2:49 p.m.
Hey All,
Would like to ensure that if a DHCP server issues an IP, that it also
checks the FreeIPA (DNS) to ensure that IP hasn't been defined before.
Anyway to do that?
Currently if a virtual host has been offline for a while, the DHCP
serves it's IP to new hosts being built.
--
Cheers,
Tom K.
-------------------------------------------------------------------------------------
Living on earth is expensive, but it includes a free trip around the sun.
4:29 p.m.
New subject: DHCP + FreeIPA: How to ensure DHCP only servers those IP's NOT defined in FreeIPA DNS?
Either specify static allocations in your DHCP server, or set the IPs
statically on the nodes from outside the dynamic range, or just enable
DDNS updates in SSSD and it should update your DNS records to match
whatever IP the node gets at boot.
On 4/2/19 7:49 am, TomK via FreeIPA-users wrote:
> Hey All,
>
> Would like to ensure that if a DHCP server issues an IP, that it also
> checks the FreeIPA (DNS) to ensure that IP hasn't been defined before.
>
> Anyway to do that?
>
> Currently if a virtual host has been offline for a while, the DHCP
> serves it's IP to new hosts being built.
>
8:09 p.m.
New subject: DHCP + FreeIPA: How to ensure DHCP only servers those IP's NOT defined in FreeIPA DNS?
On 2/3/2019 5:29 PM, Peter Fern via FreeIPA-users wrote:
Either specify static allocations in your DHCP server, or set the IPs
statically on the nodes from outside the dynamic range, or just enable
DDNS updates in SSSD and it should update your DNS records to match
whatever IP the node gets at boot.
1) Will try static allocations.
2) Set IP's statically: Not an option for me. Need them taken from a
pool but more intelligently then DHCP has been doing.
3) DDNS updates would conflict with ipa-client registering the same
machine I think. Correct me if I'm wrong here.
4) I've already scripted pulling the IP from DHCP using dhclient,
checking IPA against reverse lookup then assigning it if it's free. So
I'll adjust it in such a way that it will skip calling dhclient, and do
the DNS checks and basic ping / nmap checks to see if it's free. Was
hoping to get DHCP configured to check DNS to leverage the capabilities
of both tools.
Cheers,
TK
On 4/2/19 7:49 am, TomK via FreeIPA-users wrote:
> Hey All,
>
> Would like to ensure that if a DHCP server issues an IP, that it also
> checks the FreeIPA (DNS) to ensure that IP hasn't been defined before.
>
> Anyway to do that?
>
> Currently if a virtual host has been offline for a while, the DHCP
> serves it's IP to new hosts being built.
>
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--
Cheers,
Tom K.
-------------------------------------------------------------------------------------
Living on earth is expensive, but it includes a free trip around the sun.
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freeipa-users@lists.fedorahosted.org
2 comments
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participants (2)
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Peter Fern -
TomK