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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">We’re running nova network flat (with some CERN specifics for legacy network integration). We’re looking at Neutron but migration
will require careful testing.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Tim<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Ben Hines [mailto:bhines@gmail.com]
<br>
<b>Sent:</b> 19 March 2015 09:18<br>
<b>To:</b> Tim Bell<br>
<b>Cc:</b> maishsk+openstack@maishsk.com; openstack-operators@lists.openstack.org<br>
<b>Subject:</b> Re: [Openstack-operators] Hypervisor decision<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Hey Tim,<o:p></o:p></p>
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<p class="MsoNormal">Which networking mode do you use with Hyper-V? We wanted to us it with nova-network HA mode but found it would not work with that configuration.
<br>
<br>
Neutron HA-DVR we are considering.<o:p></o:p></p>
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<p class="MsoNormal">-Ben<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Thu, Mar 19, 2015 at 12:59 AM, Tim Bell <<a href="mailto:Tim.Bell@cern.ch" target="_blank">Tim.Bell@cern.ch</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">We had a Hyper-V based environment previously so the migration to OpenStack was made easier by having
Hyper-V also in the cloud.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">We also find this avoids a set of driver issues and gives us a single vendor stack when we are reporting
problems.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">It’s good to make sure we keep the correct architecture that the hypervisor is not ‘hardcoded’ into
the infrastructure.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Downside is some additional packaging work but Puppet looks after most of the configuration. In addition,
we currently only have volumes with ceph on the KVM base since there is no ceph driver for Windows</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">We’ve around 200 Hyper-V hypervisors but the majority (about 3,200) are on KVM.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Tim</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Maish
Saidel-Keesing [mailto:<a href="mailto:maishsk@maishsk.com" target="_blank">maishsk@maishsk.com</a>]
<br>
<b>Sent:</b> 19 March 2015 08:19<br>
<b>To:</b> <a href="mailto:openstack-operators@lists.openstack.org" target="_blank">
openstack-operators@lists.openstack.org</a></span><o:p></o:p></p>
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<p class="MsoNormal"><br>
<b>Subject:</b> Re: [Openstack-operators] Hypervisor decision<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">That is interesting Tim.<br>
<br>
Why Hyper-V if I may ask? Why not stick just with KVM?<br>
<br>
Maish<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On 19/03/15 08:22, Tim Bell wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">At CERN, we run KVM and Hyper-V. Both work fine.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Depending on the size of your cluster, you may have other factors to consider such as monitoring and
configuration management. We use Puppet to configure both environnments.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Images are tagged with a property hypervisor_type which is used to schedule workloads to the appropriate
hypervisor.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Tim</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> matt
[<a href="mailto:matt@nycresistor.com" target="_blank">mailto:matt@nycresistor.com</a>]
<br>
<b>Sent:</b> 18 March 2015 23:24<br>
<b>To:</b> Abel Lopez<br>
<b>Cc:</b> <a href="mailto:openstack-operators@lists.openstack.org" target="_blank">
openstack-operators@lists.openstack.org</a><br>
<b>Subject:</b> Re: [Openstack-operators] Hypervisor decision</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">most openstack environments at kvm, so if you want to stick with the herd, that's the way to go.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Wed, Mar 18, 2015 at 5:53 PM, Abel Lopez <<a href="mailto:alopgeek@gmail.com" target="_blank">alopgeek@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Interesting topic, since you're already running Hyper-v and ESX, I'm inferring that your workload is heavy on windows VMs.<br>
If you're doing majority windows, and minority linux, stick with hyper-v. The benchmarks I've read show that windows VMs run fastest on hyper-v VS all others.<br>
If you expect an even split, it might make sense to create Host Aggregates of various hypervisiors like hyper-v and KVM, and utilize extra-specs in the flavors and guest images to aid in scheduling, for example "Windows images launch on the hyper-v pool"<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><br>
> On Mar 18, 2015, at 2:41 PM, Vytenis Silgalis <<a href="mailto:vsilgalis@outlook.com" target="_blank">vsilgalis@outlook.com</a>> wrote:<br>
><br>
> Hello,<br>
><br>
> I'm looking to champion openstack at my company, we currently run both a small hyper-v cluster and 3 VMware clusters. However we are not married to any specific hypervisor. What I'm looking for is recommendations for which hypervisor we should look at
for our openstack environments and the pros/con's people have run into with the various hypervisors supported by openstack.<br>
><br>
><br>
> Thanks,<br>
> Vytenis<br>
> _______________________________________________<br>
> OpenStack-operators mailing list<br>
> <a href="mailto:OpenStack-operators@lists.openstack.org" target="_blank">OpenStack-operators@lists.openstack.org</a><br>
> <a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators" target="_blank">
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators</a><o:p></o:p></p>
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_______________________________________________<br>
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<a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators</a><o:p></o:p></p>
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<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>OpenStack-operators mailing list<o:p></o:p></pre>
<pre><a href="mailto:OpenStack-operators@lists.openstack.org" target="_blank">OpenStack-operators@lists.openstack.org</a><o:p></o:p></pre>
<pre><a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators</a><o:p></o:p></pre>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">--
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Best Regards, Maish Saidel-Keesing<o:p></o:p></p>
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_______________________________________________<br>
OpenStack-operators mailing list<br>
<a href="mailto:OpenStack-operators@lists.openstack.org">OpenStack-operators@lists.openstack.org</a><br>
<a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators</a><o:p></o:p></p>
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