035382e5a1
* Update nova-network section based on latest information * Add a section on Nova V3 API * tweak ironic section * add a section on Python SDK projec Change-Id: Iad3a86db616d0c879c1e34c8960fc997e3632843
513 lines
27 KiB
XML
513 lines
27 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE appendix [
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<!-- Some useful entities borrowed from HTML -->
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<!ENTITY ndash "–">
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<!ENTITY mdash "—">
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<!ENTITY hellip "…">
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<!ENTITY plusmn "±">
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]>
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<appendix xmlns="http://docbook.org/ns/docbook"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0"
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xml:id="working-with-roadmaps" label="C">
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<title>Working with Roadmaps</title>
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<para>The good news: OpenStack has unprecedented transparency when it comes
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to providing information about what's coming up. The bad news: each release
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moves very quickly. The purpose of this chapter/section is to highlight some of
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the useful pages to track, and take an educated guess at what is coming up in
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the Icehouse release and perhaps further afield.</para>
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<para>OpenStack follows a six month release cycle, typically
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releasing in April/May and October/November each year. At the start of
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each cycle, the community gathers in a single location for
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a Design Summit. At the summit, the features for the
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coming releases are discussed, prioritized and planned.
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Here's an example release cycle with dates showing
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milestone releases, code freeze, and string freeze dates
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along with an example of when the Summit occurs.
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Milestones are interim releases within the cycle that are
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available as packages for download and testing. Code
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freeze is putting a stop to adding new features to the
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release. String freeze is putting a stop to changing any
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strings within the source code.</para>
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<informalfigure>
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<mediaobject>
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<imageobject>
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<imagedata width="5in"
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fileref="figures/releasecyclegrizzlydiagram.png"
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/>
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</imageobject>
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</mediaobject>
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</informalfigure>
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<?hard-pagebreak?>
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<section xml:id="roadmap-information-available">
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<title>Information Available to You</title>
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<para>There are several good sources of information available
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that you can use to track your OpenStack development desires.</para>
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<para>Release notes are maintained on the OpenStack
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wiki:</para>
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<informaltable rules="all" cellpadding="2" cellspacing="0">
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<thead>
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<tr>
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<th>Series</th>
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<th>Status</th>
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<th>Releases</th>
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<th>Date</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><para>Icehouse</para></td>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/Icehouse_Release_Schedule"
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>Under development, Release
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schedule</link>
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</para></td>
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<td><para>Due</para></td>
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<td><para>Apr 17, 2013</para></td>
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</tr>
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<tr>
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<td rowspan="2"><para>Havana</para></td>
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<td rowspan="2"><para>
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Current stable release, security-supported
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</para></td>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/Havana"
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>2013.2</link>
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</para></td>
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<td><para>Apr 4, 2013</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2013.2.1"
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>2013.2.1</link>
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</para></td>
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<td><para>Dec 16, 2013</para></td>
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</tr>
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<tr>
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<td rowspan="5"><para>Grizzly</para></td>
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<td rowspan="5"><para>Security-supported</para></td>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/Grizzly"
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>2013.1</link>
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</para></td>
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<td><para>Apr 4, 2013</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2013.1.1"
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>2013.1.1</link>
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</para></td>
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<td><para>May 9, 2013</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2013.1.2"
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>2013.1.2</link>
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</para></td>
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<td><para>Jun 6, 2013</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2013.1.3"
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>2013.1.3</link>
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</para></td>
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<td><para>Aug 8, 2013</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2013.1.4"
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>2013.1.4</link>
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</para></td>
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<td><para>Oct 17, 2013</para></td>
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</tr>
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<tr>
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<td rowspan="5"><para>Folsom</para></td>
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<td rowspan="5"><para>Community-supported</para></td>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/Folsom"
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>2012.2</link>
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</para></td>
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<td><para>Sep 27, 2012</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2012.2.1"
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>2012.2.1</link>
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</para></td>
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<td><para>Nov 29, 2012</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2012.2.2"
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>2012.2.2</link>
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</para></td>
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<td><para>Dec 13, 2012</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2012.2.3"
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>2012.2.3</link>
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</para></td>
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<td><para>Jan 31, 2013</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2012.2.4"
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>2012.2.4</link>
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</para></td>
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<td><para>Apr 11, 2013</para></td>
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</tr>
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<tr>
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<td rowspan="4"><para>Essex</para></td>
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<td rowspan="4"><para>Community-supported</para></td>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/Essex"
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>2012.1</link>
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</para></td>
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<td><para>Apr 5, 2012</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2012.1.1"
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>2012.1.1</link>
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</para></td>
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<td><para>Jun 22, 2012</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2012.1.2"
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>2012.1.2</link>
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</para></td>
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<td><para>Aug 10, 2012</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2012.1.3"
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>2012.1.3</link>
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</para></td>
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<td><para>Oct 12, 2012</para></td>
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</tr>
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<tr>
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<td rowspan="2"><para>Diablo</para></td>
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<td rowspan="2"
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><para>Deprecated</para></td>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/Diablo"
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>2011.3</link>
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</para></td>
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<td><para>Sep 22, 2011</para></td>
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</tr>
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<tr>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/2011.3.1"
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>2011.3.1</link>
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</para></td>
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<td><para>Jan 19, 2012</para></td>
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</tr>
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<tr>
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<td><para>Cactus</para></td>
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<td><para>Deprecated</para></td>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/Cactus"
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>2011.2</link>
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</para></td>
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<td><para>Apr 15, 2011</para></td>
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</tr>
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<tr>
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<td><para>Bexar</para></td>
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<td><para>Deprecated</para></td>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/Bexar"
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>2011.1</link>
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</para></td>
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<td><para>Feb 3, 2011</para></td>
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</tr>
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<tr>
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<td><para>Austin</para></td>
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<td><para>Deprecated</para></td>
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<td><para>
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<link
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xlink:href="https://wiki.openstack.org/wiki/ReleaseNotes/Austin"
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>2010.1</link>
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</para></td>
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<td><para>Oct 21, 2010</para></td>
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</tr>
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</tbody>
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</informaltable>
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<itemizedlist>
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<listitem><para><link xlink:href="http://status.openstack.org/release">A breakdown of
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current features under development, with their target milestone.</link></para></listitem>
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<listitem><para><link xlink:href="http://blueprints.launchpad.net/openstack">A list of
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all features, including those not yet under development</link></para></listitem>
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<listitem><para><link xlink:href="https://wiki.openstack.org/wiki/Summit/Icehouse/Etherpads">
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Rough-draft design discussions ("etherpads"), from the last design summit</link></para></listitem>
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<listitem><para><link xlink:href="http://review.openstack.org">List of individual code
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changes under review</link></para></listitem>
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</itemizedlist>
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</section>
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<section xml:id="roadmap-influencing">
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<title>Influencing the Roadmap</title>
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<para>OpenStack truly welcomes your ideas (and contributions),
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and highly values feedback from real-world users of the software.
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By learning a little about the process that drives feature
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development, you can participate and perhaps get the additions
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you desire.</para>
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<para>Feature requests typically start their life in Etherpad,
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a collaborative editing tool, which is used to take
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coordinating notes at a design summit session specific to
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the feature. This then leads to the creation of a
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blueprint on the Launchpad site for the particular
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project, which is used to describe the feature more
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formally. Blueprints are then approved by project team
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members, and development can begin.</para>
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<para>Therefore, the fastest way to get your feature request
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up for consideration is to create an Etherpad with your
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ideas and propose a session to the design summit. If the
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design summit has already passed, you may also create a
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blueprint directly. Read this <link
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xlink:href="http://vmartinezdelacruz.com/how-to-work-with-blueprints-without-losing-your-mind/"
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>blog post about how to work with
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blueprints</link> (http://vmartinezdelacruz.com/how-to-work-with-blueprints-without-losing-your-mind/)
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for a developer intern's perspective, Victoria
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Martínez.</para>
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<para>The roadmap for the next release as it is developed can
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be seen at <link
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xlink:href="http://status.openstack.org/release/"
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>Releases</link>
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(http://status.openstack.org/release/).</para>
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<para>To determine the potential features going in to future
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releases, or to look at features implemented previously,
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take a look at the existing blueprints such as <link
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xlink:href="https://blueprints.launchpad.net/nova"
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>OpenStack Compute (nova) Blueprints</link>
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(https://blueprints.launchpad.net/nova), <link
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xlink:href="https://blueprints.launchpad.net/keystone"
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>OpenStack Identity (keystone) Blueprints</link>
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(https://blueprints.launchpad.net/keystone) and release
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notes.
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</para>
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<para>Aside from direct-to-blueprint pathway, there is another very
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well-regarded mechanism to influence the development roadmap: the
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user survey. Found at <link xlink:href="http://openstack.org/user-survey">
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http://openstack.org/user-survey</link>, it allows you to provide
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details of your deployments and needs, anonymously by default.
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Each cycle, the user committee analyzes the results and produces a
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report, including providing specific information to the technical
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committee and technical leads of the projects.</para>
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</section>
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<section xml:id="aspects-to-watch">
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<title>Aspects to watch</title>
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<para>You want to keep an eye on these areas improving within
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OpenStack. The best ways to "watch" roadmaps for each
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project is to look at the blueprints that are being
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approved for work on milestone releases. You can also
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learn from PTL webinars that follow the OpenStack
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Summits twice a year.</para>
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<section xml:id="roadmap-driver-improvements">
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<title>Driver quality improvements</title>
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<para>A major quality push has occurred across drivers
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and plugins in Block Storage, Compute and
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Networking. Particularly, developers of Compute
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and Networking drivers that require proprietary
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or hardware products are now required to provide
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an automated external testing system for use
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during the development process.</para>
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</section>
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<section xml:id="roadmap-easier-upgrades">
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<title>Easier Upgrades</title>
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<para>One of the most requested features since OpenStack began (for components other
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than Object Storage, which tends to "just work"): easier upgrades. From Grizzly
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onward (and significantly improved in Havana) internal messaging communication is
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versioned, meaning services can theoretically drop back to backward-compatible
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behaviour. This allows you to run later versions of some components, while keeping
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older versions of others.</para>
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<para>In addition, a lot of focus has been placed on database migrations. These are now
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better managed, including the use of the Turbo Hipster tool during development -
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which tests database migration performance on copies of real-world user
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databases.</para>
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<para>These changes have facilitated the first proper OpenStack upgrade guide, found in
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<xref linkend="ch_ops_upgrades"/>, and will continue to improve in
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Icehouse.</para>
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</section>
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<section xml:id="nova-network-deprecation">
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<title>Deprecation of Nova Network</title>
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<para>With the introduction of the full software defined
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networking stack provided by OpenStack
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Networking (Neutron) in the Folsom release,
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development effort on the initial networking
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code that remains part of the compute component
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has gradually reduced. While many still use
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nova-network in production, there has been a
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long term plan to remove the code in favour of
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the more flexible and full-featured OpenStack
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Networking.</para>
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<para>An attempt was made to deprecate nova-network
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during the Havana release, which was aborted due
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to the lack of equivalent functionality (such as
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the FlatDHCP multi_host High Availability mode
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mentioned in this guide), lack of a migration
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path between versions, insufficient testing and
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simplicity when used for the more
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straightforward use cases nova-network
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traditionally supported. Though significant
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effort has been made to address these concerns,
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nova-network will not be deprecated in the
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Icehouse release. In addition, the Program
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Technical Lead of the Compute project has
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indicated that to a limited degree, patches to
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nova-network will now again begin to be
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accepted.</para>
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<para>This leaves you with an important point of
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decision when designing your cloud. OpenStack
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Networking is robust enough to use with a small
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number of limitations (IPv6 support, performance
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issues in some scenarios),
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and provides many more features than
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nova-network. However, if you do not have the
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more complex use cases that can benefit from
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fuller software defined networking capabilities,
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or are uncomfortable with the new concepts
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introduced, nova-network may continue to be a
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viable option for the next 12 to 18 months.</para>
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<para>Similarly, if you have an existing cloud and are
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looking to upgrade from nova-network to
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OpenStack Networking, you should have the option
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to delay the upgrade for this period of time.
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However, each release of OpenStack brings
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significant new innovation, and regardless of
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your usage of networking methodology it is
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likely best to begin planning for an upgrade
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within a reasonable time frame of each release.</para>
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<para>As mentioned, there's currently no way to cleanly migrate from
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nova-network to Neutron. We recommend that you keep a migration
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in mind and what that process might involve for when a proper
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migration path is released. If you must upgrade, please be aware
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both service and instance downtime is likely unavoidable.</para>
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</section>
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</section>
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<section xml:id="roadmap-ML2">
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<title>Replacement of Open vSwitch plugin with Modular Layer
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2</title>
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<para>The Modular Layer 2 plugin is a framework allowing
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OpenStack Networking to simultaneously utilize the
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variety of layer 2 networking technologies found in
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complex real-world data centers. It currently works with
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the existing Open vSwitch, Linux Bridge, and Hyper-V L2
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||
agents, and is intended to replace and deprecate the
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||
monolithic plugins associated with those L2
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agents.</para>
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||
</section>
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<section xml:id="roadmap-nova-v3-api">
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<title>Compute V3 API</title>
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<para>The 3rd version of the Compute API will be released in
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||
experimental status with Icehouse. Though the V2 API will
|
||
remain for two-to-three releases, this is the best time to
|
||
evaluate the new API and provide comments while it can be more
|
||
easily changed. Of particular note is the decision that the V3
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API will not support XML messages - being JSON only. This was
|
||
based on the poor testing of existing XML responses in the V2
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||
API, and lack of effort to continue to develop and maintain an
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entire second response type. Feedback on this and any such
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||
change is welcome by responding to the <link xlink:href="https://www.openstack.org/user-survey/">user survey</link>.</para>
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||
</section>
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<section xml:id="roadmap-triple-o">
|
||
<title>OpenStack on OpenStack (TripleO)</title>
|
||
<para>Continues to improve and you may consider using it for greenfield
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deployments.</para>
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||
</section>
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<section xml:id="roadmap-savana">
|
||
<title>Hadoop-as-a-Service (Savana)</title>
|
||
<para>A much-requested answer to Big Data problems, a dedicated
|
||
team has been making solid progress on a
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Hadoop-as-a-Service project.</para>
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||
</section>
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<section xml:id="roadmap-baremetal">
|
||
<title>Bare-metal deployment (Ironic)</title>
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<para>Though Bare-metal deployment has been widely lauded, and
|
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development continues, the project to replace Compute's bare-metal
|
||
driver will likely not graduate in Icehouse. A particular blueprint to
|
||
follow is <link xlink:href="https://blueprints.launchpad.net/ironic/+spec/migration-from-nova">
|
||
Migration path from Nova's BM driver</link>, which tracks the ability
|
||
to move to the new project from an existing bare metal deployment.</para>
|
||
</section>
|
||
<section xml:id="roadmap-trove">
|
||
<title>Database as a Service (Trove)</title>
|
||
<para>The OpenStack community has had a database-as-a-service
|
||
tool in development for some time, and we will finally
|
||
see the first integrated release of it in Icehouse.
|
||
Initially, it will only support MySQL, with further
|
||
options available in Juno onwards, but it should be able
|
||
to deploy database servers out-of-the-box in a highly
|
||
available way from this release.</para>
|
||
</section>
|
||
<section xml:id="roadmap-marconi">
|
||
<title>Messaging as a Service (Marconi)</title>
|
||
<para>A service to provide queues of messages and notifications
|
||
has entered 'incubation', meaning if the next two
|
||
development cycles are successful, it will be released
|
||
in Juno.</para>
|
||
</section>
|
||
<section xml:id="roadmap-scheduling">
|
||
<title>Scheduler Improvements</title>
|
||
<para>Both Compute and Block Storage rely on schedulers to
|
||
determine where to place virtual machines or volumes.
|
||
While in Havana the Compute scheduler underwent
|
||
significant improvement, in Icehouse the scheduler in
|
||
Block Storage is slated for a boost. Further down the
|
||
track, an effort started this cycle which aims to create
|
||
a holistic scheduler covering both, will come to
|
||
fruition.</para>
|
||
<section xml:id="roadmap-volumes">
|
||
<title>Block Storage Improvements</title>
|
||
<para>The team discussed many areas of work at the Icehouse summit
|
||
including volume migration support, Ceph integration, and access
|
||
control for volumes.</para>
|
||
</section>
|
||
<section xml:id="roadmap-python-sdk">
|
||
<title>Toward a 'proper' Python SDK</title>
|
||
<para>Though many successfully use the various python-*client code as
|
||
an effective SDK for interacting with OpenStack, consistency between
|
||
the projects and documentation availability waxes and wanes. To combat
|
||
this, an <link xlink:href="https://wiki.openstack.org/wiki/PythonOpenStackSDK">effort to
|
||
improve the experience</link> has started. Cross-project development
|
||
efforts in OpenStack have a checkered history, such as the
|
||
<link xlink:href="https://wiki.openstack.org/wiki/OpenStackClient">
|
||
unified client project</link> having several false starts. However,
|
||
the early signs for the SDK project are promising and we expect to see
|
||
results during the Juno cycle.</para>
|
||
</section>
|
||
</section>
|
||
</appendix>
|