67 lines
2.6 KiB
XML
67 lines
2.6 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<section xmlns="http://docbook.org/ns/docbook"
|
|
xmlns:xi="http://www.w3.org/2001/XInclude"
|
|
xmlns:xlink="http://www.w3.org/1999/xlink"
|
|
version="5.0"
|
|
xml:id="desktop-as-a-service">
|
|
<?dbhtml stop-chunking?>
|
|
<title>Desktop-as-a-Service</title>
|
|
<para>Virtual Desktop Infrastructure (VDI) is a service that hosts
|
|
user desktop environments on remote servers. This application
|
|
is very sensitive to network latency and requires a high
|
|
performance compute environment. Traditionally these types of
|
|
services do not use cloud environments because
|
|
few clouds support such a demanding workload for user-facing
|
|
applications. As cloud environments become more robust,
|
|
vendors are starting to provide services
|
|
that provide virtual desktops in the cloud. OpenStack
|
|
may soon provide the infrastructure for these types of
|
|
deployments.</para>
|
|
<section xml:id="challenges">
|
|
<title>Challenges</title>
|
|
<para>Designing an infrastructure that is suitable to host virtual
|
|
desktops is a very different task to that of most virtual
|
|
workloads. For example, the design must consider:</para>
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para>Boot storms, when a high volume of logins occur
|
|
in a short period of time</para>
|
|
</listitem>
|
|
<listitem>
|
|
<para>The performance of the applications running on
|
|
virtual desktops</para>
|
|
</listitem>
|
|
<listitem>
|
|
<para>Operating systems and their compatibility with the
|
|
OpenStack hypervisor</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
</section>
|
|
<section xml:id="broker">
|
|
<title>Broker</title>
|
|
<para>The connection broker is a central component of the
|
|
architecture that determines which remote desktop host the user
|
|
connects to. The broker is often a
|
|
full-blown management product enabling the automated
|
|
deployment and provisioning of remote desktop hosts.</para>
|
|
</section>
|
|
<section xml:id="possible-solutions">
|
|
<title>Possible solutions</title>
|
|
<para>
|
|
There are a number of commercial products currently available that
|
|
provide such a broker solution but nothing that is native to
|
|
the OpenStack project. Not providing a broker is also
|
|
an option, but managing this manually would not suffice for a
|
|
large scale, enterprise solution.
|
|
</para>
|
|
</section>
|
|
<section xml:id="diagram">
|
|
<title>Diagram</title>
|
|
<mediaobject>
|
|
<imageobject>
|
|
<imagedata fileref="../figures/Specialized_VDI1.png"/>
|
|
</imageobject>
|
|
</mediaobject>
|
|
</section>
|
|
</section>
|