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[Vishvananda Ishaya <vishvananda@xxxxxxxxx>]

nova dhcp and dns architecture won't change. But I'm sure an alternate dhcp implementation could be done as a quantum l3 plugin. So that combined with moniker would likely be the path forward.

Vish

On Feb 19, 2013, at 12:18 PM, Ritesh Nanda <riteshnanda09@xxxxxxxxx> wrote:

> Thanks again vish
> 
> Do we have any roadmap to include a functinality for using ISC-dhcp and bind dns as default in openstack. As with the release of Bind 10 a lot of functionality would be getting change from how bind9 worked. Now ISC-dhcp would be saving lease files in database and lot more.
> Even moinmoin project running to provide DNSaas in openstack  that supports bind 9 at present would there be any future change in nova dhcp and dns architecture to the currently it has. 
> 
> On Wed, Feb 20, 2013 at 1:30 AM, Vishvananda Ishaya <vishvananda@xxxxxxxxx> wrote:
> No particular reason except that is what libvirt uses by default and it is easy to modify.
> 
> Vish
> 
> On Feb 19, 2013, at 11:51 AM, Diego Parrilla Santamaría <diego.parrilla.santamaria@xxxxxxxxx> wrote:
> 
>> Thanks Vish,
>> 
>> This is something I always forget to ask: I'm curious about the historical reasons for dnsmasq instead of ISC-DHCP managed with OMAPI, for example.
>> 
>> Cheers
>> Diego
>> 
>>  -- 
>> Diego Parrilla
>> CEO
>> www.stackops.com |  diego.parrilla@xxxxxxxxxxxx | +34 649 94 43 29 | skype:diegoparrilla
>> 
>> 
>> 
>> 
>> 
>> On Tue, Feb 19, 2013 at 8:37 PM, Vishvananda Ishaya <vishvananda@xxxxxxxxx> wrote:
>> You cannot have an external dhcp server with openstack. Openstack needs a way to know the ip address assigned to a vm to do its listing properly. If you don't care about the api returning valid ips there is a possibility of using FlatNetworking (not FlatDHCP) to make nova stick the network into a bridge and not do any dhcp at all. You could then have an external server serving up dhcp ips. I suspect you will probably have to disable security groups completely using NoopFirewallDriver driver to get this to work.
>> 
>> As to the reason dhcp-host is not working, I suspect is because we give dnsmasq an external hosts file so you probably would need the host directive there.
>> 
>> Vish
>> 
>> On Feb 19, 2013, at 4:44 AM, Ritesh Nanda <riteshnanda09@xxxxxxxxx> wrote:
>> 
>>> Hope Vish can answer this , what can be the way around to do this.
>>> 
>>> On Tue, Feb 19, 2013 at 2:01 PM, Razique Mahroua <razique.mahroua@xxxxxxxxx> wrote:
>>> Hi,
>>> I'm not sure the "dhcp-host" configuration option exists actually. As for having one another host in VLAN mode is something I'd be interested to know as well
>>> 
>>> Regards,
>>> 
>>> Razique Mahroua - Nuage & Co
>>> razique.mahroua@xxxxxxxxx
>>> Tel : +33 9 72 37 94 15
>>> 
>>> <NUAGECO-LOGO-Fblan_petit.jpg>
>>> 
>>> Le 19 févr. 2013 à 08:05, Ritesh Nanda <riteshnanda09@xxxxxxxxx> a écrit :
>>> 
>>>> Hello ,
>>>> 
>>>> Is it possible to use external dhcp server , instead of dnsmasq .
>>>> I am using openstack essex, with vlan manager as network,  I have a need where i need to implement dynamic dns, 
>>>> so using dhcp3 as dhcp-server and bind9 as dns is possible.
>>>> 
>>>> Or is there any way in openstack i can implement dynamic dns in openstack.
>>>> 
>>>> One more problem which i am facing , dnsmasq has a option to assign static ip to a particular hostname using dhcp-host
>>>> parameter in dnsmasq config file.
>>>> 
>>>> i tried it doing by defining  the config file of dnsmasq in nova.conf
>>>> 
>>>> --dnsmasq_config_file=/etc/nova/dnsmasq.conf
>>>> 
>>>> then in dnsmasq config file 
>>>> 
>>>> i gave options for a particular subnet.
>>>>  
>>>> 
>>>> dhcp-range=Tenant-operator,10.0.50.3,10.0.50.254,255.255.255.0,24h
>>>> dhcp-option=Tenant-operator,6,10.0.50.7
>>>> domain=operator.com,10.0.50.0/24,local
>>>> dhcp-host=importantmachine,10.0.50.120
>>>> 
>>>> these all options are working except dhcp-host.
>>>> 
>>>> Can anybody help me with this.
>>>> -- 
>>>>  With Regards  
>>>>  Ritesh Nanda
>>>> 
>>>> 
>>>> 
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>>> 
>>> 
>>> 
>>> 
>>> -- 
>>>  With Regards  
>>>  Ritesh Nanda
>>> 
>>> 
>>> 
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>> 
>> 
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>> 
> 
> 
> 
> 
> -- 
>  With Regards  
>  Ritesh Nanda
> 
> 
>