drop it in /tmp/ or equivalent and run kea-dhcp4 -t /tmp/kea-dhcp4.conf and then copy it into place if it passes the test.
>
> I doubt that ISC is going to be keen to not check certain bits of the configuration file (such as the interface section).
>
> ----- Original Message -----
>> From: "Veronique Lefebure" <veronique.lefebure at cern.ch>
>> To: "perl-list" <perl-list at network1.net>, "kea-users" <Kea-users at lists.isc.org>
>> Sent: Friday, August 27, 2021 9:29:40 AM
>> Subject: Re: [Kea-users] kea-dhcp4 -t file: check the configuration file syntax and exit but fails because of interface
>> We want to be able to validate the configuration file without
>> touching/accessing the production servers, for example for
>> developing/testing/validating changes in the software that generates the
>> configuration file.
>> On 27/08/2021 15:12, perl-list wrote:
>>> Is it not possible to, instead, check the conf file on host2 where it will live?
>>> ----- Original Message -----
>>>> From: "Veronique Lefebure" <veronique.lefebure at cern.ch>
>>>> To: "kea-users" <Kea-users at lists.isc.org>
>>>> Sent: Friday, August 27, 2021 5:39:15 AM
>>>> Subject: [Kea-users] kea-dhcp4 -t file: check the configuration file syntax and
>>>> exit but fails because of interface
>>>> Hi,
>>>> Before deploying a new kea configuration file on our DHCP server, we
>>>> want to validate it.
>>>> The configuration file "kea-dhcp4.conf" is generated on host1 where we
>>>> want to validate it by running
>>>> kea-dhcp4 -t kea-dhcp4.conf
>>>> And once validation has passed, we plan to deploy "kea-dhcp4.conf" ho
>>>> the KEA server running on host2.
>>>> The problem we have is that validation fails with the following error:
>>>> Error encountered: Failed to select interface: interface 'xxxxx' doesn't
>>>> exist in the system (kea-dhcp4.conf:225:9) (kea-dhcp4.conf:224:7)
>>>> coming from
>>>> "interfaces-config": {
>>>> "interfaces": [
>>>> "xxxxx"
>>>> ],
>>>> "dhcp-socket-type": "udp"
>>>> },
>>>> Interface 'xxxxx' may exist on host2 but not on host1.
>>>> Is anyone encountering the same problem ?
>>>> Is there a work-around ?
>>>> Thanks,
>>>> Veronique
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