177 lines
9.1 KiB
XML
177 lines
9.1 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<section 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"
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version="5.0"
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xml:id="xenapi-install">
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<title xml:id="xenapi-install.title">Install XenServer and
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XCP</title>
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<para>Before you can run OpenStack with XCP or XenServer, you must
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install the software on <link
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xlink:href="http://docs.vmd.citrix.com/XenServer/6.0.0/1.0/en_gb/installation.html#sys_requirements"
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>an appropriate server</link>.</para>
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<note>
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<para>Xen is a type 1 hypervisor: When your server starts, Xen
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is the first software that runs. Consequently, you must
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install XenServer or XCP before you install the operating
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system where you want to run OpenStack code. The OpenStack
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services then run in a virtual machine that you install on
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top of XenServer.</para>
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</note>
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<para>Before you can install your system, decide whether to
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install a free or paid edition of Citrix XenServer or Xen
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Cloud Platform from Xen.org. Download the software from these
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locations:</para>
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<itemizedlist>
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<listitem>
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<para><link
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xlink:href="http://www.citrix.com/XenServer/download"
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>http://www.citrix.com/XenServer/download</link></para>
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</listitem>
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<listitem>
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<para><link
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xlink:href="http://www.xen.org/download/xcp/index.html"
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>http://www.xen.org/download/xcp/index.html</link></para>
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</listitem>
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</itemizedlist>
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<para>When you install many servers, you might find it easier to
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perform <link
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xlink:href="http://docs.vmd.citrix.com/XenServer/6.0.0/1.0/en_gb/installation.html#pxe_boot_install"
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>PXE boot installations of XenServer or XCP</link>. You
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can also package any post-installation changes that you want
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to make to your XenServer by <link
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xlink:href="http://docs.vmd.citrix.com/XenServer/6.0.0/1.0/en_gb/supplemental_pack_ddk.html"
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>creating your own XenServer supplemental
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pack</link>.</para>
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<para>You can also install the <package>xcp-xenapi</package>
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package on Debian-based distributions to get XCP. However,
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this is not as mature or feature complete as above
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distributions. This modifies your boot loader to first boot
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Xen and boot your existing OS on top of Xen as Dom0. The xapi
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daemon runs in Dom0. Find more details at <link
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xlink:href="http://wiki.xen.org/wiki/Project_Kronos"
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>http://wiki.xen.org/wiki/Project_Kronos</link>.</para>
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<important>
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<para>Make sure you use the EXT type of storage repository
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(SR). Features that require access to VHD files (such as
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copy on write, snapshot and migration) do not work when
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you use the LVM SR. Storage repository (SR) is a
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XenAPI-specific term relating to the physical storage
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where virtual disks are stored.</para>
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<para>On the XenServer/XCP installation screen, choose the
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<guilabel>XenDesktop Optimized</guilabel> option. If
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you use an answer file, make sure you use
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<literal>srtype="ext"</literal> in the
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<option>installation</option> tag of the answer
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file.</para>
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</important>
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<section xml:id="xenapi-post-install">
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<title>Post-installation steps</title>
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<para>Complete these steps to install OpenStack in your
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XenServer system:</para>
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<procedure>
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<step>
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<para>For resize and migrate functionality, complete
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the changes described in the <citetitle>Configure
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resize</citetitle> section in the <link
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xlink:href="http://docs.openstack.org/trunk/config-reference/content/"
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><citetitle>OpenStack Configuration
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Reference</citetitle></link>.</para>
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</step>
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<step>
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<para>Install the VIF isolation rules to help prevent
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mac and IP address spoofing.</para>
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</step>
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<step>
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<para>Install the XenAPI plug-ins. See the following
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section.</para>
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</step>
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<step>
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<para>To support AMI type images, you must set up
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<literal>/boot/guest</literal>
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symlink/directory in Dom0. For detailed
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instructions, see next section.</para>
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</step>
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<step>
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<para>To support resize/migration, set up an ssh trust
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relation between your XenServer hosts, and ensure
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<literal>/images</literal> is properly set up.
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See next section for more details.</para>
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</step>
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<step>
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<para>Create a Paravirtualized virtual machine that
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can run the OpenStack compute code.</para>
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</step>
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<step>
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<para>Install and configure the <systemitem
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class="service">nova-compute</systemitem> in
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the above virtual machine.</para>
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</step>
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</procedure>
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<para>For more information, see how DevStack performs the last
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three steps for developer deployments. For more
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information about DevStack, see <citetitle>Getting Started
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With XenServer and Devstack</citetitle> (<link
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xlink:href="https://github.com/openstack-dev/devstack/blob/master/tools/xen/README.md"
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>https://github.com/openstack-dev/devstack/blob/master/tools/xen/README.md</link>).
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Find more information about the first step, see
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<citetitle>Multi Tenancy Networking Protections in
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XenServer</citetitle> (<link
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xlink:href="https://github.com/openstack/nova/blob/master/plugins/xenserver/doc/networking.rst"
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>https://github.com/openstack/nova/blob/master/plugins/xenserver/doc/networking.rst</link>).
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For information about how to install the XenAPI plug-ins,
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see <citetitle>XenAPI README</citetitle> (<link
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xlink:href="https://github.com/openstack/nova/blob/master/plugins/xenserver/xenapi/README"
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>https://github.com/openstack/nova/blob/master/plugins/xenserver/xenapi/README</link>).</para>
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<xi:include href="section_xapi-install-plugins.xml"/>
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<xi:include href="section_xapi-ami-setup.xml"/>
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<xi:include href="section_xapi-resize-setup.xml"/>
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</section>
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<section xml:id="xenapi-boot-from-iso">
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<title>Xen boot from ISO</title>
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<para>XenServer, through the XenAPI integration with
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OpenStack, provides a feature to boot instances from an
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ISO file. To activate the Boot From ISO feature, you must
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configure the SR elements on XenServer host, as
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follows:</para>
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<procedure>
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<step>
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<para>Create an ISO-typed SR, such as an NFS ISO
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library, for instance. For this, using XenCenter
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is a simple method. You must export an NFS volume
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from a remote NFS server. Make sure it is exported
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in read-write mode.</para>
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</step>
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<step>
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<para>On the compute host, find and record the uuid of
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this ISO SR:</para>
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<screen><prompt>#</prompt> <userinput>xe host-list</userinput></screen>
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</step>
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<step>
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<para>Locate the uuid of the NFS ISO library:</para>
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<screen><prompt>#</prompt> <userinput>xe sr-list content-type=iso</userinput></screen>
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</step>
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<step>
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<para>Set the uuid and configuration. Even if an NFS
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mount point is not local, you must specify
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<literal>local-storage-iso</literal>.</para>
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<screen><prompt>#</prompt> <userinput>xe sr-param-set uuid=[iso sr uuid] other-config:i18n-key=local-storage-iso</userinput></screen>
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</step>
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<step>
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<para>Make sure the host-uuid from <literal>xe
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pbd-list</literal> equals the uuid of the host
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you found previously:</para>
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<screen><prompt>#</prompt> <userinput>xe sr-uuid=[iso sr uuid]</userinput></screen>
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</step>
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<step>
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<para>You can now add images through the OpenStack
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Image Service with
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<literal>disk-format=iso</literal>, and boot
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them in OpenStack Compute:</para>
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<screen><prompt>$</prompt> <userinput>glance image-create --name=fedora_iso --disk-format=iso --container-format=bare < Fedora-16-x86_64-netinst.iso</userinput></screen>
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</step>
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</procedure>
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</section>
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</section>
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