Re: [Kea-users] Is Kea-DHCP able to support a /30 network?

2024-01-14 Thread Sandro

On 11-01-2024 23:14, Klaus Steden wrote:

FWIW we've used Kea with /31s in our environment successfully (although
_why_  we used /31s is itself dumb and I can't recommend it)


Sounds like this would lend itself for a nice blog post. I'm looking 
forward to it. ;)


-- Sandro

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Re: [Kea-users] How do I install and configure ISC Kea DHCP Server on RHEL 9.0?

2022-11-15 Thread Sandro

On 15-11-2022 17:20, Ricardo J. Barberis wrote:

Sorry for my previous emtpy email, I accidentally pressed send :(


Happen to all of us. ;)


El martes, 15 de noviembre de 2022 06:03:47 -03 Sandro escribio:

On 15-11-2022 05:50, Kenneth Porter wrote:

On 11/14/2022 7:53 AM, Dan Oachs wrote:

I would start by installing the cloudsmith repository and then you can
use yum/dnf to install kea:
https://cloudsmith.io/~isc/repos/kea-2-2/setup/#formats-rpm

Once you have kea installed, follow the Kea documentation here:
https://kea.readthedocs.io/en/kea-2.2.0/


Is there any reason to avoid kea-2.3? I've been using 2.1.7 on CentOS 7
and am about to migrate my config to a Rocky 8 server.


I would recommend, if possible, to update straight to Rocky 9, or
better, since you are on CentOS, to CentOS Stream 9.

Otherwise you'll have to upgrade again in ~18 month, when Rocky 8
(CentOS Stream 8) goes EOL. Kea is available for el9 from EPEL (version
2.2.0).

-- Sandro


I just wanted to clarify that Rocky Linux (and Alma Linux) follow RHEL, not
CentOS Stream, so you have 10 years of support.


Since RHEL 8, Red Hat offers 5 years of full support and another 5 years 
of maintenance support [1]. I'm no expert on the difference, but to my 
understanding only high priority issues will be fixed at Red Hat's 
discretion during maintenance support. The last minor release of RHEL 8, 
which marks the end of full support, is scheduled for May 2024 [2].


So, yeah, I was wrong saying RHEL 8 is going EOL in May 2024. But since 
RHEL 9 is already out, I'd go with that. In the same fashion I will 
shortly upgrade from Fedora 35 to 37, skipping 36.


Since CentOS Stream is a different beast all together, Rocky 9 (or any 
other RHEL clone version 9) would be my choice when upgrading from 
CentOS 7. For a fresh install, I'd definitely consider CentOS Stream 9.


[1] https://access.redhat.com/support/policy/updates/errata/
[2] 
https://endoflife.software/operating-systems/linux/red-hat-enterprise-linux-rhel


-- Sandro
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Re: [Kea-users] How do I install and configure ISC Kea DHCP Server on RHEL 9.0?

2022-11-15 Thread Sandro

On 15-11-2022 05:50, Kenneth Porter wrote:

On 11/14/2022 7:53 AM, Dan Oachs wrote:

I would start by installing the cloudsmith repository and then you can
use yum/dnf to install kea:
https://cloudsmith.io/~isc/repos/kea-2-2/setup/#formats-rpm

Once you have kea installed, follow the Kea documentation here:
https://kea.readthedocs.io/en/kea-2.2.0/


Is there any reason to avoid kea-2.3? I've been using 2.1.7 on CentOS 7
and am about to migrate my config to a Rocky 8 server.


I would recommend, if possible, to update straight to Rocky 9, or 
better, since you are on CentOS, to CentOS Stream 9.


Otherwise you'll have to upgrade again in ~18 month, when Rocky 8 
(CentOS Stream 8) goes EOL. Kea is available for el9 from EPEL (version 
2.2.0).


-- Sandro
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Re: [Kea-users] naming inconsistency

2022-07-12 Thread Sandro

On 12-07-2022 18:16, Francis Dupont wrote:

Sandro writes:

When using keactrl to manage the daemons, the servers are specified with
an underscore (dhcp_ddns, ctrl_agent), wheres the corresponding daemons
use dashes. Is there a reason for that inconsistency?


Daemon filenames are the only case where the dash (character '-')
has no meaning at all. In all programming languages including the shell
(so a command line) it can get a meaning so be misinterpreted.


I'm not quite sure I follow. What can be passed to the `--server` option 
is defined and checked by keactrl. It's not a leading dash or a dash on 
its own, either.


-- Sandro
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Re: [Kea-users] Where to configure lease length used by kea-dhcp-ddns

2022-07-12 Thread Sandro

On 12-07-2022 14:44, veronique.lefeb...@cern.ch wrote:

I had the same question some time ago. 
See https://gitlab.isc.org/isc-projects/kea/-/issues/225#note_264521


Thank you for the pointer. At least now I know which parameter to tune. 
But it would be nice if there were an option in kea-dhcp-ddns allowing 
for a transparent overwrite.


-- Sandro
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[Kea-users] Where to configure lease length used by kea-dhcp-ddns

2022-07-12 Thread Sandro

Hi,

I have setup kea-dhcp4 to hand out IP addresses and kea-dhcp-ddns to 
update DNS (BIND). That works. But I need to tune the TTL used in the 
updates.


In the log kea-dhcp-ddns tells me:

Lease Length: 14000

That's also the TTL value used in the zone update. However, it does not 
correspond to either `min-valid-lifetime`, `valid-lifetime` nor 
`max-valid-lifetime` in kea-dhcp4.conf.


From the log kea-dhcp4 hands out leases with a lifetime of 42000s, 
which is what I set in `valid-lifetime`:


lease 192.168.101.151 has been allocated for 42000 seconds

So, which configuration parameter in either kea-dhcp-ddns.conf or 
kea-dhcp4.conf do I need to tune to adjust the TTL used in DDNS updates?


I searched through the manual, but failed to find a hint.

-- Sandro
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[Kea-users] naming inconsistency

2022-07-12 Thread Sandro

Hi,

When using keactrl to manage the daemons, the servers are specified with 
an underscore (dhcp_ddns, ctrl_agent), wheres the corresponding daemons 
use dashes. Is there a reason for that inconsistency?


It leads to interesting "dialogues":

# keactrl reload -s dhcp-ddns
ERROR/keactrl: invalid server name: dhcp-ddns

# keactrl reload -s dhcp_ddns
INFO/keactrl: Reloading kea-dhcp-ddns...

-- Sandro
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Re: [Kea-users] Including other config files

2022-06-14 Thread Sandro

On 14-06-2022 02:38, Jason Bailey wrote:


I apologize if this is a stupid question but how do I include other
configuration files into the main Kea config file?


https://kea.readthedocs.io/en/latest/arm/config.html#configuration-files-inclusion

Is that what you are looking for?

-- Sandro
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