b417259465
Partial-Bug: #1250515 author: diane fleming Change-Id: I92c9ad25ee5bbd2c9334c4860637faa1b358718b backport: havana
79 lines
3.9 KiB
XML
79 lines
3.9 KiB
XML
<section xml:id="section_compute-configure-xen"
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xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:ns5="http://www.w3.org/1999/xhtml"
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xmlns:ns4="http://www.w3.org/2000/svg"
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xmlns:ns3="http://www.w3.org/1998/Math/MathML"
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xmlns:ns="http://docbook.org/ns/docbook"
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version="5.0">
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<title>Xen configuration reference</title>
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<para>The following section discusses some commonly changed options in XenServer.
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The table below provides a complete reference of all
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configuration options available for configuring Xen with
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OpenStack.</para>
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<para>The recommended way to use Xen with OpenStack is through the
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XenAPI driver. To enable the XenAPI driver, add the following
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configuration options <filename>/etc/nova/nova.conf</filename>
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and restart the <systemitem class="service">nova-compute</systemitem> service:</para>
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<programlisting language="ini">compute_driver=xenapi.XenAPIDriver
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xenapi_connection_url=http://your_xenapi_management_ip_address
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xenapi_connection_username=root
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xenapi_connection_password=your_password</programlisting>
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<para>These connection details are used by the OpenStack Compute
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service to contact your hypervisor and are the same details
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you use to connect XenCenter, the XenServer management
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console, to your XenServer or XCP box.</para>
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<note><para>
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The <literal>xenapi_connection_url</literal> is generally the management
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network IP address of the XenServer. Though it is possible to use the
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internal network IP Address (169.250.0.1) to contact XenAPI, this does not
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allow live migration between hosts, and other functionalities like host aggregates
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do not work.
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</para></note>
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<para>It is possible to manage Xen using libvirt, though this is not
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well-tested or supported.
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To experiment using Xen through libvirt add the following
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configuration options
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<filename>/etc/nova/nova.conf</filename>:
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<programlisting language="ini">compute_driver=libvirt.LibvirtDriver
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libvirt_type=xen</programlisting></para>
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<section xml:id="xen-agent">
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<title>Agent</title>
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<para>
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If you don't have the guest agent on your VMs, it takes a long time for nova to decide the VM has successfully started.
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Generally a large timeout is required for Windows instances, bug you may want to tweak <literal>agent_version_timeout</literal>
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</para></section>
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<section xml:id="xen-firewall">
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<title>Firewall</title>
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<para>
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If using nova-network, IPTables is supported:
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<programlisting language="ini">firewall_driver=nova.virt.firewall.IptablesFirewallDriver</programlisting>
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Alternately, doing the isolation in Dom0:
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<programlisting language="ini">firewall_driver=nova.virt.xenapi.firewall.Dom0IptablesFirewallDriver</programlisting>
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</para></section>
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<section xml:id="xen-vnc">
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<title>VNC proxy address</title>
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<para>
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Assuming you are talking to XenAPI through the host local management network,
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and XenServer is on the address: 169.254.0.1, you can use the following:
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<literal>vncserver_proxyclient_address=169.254.0.1</literal>
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</para></section>
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<section xml:id="xen-storage">
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<title>Storage</title>
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<para>
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You can specify which Storage Repository to use with nova by looking at the
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following flag. The default is to use the local-storage setup by the default installer:
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<programlisting language="ini">sr_matching_filter="other-config:i18n-key=local-storage"</programlisting>
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Another good alternative is to use the "default" storage (for example
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if you have attached NFS or any other shared storage):
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<programlisting language="ini">sr_matching_filter="default-sr:true"</programlisting>
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<note><para>To use a XenServer pool, you must create the pool
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by using the Host Aggregates feature.</para></note>
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</para></section>
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<section xml:id="xen-config-reference-table">
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<title>Xen configuration reference</title>
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<xi:include href="../../common/tables/nova-xen.xml"/>
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</section>
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</section>
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