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<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""> Antoni Segura Puimedon [mailto:toni+openstackml@midokura.com]
<br>
<b>Sent:</b> May-25-16 6:55 AM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions); Gal Sagie; openstack-operators<br>
<b>Subject:</b> Re: [openstack-dev] [kuryr][magnum]Installing kuryr for mutlinode openstack setup<o:p></o:p></span></p>
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<p class="MsoNormal">On Wed, May 25, 2016 at 11:20 AM, Jaume Devesa <<a href="mailto:devvesa@gmail.com" target="_blank">devvesa@gmail.com</a>> wrote:<o:p></o:p></p>
<p class="MsoNormal">Hello Akshay,<br>
<br>
responses inline:<br>
<br>
On Wed, 25 May 2016 10:48, Akshay Kumar Sanghai wrote:<br>
> Hi,<br>
> I have a 4 node openstack setup (1 controller, 1 network, 2 compute nodes).<br>
> I want to install kuryr in liberty version. I cannot find a package in<br>
> ubuntu repo.<br>
<br>
There is not yet official version of Kuryr. You'll need to install using the<br>
current master branch of the repo[1] (by cloning it, install dependencies and<br>
`python setup.py install`<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
Or you could run it dockerized. Read the "repo info" in [2]<o:p></o:p></p>
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<p class="MsoNormal">We are working on having the packaging ready, but we are splitting the repos first,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">so it will take a while for plain distro packages.<o:p></o:p></p>
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> -How do i install kuryr?<br>
If the README.rst file of the repository is not enough for you in terms of<br>
installation and configuration, please let us know what's not clear.<br>
<br>
> - what are the components that need to be installed on the respective<br>
> nodes?<br>
<br>
You need to run the kuryr libnetwork's service in all the nodes that you use as<br>
docker 'workers'<o:p></o:p></p>
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<p class="MsoNormal">and your chosen vendor's neutron agents. For example, for MidoNet it's<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">midolman, for ovs it would be the neutron ovs agent.<o:p></o:p></p>
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<br>
> - Do i need to install magnum for docker swarm?<br>
<br>
Not familiar with Magnum.. Can not help you here.<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal">If you want to run docker swarm in bare metal, you do not need Magnum. Only<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">keystone and Neutron.<o:p></o:p></p>
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<p class="MsoNormal">You'd put docker swarm, neutron and keystone running in one node, and then<o:p></o:p></p>
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<p class="MsoNormal">have N nodes with docker engine, kuryr/libnetwork and the neutron agents of<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">the vendor of your choice.<o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">[Hongbin Lu] Yes, Magnum is optional if you prefer to install swarm/k8s/mesos manually or by other tools. What Magnum offers
is basically an automation of deployment plus a few management operations (i.e. scaling the cluster at runtime). From my point of view, if you prefer to skip Magnum, the main disadvantage is the missing of ability to get a tenant-scoped swarm/k8s/mesos cluster
on-demand. In such case, you might have a static k8s/swarm/mesos cluster that is shared across multiple tenants.</span></i></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
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> - Can i use docker swarm, kubernetes, mesos in openstack without using<br>
> kuryr?<o:p></o:p></p>
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<p class="MsoNormal">You can use swarm and kubernetes in OpenStack with Kuryr using Magnum. It will<o:p></o:p></p>
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<p class="MsoNormal">use neutron networking for providing nets to the VMs that will run the swarm/kubernetes<o:p></o:p></p>
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<p class="MsoNormal">cluster. Inside the VMs, another overlay done by flannel will be used (in k8s, in<o:p></o:p></p>
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<p class="MsoNormal">swarm I have not tried it).<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"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">[Hongbin Lu] Yes, I think Flannel is an alternative of Kuryr. If using Magnum, Flannel is supported in k8s and swarm. Magnum supports 3 Flannel backends:
udp, vxlan, and host-gw. If you want an overlay solution, you can choose udp or vxlan. If you want a high-performance solution, the host-gw backend should work well.</span></i></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal">What will be the disadvantages?<o:p></o:p></p>
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<p class="MsoNormal">The disadvantages are that you do not get explicit Neutron networking for your containers,<o:p></o:p></p>
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<p class="MsoNormal">you get less networking isolation for your VMs/containers and if you want the highest<o:p></o:p></p>
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<p class="MsoNormal">performance, you have to change the default flannel mode.<span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">[Hongbin Lu] That is true. If using Magnum, the default flannel backend is “udp”. Users need to turn on the “host-gw” backend to get the highest performance.
We are discussing if it makes sense to change the default to “host-gw”, so that users will get the non-overlay performance by default. In addition, Magnum team is working with Kuryr team to bring Kuryr as the second network driver. For the comparison between
Flannel and Kuryr, I think the main disadvantage of Flannel is not about performance (because the flannel host-gw backend should provide a similar performance as Kuryr), but is the ability to tightly integrate containers with Neutron.</span></i></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
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<o:p></o:p></p>
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Only docker swarm right now. The kubernetes one will be addressed soon.<br>
<br>
><br>
> Thanks<br>
> Akshay<o:p></o:p></p>
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<p class="MsoNormal">Thanks to you for giving it a try!<br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal">> __________________________________________________________________________<br>
> OpenStack Development Mailing List (not for usage questions)<br>
> Unsubscribe: <a href="http://OpenStack-dev-request@lists.openstack.org?subject:unsubscribe" target="_blank">
OpenStack-dev-request@lists.openstack.org?subject:unsubscribe</a><br>
> <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><br>
<br>
There are a bunch of people much more experienced than me in Kuryr. I hope I<br>
haven't said anything stupid.<br>
<br>
Best regards,<br>
<br>
[1]: <a href="http://github.com/openstack/kuryr" target="_blank">http://github.com/openstack/kuryr</a><o:p></o:p></p>
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<p class="MsoNormal"> [2] <a href="https://hub.docker.com/r/kuryr/libnetwork/" target="_blank">
https://hub.docker.com/r/kuryr/libnetwork/</a><o:p></o:p></p>
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<span style="color:#888888"><br>
--<br>
Jaume Devesa<br>
Software Engineer at Midokura<br>
PGP key: 35C2D6B2 @ <a href="http://keyserver.ubuntu.com" target="_blank">keyserver.ubuntu.com</a><br>
</span><br>
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