I've got a similar workflow set up but I use VMware's /dcli/ module to
create my instance, which also allows me to explicitly set the MAC
address (and thus force reservations).
Looking at the Packer docs
(https://www.packer.io/docs/builders/vsphere-iso.html) you may be able
to do this as well by defining the Network Adapter before starting the
instance, and use a reservation in Kea to fix the IP.
hth,
Klaus
On Sun, Dec 27, 2020 at 10:40 AM Roland Berger
<roland.ber...@exasoft.ch <mailto:roland.ber...@exasoft.ch>> wrote:
Hi John
Thanks. Packer is a tool to automatically bring up and configure a
virtual machine for the first time. It is like installing, for
example an ubuntu, machine from an iso image: The installer runs
and after completion the new machine makes a reboot and you can
continue to configure the new machine. So, I do not know the MAC
address in advance to make a reservation.
The challenge I think I face is to make sure that the IP address
after the reboot is the same like during first power up when the
os installer is running.
I think I have to create a configuration where kea issues the same
IP for the above scenario. I tried this to make sure that the MAC
address and the hostname are the same. I also configured
networking of the new machine to send 'dhcp-identifier: mac'. But
that is obviously not enough.
Thanks to your answer I see the following things I can try. But
may be you have even a better, simpler idea.
- Create a MAC address by hand and make a reservation
- Try to play around with the lease time for the first DHCP request.
- Use static IP but in this case I don't want to do that if I can
avoid it.
- Configure kea to use only "host-reservation-identifiers":
["hw-address"] but not sure if this would help.
Best Roland
192.168.178.*251*,00:50:56:92:07:82,01:00:50:56:92:07:82,0
,1609062019,1,1,1,ubuntu-server,0,
192.168.178.*252*,00:50:56:92:07:82,01:00:50:56:92:07:82,4000,1609066573,1,1,1,ubuntu-server,0,
www.exasoft.ch <http://www.exasoft.ch>
On 12/27/20 12:06 PM, Gibbins, John (IM&T, Black Mountain) wrote:
Hi Roland,
If the client does not request the same IP as it had before you probably
need to assign a fixed IP to the device.
I'm assuming you have a config which includes your subnet. Something like:
...
"subnet4": [
{
"subnet": "192.168.178.0/24 <http://192.168.178.0/24>",
...
}
]
...
To ensure that you always get the same IP you need to create a reservation
which maps the MAC to the desired IP. Such as:
...
"subnet4": [
{
"subnet": "192.168.178.0/24 <http://192.168.178.0/24>",
...
"reservations": [
{
"hw-address": "00:50:56:92:07:82",
"ip-address": "192.168.178.251"
}
]
}
]
...
You may want to check out the "reservation-mode" attribute if you have both
pools and reservations on the same subnet.
Regards
johng
-----Original Message-----
From: Kea-users<kea-users-boun...@lists.isc.org>
<mailto:kea-users-boun...@lists.isc.org> On Behalf Of rondal
Sent: Sunday, 27 December 2020 9:23 PM
To:kea-users@lists.isc.org <mailto:kea-users@lists.isc.org>
Subject: [Kea-users] Lease same IP for same MAC
Hi, I try to deploy an ubuntu server to vsphere with packer. After
installation has finished the machine reboots an gets an other IP address.
Packer can not complete its work because it is still trying to connect to
the old ip address.
From the kea log I see the following:
192.168.178.*251*,00:50:56:92:07:82,01:00:50:56:92:07:82,0
,1609062019,1,1,1,ubuntu-server,0,
192.168.178.*252*,00:50:56:92:07:82,01:00:50:56:92:07:82,4000,1609066573,1,1,1,ubuntu-server,0,
In the client I configure networking (netplan) with dhcp-identifier: mac
- Any ideas how I can tell kea to lease the same ip, in this case *.251,
again?
Best Roland
--
Sent from:http://kea-users.7364.n8.nabble.com/
_______________________________________________
ISC funds the development of this software with paid support subscriptions.
Contact us athttps://www.isc.org/contact/ for more information.
To unsubscribe visithttps://lists.isc.org/mailman/listinfo/kea-users.
Kea-users mailing list
Kea-users@lists.isc.org <mailto:Kea-users@lists.isc.org>
https://lists.isc.org/mailman/listinfo/kea-users
_______________________________________________
ISC funds the development of this software with paid support
subscriptions. Contact us at https://www.isc.org/contact/ for more
information.
To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users.
Kea-users mailing list
Kea-users@lists.isc.org <mailto:Kea-users@lists.isc.org>
https://lists.isc.org/mailman/listinfo/kea-users
