101 lines
5.2 KiB
XML
101 lines
5.2 KiB
XML
<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="section_compute-hypervisors">
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<title>Hypervisors</title>
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<para>OpenStack Compute supports many hypervisors, which might
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make it difficult for you to choose one. Most installations
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use only one hypervisor. However, you can use <xref
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linkend="computefilter"/> and <xref
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linkend="imagepropertiesfilter"/> to schedule different
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hypervisors within the same installation. The following links
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help you choose a hypervisor. See <link
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xlink:href="http://wiki.openstack.org/HypervisorSupportMatrix"
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>http://wiki.openstack.org/HypervisorSupportMatrix</link>
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for a detailed list of features and support across the
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hypervisors.</para>
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<para>The following hypervisors are supported:</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.linux-kvm.org/page/Main_Page"
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>KVM</link> - Kernel-based Virtual Machine. The
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virtual disk formats that it supports is inherited from
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QEMU since it uses a modified QEMU program to launch
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the virtual machine. The supported formats include raw
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images, the qcow2, and VMware formats.</para>
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</listitem>
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<listitem>
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<para><link xlink:href="http://lxc.sourceforge.net/"
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>LXC</link> - Linux Containers (through libvirt),
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use to run Linux-based virtual machines.</para>
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</listitem>
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<listitem>
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<para><link xlink:href="http://wiki.qemu.org/Manual"
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>QEMU</link> - Quick EMUlator, generally only used
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for development purposes.</para>
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</listitem>
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<listitem>
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<para><link
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xlink:href="http://user-mode-linux.sourceforge.net/"
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>UML</link> - User Mode Linux, generally only used
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for development purposes.</para>
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</listitem>
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<listitem>
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<para><link xlink:href="http://www.vmware.com/products/vsphere-hypervisor/support.html"
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>VMware vSphere</link> 4.1 update 1 and newer, runs VMware-based Linux and
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Windows images through a connection with a vCenter server or directly with an ESXi
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host.</para>
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</listitem>
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<listitem>
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<para><link xlink:href="http://www.xen.org">Xen</link> -
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XenServer, Xen Cloud Platform (XCP), use to run Linux
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or Windows virtual machines. You must install the
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<systemitem class="service"
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>nova-compute</systemitem> service in a
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para-virtualized VM.</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.microsoft.com/en-us/server-cloud/windows-server/server-virtualization-features.aspx"
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> Hyper-V</link> - Server virtualization with
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Microsoft's Hyper-V, use to run Windows, Linux, and
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FreeBSD virtual machines. Runs <systemitem
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class="service">nova-compute</systemitem> natively
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on the Windows virtualization platform.</para>
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</listitem>
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<listitem>
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<para><link
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xlink:href="https://wiki.openstack.org/wiki/Baremetal"
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> Bare Metal</link> - Not a hypervisor in the
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traditional sense, this driver provisions physical
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hardware through pluggable sub-drivers (for example, PXE for image
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deployment, and IPMI for power management).</para>
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</listitem>
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</itemizedlist>
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<section xml:id="hypervisor-configuration-basics">
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<title>Hypervisor configuration basics</title>
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<para>The node where the <systemitem class="service"
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>nova-compute</systemitem> service is installed and
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operates on the same node that runs all of the virtual machines.
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This is referred to as the compute node in this guide.</para>
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<para>By default, the selected hypervisor is KVM. To change to another hypervisor, change
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the <literal>virt_type</literal> option in the <literal>[libvirt]</literal> section of
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<filename>nova.conf</filename> and restart the <systemitem class="service"
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>nova-compute</systemitem> service.</para>
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<para>Here are the general <filename>nova.conf</filename>
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options that are used to configure the compute node's
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hypervisor: <xref linkend="config_table_nova_hypervisor"/>.</para>
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<para>Specific options for particular hypervisors
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can be found in the following sections.</para>
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</section>
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<xi:include href="section_hypervisor_kvm.xml"/>
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<xi:include href="section_hypervisor_qemu.xml"/>
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<xi:include href="section_introduction-to-xen.xml"/>
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<xi:include href="section_hypervisor_lxc.xml"/>
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<xi:include href="section_hypervisor_vmware.xml"/>
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<xi:include href="section_hypervisor_hyper-v.xml"/>
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<xi:include href="section_hypervisor_baremetal.xml"/>
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</section>
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