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<p class="MsoNormal"><span style="color:#1F497D">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><br>
I think that the most common use case is using a pool with multiple vip services (ex: 1.1.1.1:80 and 1.1.1.1:443)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">In the proposed model, if we have the same group of nodes participating in multiple say services on port 80 and 443, we need to specify two vips (since we did not separate between the IP address and the port)
and will need to create two pools.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I would expect us to be able to reuse the pool.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">What am I missing?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> -Sam.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Youcef Laribi [mailto:Youcef.Laribi@eu.citrix.com]
<br>
<b>Sent:</b> Friday, December 07, 2012 10:20 PM<br>
<b>To:</b> OpenStack Development Mailing List<br>
<b>Subject:</b> Re: [openstack-dev] </span><span lang="ZH-CN" style="font-size:10.0pt;font-family:"SimSun","serif"">答复</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">: [Quantum][LBaaS] vip_id in pool creation API<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Hi Sam,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">We discussed all of this before and at the last Summit at length
</span><span style="font-family:Wingdings;color:#1F497D">J</span><span style="color:#1F497D"> Just like Quantum resources, we model all resources as top resources regardless of the arity of their relationship to each other. This also allows extensions can add
more pools to a VIP (e.g. for L7 LB).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Youcef<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Samuel Bercovici [<a href="mailto:SamuelB@Radware.com">mailto:SamuelB@Radware.com</a>]
<br>
<b>Sent:</b> Friday, December 07, 2012 12:07 PM<br>
<b>To:</b> OpenStack Development Mailing List; Youcef Laribi<br>
<b>Subject:</b> RE: [openstack-dev] </span><span lang="ZH-CN" style="font-size:10.0pt;font-family:"SimSun","serif"">答复</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">: [Quantum][LBaaS] vip_id in pool creation API<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">If vips and pools have 1:1 relationships, why do we need pools as first citizens?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> -Sam.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Leon Cui [<a href="mailto:lcui@vmware.com">mailto:lcui@vmware.com</a>]
<br>
<b>Sent:</b> Friday, December 07, 2012 2:25 AM<br>
<b>To:</b> 'Youcef Laribi'<br>
<b>Cc:</b> <a href="mailto:openstack-dev@lists.openstack.org">openstack-dev@lists.openstack.org</a><br>
<b>Subject:</b> [openstack-dev] </span><span lang="ZH-CN" style="font-size:10.0pt;font-family:"SimSun","serif"">答复</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">: [Quantum][LBaaS] vip_id in pool creation API<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#003300">Sounds good. Thanks Youcef.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#003300"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:#003300">Thanks<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:#003300">Leon<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="ZH-CN" style="font-size:10.0pt;font-family:"SimSun","serif"">发件人</span></b><b><span style="font-size:10.0pt;font-family:"SimSun","serif"">:</span></b><span style="font-size:10.0pt;font-family:"SimSun","serif""> Youcef Laribi
[<a href="mailto:Youcef.Laribi@eu.citrix.com">mailto:Youcef.Laribi@eu.citrix.com</a>]
<br>
<b><span lang="ZH-CN">发送时间</span>:</b> 2012<span lang="ZH-CN">年</span>12<span lang="ZH-CN">月</span>6<span lang="ZH-CN">日</span> 15:30<br>
<b><span lang="ZH-CN">收件人</span>:</b> Leon Cui<br>
<b><span lang="ZH-CN">抄送</span>:</b> <a href="mailto:openstack-dev@lists.openstack.org">
openstack-dev@lists.openstack.org</a><br>
<b><span lang="ZH-CN">主题</span>:</b> RE: [Quantum][LBaaS] vip_id in pool creation API<o:p></o:p></span></p>
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</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Hi Leon,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I’m assuming that when someone creates a pool and mentions a vip_id, we automatically also update the vip object with the new pool_id (to keep them in sync). But you are right, it’s simpler to have it read-only
in the pool, and allow update only from the vip object. I’ll change the spec accordingly. I will also add the restriction that a pool can only be used in a vip if it is not already used by another vip (ie. Pools cannot be shared between vips, it’s 1:1).
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Youcef <o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="color:#1F497D">
</span></a><span style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Leon Cui [<a href="mailto:lcui@vmware.com">mailto:lcui@vmware.com</a>]
<br>
<b>Sent:</b> Thursday, December 6, 2012 3:12 PM<br>
<b>To:</b> Youcef Laribi<br>
<b>Cc:</b> <a href="mailto:openstack-dev@lists.openstack.org">openstack-dev@lists.openstack.org</a><br>
<b>Subject:</b> </span><span lang="ZH-CN" style="font-size:10.0pt;font-family:"SimSun","serif"">答复</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">: [Quantum][LBaaS] vip_id in pool creation API<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#993366">Hi Youcef,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#993366">That’s exactly what I suggest that don’t place a “vip_id” inside pool creation payload. In this way, “vip_id” is a ready-only property in pool and we can avoid the case that you mentioned.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#993366">Currently API spec said that “vip_id” could be provided during pool creation (POST) call. It potentially allows someone to create a pool to be associated with a VIP which still think is associated with another
pool.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#993366"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#993366">Correct me if my statement is wrong. thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#993366"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="color:#993366">Thanks<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:#993366">Leon<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="ZH-CN" style="font-size:10.0pt;font-family:"SimSun","serif"">发件人</span></b><b><span style="font-size:10.0pt;font-family:"SimSun","serif"">:</span></b><span style="font-size:10.0pt;font-family:"SimSun","serif""> Youcef Laribi
[<a href="mailto:Youcef.Laribi@eu.citrix.com">mailto:Youcef.Laribi@eu.citrix.com</a>]
<br>
<b><span lang="ZH-CN">发送时间</span>:</b> 2012<span lang="ZH-CN">年</span>12<span lang="ZH-CN">月</span>5<span lang="ZH-CN">日</span> 11:56<br>
<b><span lang="ZH-CN">收件人</span>:</b> Leon Cui<br>
<b><span lang="ZH-CN">抄送</span>:</b> <a href="mailto:openstack-dev@lists.openstack.org">
openstack-dev@lists.openstack.org</a><br>
<b><span lang="ZH-CN">主题</span>:</b> RE: [Quantum][LBaaS] vip_id in pool creation API<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Hi Leon,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">The reason the spec said this is to ensure that the information in the VIP (which pool_id is used by the VIP) and the information in the pool (to which VIP the pool belongs, if it belongs to one), never get out-of-sync.
If we allowed separate updates, then someone can update the pool to be associated with a new VIP, but the old VIP still thinks the pool is associated with it.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Youcef<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Leon Cui [<a href="mailto:lcui@vmware.com">mailto:lcui@vmware.com</a>]
<br>
<b>Sent:</b> Wednesday, December 5, 2012 10:24 AM<br>
<b>To:</b> Youcef Laribi<br>
<b>Cc:</b> <a href="mailto:openstack-dev@lists.openstack.org">openstack-dev@lists.openstack.org</a><br>
<b>Subject:</b> [Quantum][LBaaS] vip_id in pool creation API<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi Youcef,<o:p></o:p></p>
<p class="MsoNormal">In Create_Pool API, the spec says “Optionally, you can also assign the pool to a vip during creation time, by specifying the vip_id attribute.”. I don’t think we should allow user to do it because it means that it will modify the “pool_id”
of a VIP in an implicitly way. I suggest that don’t allow user to provide vip_id during pool creation api. User can always to update the VIP by given a different pool_id.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What do you think?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal">Leon<o:p></o:p></p>
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