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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi Christian,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">For a more general solution you might want to look at the code that supports passing in “—availabilty_zone=az:host” (look for forced_host in compute/api.py).
Currently this is limited to admin, but I think that should be changed to be a specific action that can be controlled by policy (we have a change in preparation for this).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Phil<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> openstack-bounces+philip.day=hp.com@lists.launchpad.net [mailto:openstack-bounces+philip.day=hp.com@lists.launchpad.net]
<b>On Behalf Of </b>GMI M<br>
<b>Sent:</b> 16 October 2012 15:13<br>
<b>To:</b> Christian Parpart<br>
<b>Cc:</b> <openstack@lists.launchpad.net><br>
<b>Subject:</b> Re: [Openstack] looking for a Nova scheduler filter plugin to boot nodes on named hosts<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Hi Christian,<br>
<br>
I think you might be able to use the existing filters in Essex.<br>
For example, you can add the following lines in the nova.conf of the controller host (or where nova-scheduler runs) and restart nova-scheduler:<br>
<br>
isolated_hosts="nova7"<br>
isolated_images="sadsd1e35dfe63"<br>
<br>
This will allow you to run the image with ID "sadsd1e35dfe63" only on the compute host "nova7".<br>
You can also pass a list of compute servers in the isolated_hosts, if you have the need.<br>
<br>
I certainly see the use-case for this feature, for example when you want to run Windows based instances and you don't want to buy a Windows datacenter license for each nova-compute host, but only for a few that will run Windows instances.<br>
<br>
I hope this helps you.<br>
<br>
<br>
<br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal">On Mon, Oct 15, 2012 at 7:45 PM, Christian Parpart <<a href="mailto:trapni@gmail.com" target="_blank">trapni@gmail.com</a>> wrote:<o:p></o:p></p>
<p class="MsoNormal">Hi all,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I am looking for a (Essex) Nova scheduler plugin that parses the scheduler_hints to get a hostname of the<o:p></o:p></p>
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<p class="MsoNormal">hypervisor to spawn the actual VM on, rejecting any other node.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">This allows us to explicitely spawn a VM on a certain host (yes, there are really usecases where you want that). :-)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I was trying to build my own and searching around since I couldn't believe I was the only one, but didn't find one yet.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Does anyone of you maybe have the skills to actually write that simple plugin, or even maybe knows where such<o:p></o:p></p>
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<p class="MsoNormal">a plugin has already been developed?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Many thanks in advance,<o:p></o:p></p>
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<p class="MsoNormal">Christian Parpart.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
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