The dhcp agent now is able to use network namespaces so there is no longer ip conflicts. Perhaps in the future the dhcp agent could implement some kind of DHCP reply (ip helper) service . Though currently it allocates an ip address in each subnet that you want dhcp enabled on. <div>
<br><div>Aaron<br><br><div class="gmail_quote">On Mon, Aug 13, 2012 at 12:02 AM, Hua ZZ Zhang <span dir="ltr"><<a href="mailto:zhuadl@cn.ibm.com" target="_blank">zhuadl@cn.ibm.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<p><font face="sans-serif">hi,</font><br>
<br>
<font face="sans-serif">I have a question about the ip address consumed by the dhcp services. is it necessary to assign an individual ip for each dhcp daemon? can we reserve only one ip address for all dhcp deamons subject to one subnet since they won't run on the same host? since the dhcp service only need to communicate with local VM instances and local dhcp agent (don't know if it is true for this assumption), can we find a kind of isolation mechanism to avoid ip conflicts and extra consume of ip addresses to implement this feature? </font><br>
<font face="sans-serif"><br>
</font><font size="1" face="serif"><b>Best Regards, </b></font><font size="1" face="serif"><br>
<br>
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Emerging Technology Institute(ETI)<br>
IBM China Software Development Lab<br>
e-mail: <a href="mailto:zhuadl@cn.ibm.com" target="_blank">zhuadl@cn.ibm.com</a><br>
Notes ID: Hua ZZ Zhang/China/IBM<br>
Tel: 86-10-82450483</font></ul>
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<ul style="padding-left:0pt"><font size="1" face="serif">地址:北京市海淀区东北旺西路8号 中关村软件园28号楼 环宇大厦3层 邮编：100193<br>
Address: 3F Ring, Building 28 Zhongguancun Software Park, 8 Dongbeiwang West Road, Haidian District, Beijing, P.R.C.100193</font></ul>
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<img width="16" height="16" src="cid:3__=C7BBF0CADFB278698f9e8a93df938@cn.ibm.com" border="0" alt="Inactive hide details for MURAOKA Yusuke ---2012-08-09 00:21:52---Hi,"><font color="#424282" face="sans-serif">MURAOKA Yusuke ---2012-08-09 00:21:52---Hi,</font><br>
<br>
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<ul style="padding-left:72pt"><font size="1" face="sans-serif"><b>MURAOKA Yusuke <<a href="mailto:yusuke@jbking.org" target="_blank">yusuke@jbking.org</a>></b></font><font size="1" face="sans-serif"> </font><br>
<font size="1" face="sans-serif">Sent by: openstack-bounces+zhuadl=<a href="mailto:cn.ibm.com@lists.launchpad.net" target="_blank">cn.ibm.com@lists.launchpad.net</a></font>
<p><font size="1" face="sans-serif">2012-08-09 00:19</font></p></ul>
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<div align="right"><font size="1" face="sans-serif">To</font></div></td><td width="100%"><img width="1" height="1" src="cid:2__=C7BBF0CADFB278698f9e8a93df938@cn.ibm.com" border="0" alt=""><br>
<ul style="padding-left:7pt"><font size="1" face="sans-serif">Dan Wendlandt <<a href="mailto:dan@nicira.com" target="_blank">dan@nicira.com</a>></font></ul>
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<div align="right"><font size="1" face="sans-serif">Subject</font></div></td><td width="100%"><img width="1" height="1" src="cid:2__=C7BBF0CADFB278698f9e8a93df938@cn.ibm.com" border="0" alt=""><br>
<ul style="padding-left:7pt"><font size="1" face="sans-serif">Re: [Openstack] [Netstack] [openstack-dev] [Quantum] Multi-host implementation</font></ul>
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<tt><font>Hi,<br>
<br>
I've updated the bp to correspond with current design spec. <br>
> </font></tt><tt><font><a href="https://blueprints.launchpad.net/quantum/+spec/quantum-multihost-dhcp" target="_blank">https://blueprints.launchpad.net/quantum/+spec/quantum-multihost-dhcp</a></font></tt><tt><font><br>
<br>
<br>
I'd know the case of failure, improper, insane, by that.<br>
Anyway, comments, discussions are welcome.<br>
<br>
Thanks.<br>
<br>
-- <br>
MURAOKA Yusuke<br>
<br>
Mail: <a href="mailto:yusuke@jbking.org" target="_blank">yusuke@jbking.org</a><br>
<br>
<br>
日付：2012年8月7日火曜日、時刻：2:47、差出人：Nachi Ueno：<br>
<br>
> Hi Dan<br>
> <br>
> Thank you for pointing this.<br>
> <br>
> Yusuke updated design spec.<br>
> </font></tt><tt><font><a href="https://blueprints.launchpad.net/quantum/+spec/quantum-multihost-dhcp" target="_blank">https://blueprints.launchpad.net/quantum/+spec/quantum-multihost-dhcp</a></font></tt><tt><font><br>
> <br>
> 2012/8/6 Dan Wendlandt <<a href="mailto:dan@nicira.com" target="_blank">dan@nicira.com</a> (</font></tt><tt><font><a href="mailto:dan@nicira.com" target="_blank">mailto:dan@nicira.com</a></font></tt><tt><font>)>:<br>
> > Hi Nachi,<br>
> > <br>
> > I've reviewed the code and added comments. I'd like to see at least a basic<br>
> > spec describing the proposed approach (need only be a couple paragraphs,<br>
> > perhaps with a diagram) linked to the blueprint so we can have a design<br>
> > discussion around it. Thanks,<br>
> > <br>
> > Dan<br>
> > <br>
> > <br>
> > On Fri, Aug 3, 2012 at 1:03 PM, Nachi Ueno <<a href="mailto:nachi@nttmcl.com" target="_blank">nachi@nttmcl.com</a> (</font></tt><tt><font><a href="mailto:nachi@nttmcl.com" target="_blank">mailto:nachi@nttmcl.com</a></font></tt><tt><font>)> wrote:<br>
> > > <br>
> > > Hi folks<br>
> > > <br>
> > > Sorry.<br>
> > > I added <a href="mailto:openstack-dev@lists.openstack.org" target="_blank">openstack-dev@lists.openstack.org</a> (</font></tt><tt><font><a href="mailto:openstack-dev@lists.openstack.org" target="_blank">mailto:openstack-dev@lists.openstack.org</a></font></tt><tt><font>) in this discussion.<br>
> > > <br>
> > > 2012/8/3 Nati Ueno <<a href="mailto:nati.ueno@gmail.com" target="_blank">nati.ueno@gmail.com</a> (</font></tt><tt><font><a href="mailto:nati.ueno@gmail.com" target="_blank">mailto:nati.ueno@gmail.com</a></font></tt><tt><font>)>:<br>
> > > > Hi folks<br>
> > > > <br>
> > > > > Gary<br>
> > > > Thank you for your comment. I wanna discuss your point on the mailing<br>
> > > > list.<br>
> > > > <br>
> > > > Yusuke pushed Multi-host implementation for review.<br>
> > > > </font></tt><tt><font><a href="https://review.openstack.org/#/c/10766/2" target="_blank">https://review.openstack.org/#/c/10766/2</a></font></tt><tt><font><br>
> > > > This patch changes only quantum-dhcp-agent side.<br>
> > > > <br>
> > > > Gary's point is we should have host attribute on the port for<br>
> > > > scheduling.<br>
> > > > I agree with Gary.<br>
> > > > <br>
> > > > In the nova, vm has available_zone for scheduling.<br>
> > > > So Instead of using host properties.<br>
> > > > How about use available_zone for port?<br>
> > > > <br>
> > > > Format of availability_zone is something like this<br>
> > > > available_zone="zone_name:host".<br>
> > > > <br>
> > > > We can also add availability_zone attribute for the network as a<br>
> > > > default value of port.<br>
> > > > We can write this until next Monday.<br>
> > > > However I'm not sure quantum community will accept this or not, so I'm<br>
> > > > asking here.<br>
> > > > <br>
> > > > If there are no objections, we will push zone version for review.<br>
> > > > Thanks<br>
> > > > Nachi<br>
> > > > <br>
> > > > _______________________________________________<br>
> > > > Mailing list: </font></tt><tt><font><a href="https://launchpad.net/~openstack" target="_blank">https://launchpad.net/~openstack</a></font></tt><tt><font><br>
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> > > > Unsubscribe : </font></tt><tt><font><a href="https://launchpad.net/~openstack" target="_blank">https://launchpad.net/~openstack</a></font></tt><tt><font><br>
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> > > <br>
> > > <br>
> > > <br>
> > > _______________________________________________<br>
> > > OpenStack-dev mailing list<br>
> > > <a href="mailto:OpenStack-dev@lists.openstack.org" target="_blank">OpenStack-dev@lists.openstack.org</a> (</font></tt><tt><font><a href="mailto:OpenStack-dev@lists.openstack.org" target="_blank">mailto:OpenStack-dev@lists.openstack.org</a></font></tt><tt><font>)<br>
> > > </font></tt><tt><font><a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev</a></font></tt><tt><font><br>
> > <br>
> > <br>
> > <br>
> > <br>
> > <br>
> > <br>
> > --<br>
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~<br>
> > Dan Wendlandt<br>
> > Nicira, Inc: </font></tt><tt><font><a href="http://www.nicira.com" target="_blank">www.nicira.com</a></font></tt><tt><font> (</font></tt><tt><font><a href="http://www.nicira.com" target="_blank">http://www.nicira.com</a></font></tt><tt><font>)<br>
> > twitter: danwendlandt<br>
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~<br>
> > <br>
> > <br>
> > --<br>
> > Mailing list: </font></tt><tt><font><a href="https://launchpad.net/~netstack" target="_blank">https://launchpad.net/~netstack</a></font></tt><tt><font><br>
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> <br>
> <br>
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