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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]
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<b>Sent:</b> June-13-16 3:22 AM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions)<br>
<b>Cc:</b> yanyanhu@cn.ibm.com; Qi Ming Teng; aditi.s@nectechnologies.in; sitlani.namrata@yahoo.in; flwang@catalyst.net.nz; Chandan Kumar; Sheel Rana Insaan; Yuanying<br>
<b>Subject:</b> Re: [openstack-dev] [Higgins][Zun] Project roadmap<o:p></o:p></span></p>
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<p class="MsoNormal">On Mon, Jun 13, 2016 at 12:10 AM, Hongbin Lu <<a href="mailto:hongbin.lu@huawei.com" target="_blank">hongbin.lu@huawei.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"><span style="color:#1F497D">Hi team,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">During the team meetings these weeks, we collaborated the initial project roadmap. I summarized it as below. Please review.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">* Implement a common container abstraction for different container runtimes. The initial implementation will focus on supporting basic container operations
(i.e. CRUD).</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">* Focus on non-nested containers use cases (running containers on physical hosts), and revisit nested containers use cases (running containers on VMs)
later. </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">* Provide two set of APIs to access containers: The Nova APIs and the Zun-native APIs. In particular, the Zun-native APIs will expose full container
capabilities, and Nova APIs will expose capabilities that are shared between containers and VMs.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">* Leverage Neutron (via Kuryr) for container networking.</span> <o:p></o:p></p>
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<p class="MsoNormal">Great! Let us know anytime we can help<br>
<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="color:#1F497D">* Leverage Cinder for container data volume.</span><o:p></o:p></p>
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<p class="MsoNormal">Have you considered fuxi?<br>
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<a href="https://github.com/openstack/fuxi">https://github.com/openstack/fuxi</a><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] We discussed if we should leverage Kuryr/Fuxi for storage, but we are unclear what this project offer exactly and how it works. The maturity
of the project is also a concern, but we will revisit it later.<o:p></o:p></span></i></b></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">* Leverage Glance for storing container images. If necessary, contribute to Glance for missing features (i.e. support layer of container images).</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">* Support enforcing multi-tenancy by doing the following:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">** Add configurable options for scheduler to enforce neighboring containers belonging to the same tenant.</span><o:p></o:p></p>
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<p class="MsoNormal">What about have the scheduler pluggable instead of having a lot of configuration options?<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] For short-term, no. We will implement a very simple scheduler to start. For long-term, we will wait for the scheduler-as-a-service project:
<a href="https://wiki.openstack.org/wiki/Gantt">https://wiki.openstack.org/wiki/Gantt</a> . I believe Gantt will have a pluggable architecture so that your requirement will be satisfied. If not, we will revisit it.<o:p></o:p></span></i></b></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">** Support hypervisor-based container runtimes.</span><o:p></o:p></p>
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<p class="MsoNormal">Is that hyper.sh?<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] It could be, or Clear Container, or something similar.<o:p></o:p></span></i></b></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">The following topics have been discussed, but the team cannot reach consensus on including them into the short-term project scope. We skipped them for
now and might revisit them later.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">* Support proxying API calls to COEs.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">* Advanced container operations (i.e. keep container alive, load balancer setup, rolling upgrade).</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">* Nested containers use cases (i.e. provision container hosts).</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">* Container composition (i.e. support docker-compose like DSL).</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Will it have ordering primitives, i.e. this container won't start until this one is up and running. ?<o:p></o:p></p>
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<p class="MsoNormal">I also wonder whether the Higgins container abstraction will have rich status reporting that can be used in ordering.<o:p></o:p></p>
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<p class="MsoNormal">For example, whether it can differentiate started containers from those that are already listening in their exposed<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">ports.<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] I am open to that, but needs to discuss the idea further.</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"> <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="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">NOTE: I might forgot and mis-understood something. Please feel free to point out if anything is wrong or missing.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">Best regards,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">Hongbin</span><o:p></o:p></p>
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