<div dir="auto"></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Oct 16, 2023, 17:24 <<a href="mailto:kea-users-request@lists.isc.org">kea-users-request@lists.isc.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send Kea-users mailing list submissions to<br>
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Today's Topics:<br>
<br>
1. Re: Configuring HA with multiple interfaces on both the<br>
appliances (Kraishak Mahtha)<br>
2. Re: Configuring HA with multiple interfaces on both the<br>
appliances (Rick Frey)<br>
3. DDNS limitations - ddns-qualifying-suffix vs domain-name<br>
(Vladimir Nikolic)<br>
<br>
<br>
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<br>
Message: 1<br>
Date: Mon, 16 Oct 2023 19:07:23 +0530<br>
From: Kraishak Mahtha <<a href="mailto:kraishak.edu@gmail.com" target="_blank" rel="noreferrer">kraishak.edu@gmail.com</a>><br>
To: "<a href="mailto:Kea-users@lists.isc.org" target="_blank" rel="noreferrer">Kea-users@lists.isc.org</a>" <<a href="mailto:kea-users@lists.isc.org" target="_blank" rel="noreferrer">kea-users@lists.isc.org</a>><br>
Subject: Re: [Kea-users] Configuring HA with multiple interfaces on<br>
both the appliances<br>
Message-ID:<br>
<<a href="mailto:CADDat87foZygO-yb0sad1GBTn5JeJC6Jt9Eq%2BDFYrWgOk_RTbA@mail.gmail.com" target="_blank" rel="noreferrer">CADDat87foZygO-yb0sad1GBTn5JeJC6Jt9Eq+DFYrWgOk_RTbA@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hi all,<br>
<br>
Re-sending the mail once again to check if anyone is familiar with this<br>
case, and can guide me.<br>
<br>
On Tue, Oct 3, 2023 at 12:32?PM Kraishak Mahtha <<a href="mailto:kraishak.edu@gmail.com" target="_blank" rel="noreferrer">kraishak.edu@gmail.com</a>><br>
wrote:<br>
<br>
> Hi all,<br>
> I have a few doubts in a case where we have multiple interfaces listening<br>
> in the kea dhcp and configured in HA/Failover mode.<br>
> For instance: I have server A with four interfaces<br>
> eth0 (192.168.0.51), eth1 (192.168.0.52), eth2 (192.168.0.53), eth3<br>
> (192.168.0.54) and server B I have three interfaces<br>
> eth1(192.168.0.61), eth2(192.168.0.62), eth2(192.168.0.63).<br>
><br>
> Case 1) Can we define failover configuration with servers A and B<br>
> specifying server A listening on three interfaces and server B listening on<br>
> two interfaces? (no same number of interfaces on both appliances).<br>
><br>
> Case 2) When we have such a configuration how do we deal with the failover<br>
> configuration where we specify only one IP?<br>
> "peers": [<br>
> {<br>
> "role": "primary",<br>
> "name": "dhcp1",<br>
> "auto-failover": true,<br>
> "url": "<a href="http://192.168.0.51:8001" rel="noreferrer noreferrer" target="_blank">http://192.168.0.51:8001</a>"<br>
> },<br>
> {<br>
> "role": "secondary",<br>
> "name": "dhcp2",<br>
> "auto-failover": true,<br>
> "url": "<a href="http://192.168.0.61:8001" rel="noreferrer noreferrer" target="_blank">http://192.168.0.61:8001</a>"<br>
> }<br>
> ],<br>
> Should we specify all the listening interface IP's in the failover<br>
> section?<br>
><br>
> Can someone who is familiar with such setups and has faced similar issues<br>
> guide me?<br>
><br>
> Thanks in Advance<br>
> Kraishak<br>
><br>
><br>
><br>
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Message: 2<br>
Date: Mon, 16 Oct 2023 10:39:18 -0500<br>
From: Rick Frey <<a href="mailto:gribnut@gmail.com" target="_blank" rel="noreferrer">gribnut@gmail.com</a>><br>
To: "<a href="mailto:Kea-users@lists.isc.org" target="_blank" rel="noreferrer">Kea-users@lists.isc.org</a>" <<a href="mailto:kea-users@lists.isc.org" target="_blank" rel="noreferrer">kea-users@lists.isc.org</a>><br>
Subject: Re: [Kea-users] Configuring HA with multiple interfaces on<br>
both the appliances<br>
Message-ID: <<a href="mailto:A316204D-4577-4396-8F6A-8332B5125233@gmail.com" target="_blank" rel="noreferrer">A316204D-4577-4396-8F6A-8332B5125233@gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
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.<br>
<br>
> On Oct 16, 2023, at 8:37?AM, Kraishak Mahtha <<a href="mailto:kraishak.edu@gmail.com" target="_blank" rel="noreferrer">kraishak.edu@gmail.com</a>> wrote:<br>
> <br>
> Hi all, <br>
> <br>
> Re-sending the mail once again to check if anyone is familiar with this case, and can guide me. <br>
> <br>
> On Tue, Oct 3, 2023 at 12:32?PM Kraishak Mahtha <<a href="mailto:kraishak.edu@gmail.com" target="_blank" rel="noreferrer">kraishak.edu@gmail.com</a> <mailto:<a href="mailto:kraishak.edu@gmail.com" target="_blank" rel="noreferrer">kraishak.edu@gmail.com</a>>> wrote:<br>
>> Hi all, <br>
>> I have a few doubts in a case where we have multiple interfaces listening in the kea dhcp and configured in HA/Failover mode.<br>
>> For instance: I have server A with four interfaces<br>
>> 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<br>
>> eth1(192.168.0.61), eth2(192.168.0.62), eth2(192.168.0.63).<br>
>> <br>
>> 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).<br>
>> <br>
>> Case 2) When we have such a configuration how do we deal with the failover configuration where we specify only one IP?<br>
>> "peers": [<br>
>> {<br>
>> "role": "primary",<br>
>> "name": "dhcp1",<br>
>> "auto-failover": true,<br>
>> "url": "<a href="http://192.168.0.51:8001" rel="noreferrer noreferrer" target="_blank">http://192.168.0.51:8001</a> <<a href="http://192.168.0.51:8001/" rel="noreferrer noreferrer" target="_blank">http://192.168.0.51:8001/</a>>"<br>
>> },<br>
>> {<br>
>> "role": "secondary",<br>
>> "name": "dhcp2",<br>
>> "auto-failover": true,<br>
>> "url": "<a href="http://192.168.0.61:8001" rel="noreferrer noreferrer" target="_blank">http://192.168.0.61:8001</a> <<a href="http://192.168.0.61:8001/" rel="noreferrer noreferrer" target="_blank">http://192.168.0.61:8001/</a>>"<br>
>> }<br>
>> ],<br>
>> Should we specify all the listening interface IP's in the failover section? <br>
>> <br>
>> Can someone who is familiar with such setups and has faced similar issues guide me? <br>
>> <br>
>> Thanks in Advance<br>
>> Kraishak <br>
>> <br>
>> <br>
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Message: 3<br>
Date: Mon, 16 Oct 2023 23:23:42 +0100<br>
From: Vladimir Nikolic <<a href="mailto:vladimir@nikolic.si" target="_blank" rel="noreferrer">vladimir@nikolic.si</a>><br>
To: <a href="mailto:kea-users@lists.isc.org" target="_blank" rel="noreferrer">kea-users@lists.isc.org</a><br>
Subject: [Kea-users] DDNS limitations - ddns-qualifying-suffix vs<br>
domain-name<br>
Message-ID: <<a href="mailto:f221d9589b291b11a1fcda10539507cc@nikolic.si" target="_blank" rel="noreferrer">f221d9589b291b11a1fcda10539507cc@nikolic.si</a>><br>
Content-Type: text/plain; charset=US-ASCII; format=flowed<br>
<br>
Hi,<br>
<br>
While trying to migrate DHCP service from ISC DHCP to ISC KEA, we are <br>
hitting following KEA limitations:<br>
<br>
- option domain-name has no part in DDNS names construction, it's only <br>
ddns-qualifying-suffix that's being honoured<br>
- ddns-qualifying-suffix can't be specified in the class definition (we <br>
have dedicated zone for our OOB devices)<br>
- there can be only one DDNS zone for all the clients in a subnet <br>
(ddns-qualifying-suffix), with ISC DHCP you can have one default <br>
domain-name for a subnet and every single host reservation with a <br>
different domain-name (DDNS zone)<br>
<br>
Regards,<br>
Vladimir<br>
<br>
<br>
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End of Kea-users Digest, Vol 112, Issue 15<br>
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</blockquote></div>