[Kea-users] Kea-users Digest, Vol 112, Issue 15
chad bachmeier
chad at technicianslist.com
Mon Oct 16 22:32:49 UTC 2023
On Mon, Oct 16, 2023, 17:24 <kea-users-request at lists.isc.org> wrote:
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> Today's Topics:
>
> 1. Re: Configuring HA with multiple interfaces on both the
> appliances (Kraishak Mahtha)
> 2. Re: Configuring HA with multiple interfaces on both the
> appliances (Rick Frey)
> 3. DDNS limitations - ddns-qualifying-suffix vs domain-name
> (Vladimir Nikolic)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 16 Oct 2023 19:07:23 +0530
> From: Kraishak Mahtha <kraishak.edu at gmail.com>
> To: "Kea-users at lists.isc.org" <kea-users at lists.isc.org>
> Subject: Re: [Kea-users] Configuring HA with multiple interfaces on
> both the appliances
> Message-ID:
> <
> CADDat87foZygO-yb0sad1GBTn5JeJC6Jt9Eq+DFYrWgOk_RTbA at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi all,
>
> Re-sending the mail once again to check if anyone is familiar with this
> case, and can guide me.
>
> On Tue, Oct 3, 2023 at 12:32?PM Kraishak Mahtha <kraishak.edu at gmail.com>
> wrote:
>
> > Hi all,
> > I have a few doubts in a case where we have multiple interfaces
> listening
> > in the kea dhcp and configured in HA/Failover mode.
> > For instance: I have server A with four interfaces
> > eth0 (192.168.0.51), eth1 (192.168.0.52), eth2 (192.168.0.53), eth3
> > (192.168.0.54) and server B I have three interfaces
> > eth1(192.168.0.61), eth2(192.168.0.62), eth2(192.168.0.63).
> >
> > Case 1) Can we define failover configuration with servers A and B
> > specifying server A listening on three interfaces and server B listening
> on
> > two interfaces? (no same number of interfaces on both appliances).
> >
> > Case 2) When we have such a configuration how do we deal with the
> failover
> > configuration where we specify only one IP?
> > "peers": [
> > {
> > "role": "primary",
> > "name": "dhcp1",
> > "auto-failover": true,
> > "url": "http://192.168.0.51:8001"
> > },
> > {
> > "role": "secondary",
> > "name": "dhcp2",
> > "auto-failover": true,
> > "url": "http://192.168.0.61:8001"
> > }
> > ],
> > Should we specify all the listening interface IP's in the failover
> > section?
> >
> > Can someone who is familiar with such setups and has faced similar issues
> > guide me?
> >
> > Thanks in Advance
> > Kraishak
> >
> >
> >
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>
> ------------------------------
>
> Message: 2
> Date: Mon, 16 Oct 2023 10:39:18 -0500
> From: Rick Frey <gribnut at gmail.com>
> To: "Kea-users at lists.isc.org" <kea-users at lists.isc.org>
> Subject: Re: [Kea-users] Configuring HA with multiple interfaces on
> both the appliances
> Message-ID: <A316204D-4577-4396-8F6A-8332B5125233 at gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> You can have different number of listening interfaces for HA pair
> (assuming they are able to receive requests for all subnets). The ?url?
> directive in the HA hook configuration is for the Control-Agent (CA). The
> addr/port of the Control-Agent is independent of the DHCP4 server and is
> specified in its config (kea-ctrl-agent.conf). The address for the
> Control-Agent can be different than address(es) you configure for the DHCP4
> server.
>
> > On Oct 16, 2023, at 8:37?AM, Kraishak Mahtha <kraishak.edu at gmail.com>
> wrote:
> >
> > Hi all,
> >
> > Re-sending the mail once again to check if anyone is familiar with this
> case, and can guide me.
> >
> > On Tue, Oct 3, 2023 at 12:32?PM Kraishak Mahtha <kraishak.edu at gmail.com
> <mailto:kraishak.edu at gmail.com>> wrote:
> >> Hi all,
> >> I have a few doubts in a case where we have multiple interfaces
> listening in the kea dhcp and configured in HA/Failover mode.
> >> For instance: I have server A with four interfaces
> >> eth0 (192.168.0.51), eth1 (192.168.0.52), eth2 (192.168.0.53), eth3
> (192.168.0.54) and server B I have three interfaces
> >> eth1(192.168.0.61), eth2(192.168.0.62), eth2(192.168.0.63).
> >>
> >> Case 1) Can we define failover configuration with servers A and B
> specifying server A listening on three interfaces and server B listening on
> two interfaces? (no same number of interfaces on both appliances).
> >>
> >> Case 2) When we have such a configuration how do we deal with the
> failover configuration where we specify only one IP?
> >> "peers": [
> >> {
> >> "role": "primary",
> >> "name": "dhcp1",
> >> "auto-failover": true,
> >> "url": "http://192.168.0.51:8001 <
> http://192.168.0.51:8001/>"
> >> },
> >> {
> >> "role": "secondary",
> >> "name": "dhcp2",
> >> "auto-failover": true,
> >> "url": "http://192.168.0.61:8001 <
> http://192.168.0.61:8001/>"
> >> }
> >> ],
> >> Should we specify all the listening interface IP's in the failover
> section?
> >>
> >> Can someone who is familiar with such setups and has faced similar
> issues guide me?
> >>
> >> Thanks in Advance
> >> Kraishak
> >>
> >>
> > --
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> ------------------------------
>
> Message: 3
> Date: Mon, 16 Oct 2023 23:23:42 +0100
> From: Vladimir Nikolic <vladimir at nikolic.si>
> To: kea-users at lists.isc.org
> Subject: [Kea-users] DDNS limitations - ddns-qualifying-suffix vs
> domain-name
> Message-ID: <f221d9589b291b11a1fcda10539507cc at nikolic.si>
> Content-Type: text/plain; charset=US-ASCII; format=flowed
>
> Hi,
>
> While trying to migrate DHCP service from ISC DHCP to ISC KEA, we are
> hitting following KEA limitations:
>
> - option domain-name has no part in DDNS names construction, it's only
> ddns-qualifying-suffix that's being honoured
> - ddns-qualifying-suffix can't be specified in the class definition (we
> have dedicated zone for our OOB devices)
> - there can be only one DDNS zone for all the clients in a subnet
> (ddns-qualifying-suffix), with ISC DHCP you can have one default
> domain-name for a subnet and every single host reservation with a
> different domain-name (DDNS zone)
>
> Regards,
> Vladimir
>
>
> ------------------------------
>
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> ------------------------------
>
> End of Kea-users Digest, Vol 112, Issue 15
> ******************************************
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