b327b961f6
In I29c5a678efec4fbc4bd7958ebe6d454ae30701cd we made the libvirt driver to run only on Linux. However we did not have documentation about what virt driver runs on what Operating System. This patch starts such documentation. Change-Id: Iccf4ab14865ac1694d7b0dad5dcb101f1ba152c8
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===========
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Hypervisors
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===========
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.. TODO: Add UML (User-Mode Linux) hypervisor to the following list when its
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dedicated documentation is ready.
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.. toctree::
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:maxdepth: 1
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hypervisor-basics
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hypervisor-kvm
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hypervisor-qemu
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hypervisor-xen-api
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hypervisor-xen-libvirt
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hypervisor-lxc
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hypervisor-vmware
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hypervisor-hyper-v
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hypervisor-virtuozzo
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hypervisor-powervm
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hypervisor-zvm
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hypervisor-ironic
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OpenStack Compute supports many hypervisors, which might make it difficult for
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you to choose one. Most installations use only one hypervisor. However, you
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can use :ref:`ComputeFilter` and :ref:`ImagePropertiesFilter` to schedule
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different hypervisors within the same installation. The following links help
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you choose a hypervisor. See :doc:`/user/support-matrix` for a detailed list
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of features and support across the hypervisors.
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The following hypervisors are supported:
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* `KVM`_ - Kernel-based Virtual Machine. The virtual disk formats that it
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supports is inherited from QEMU since it uses a modified QEMU program to
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launch the virtual machine. The supported formats include raw images, the
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qcow2, and VMware formats.
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* `LXC`_ - Linux Containers (through libvirt), used to run Linux-based virtual
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machines.
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* `QEMU`_ - Quick EMUlator, generally only used for development purposes.
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* `VMware vSphere`_ 5.1.0 and newer - Runs VMware-based Linux and Windows
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images through a connection with a vCenter server.
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* `Xen (using libvirt)`_ - Xen Project Hypervisor using libvirt as
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management interface into ``nova-compute`` to run Linux, Windows, FreeBSD and
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NetBSD virtual machines.
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* `XenServer`_ - XenServer, Xen Cloud Platform (XCP) and other XAPI based Xen
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variants runs Linux or Windows virtual machines. You must install the
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``nova-compute`` service in a para-virtualized VM.
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* `Hyper-V`_ - Server virtualization with Microsoft Hyper-V, use to run
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Windows, Linux, and FreeBSD virtual machines. Runs ``nova-compute`` natively
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on the Windows virtualization platform.
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* `Virtuozzo`_ 7.0.0 and newer - OS Containers and Kernel-based Virtual
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Machines supported via libvirt virt_type=parallels. The supported formats
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include ploop and qcow2 images.
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* `PowerVM`_ - Server virtualization with IBM PowerVM for AIX, IBM i, and Linux
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workloads on the Power Systems platform.
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* `zVM`_ - Server virtualization on z Systems and IBM LinuxONE, it can run Linux,
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z/OS and more.
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* `UML`_ - User-Mode Linux is a safe, secure way of running Linux versions and Linux
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processes.
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* `Ironic`_ - OpenStack project which provisions bare metal (as opposed to virtual)
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machines.
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Nova supports hypervisors via virt drivers. Nova has the following in tree
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virt drivers:
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* :oslo.config:option:`compute_driver` = ``libvirt.LibvirtDriver``
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This driver runs on Linux and supports multiple hypervisor backends, which
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can be configured via the :oslo.config:option:`libvirt.virt_type` config
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option.
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* :oslo.config:option:`compute_driver` = ``xenapi.XenAPIDriver``
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* :oslo.config:option:`compute_driver` = ``ironic.IronicDriver``
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* :oslo.config:option:`compute_driver` = ``vmwareapi.VMwareVCDriver``
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* :oslo.config:option:`compute_driver` = ``hyperv.HyperVDriver``
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* :oslo.config:option:`compute_driver` = ``powervm.PowerVMDriver``
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* :oslo.config:option:`compute_driver` = ``zvm.ZVMDriver``
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* :oslo.config:option:`compute_driver` = ``fake.FakeDriver``
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This driver does not spawn any virtual machines and therefore should only be
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used during testing.
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.. _KVM: https://www.linux-kvm.org/page/Main_Page
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.. _LXC: https://linuxcontainers.org
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.. _QEMU: https://wiki.qemu.org/Manual
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.. _VMware vSphere: https://www.vmware.com/support/vsphere-hypervisor.html
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.. _Xen (using libvirt): https://www.xenproject.org
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.. _XenServer: https://xenserver.org
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.. _Hyper-V: https://docs.microsoft.com/en-us/windows-server/virtualization/hyper-v/hyper-v-technology-overview
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.. _Virtuozzo: https://www.virtuozzo.com/products/vz7.html
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.. _PowerVM: https://www.ibm.com/us-en/marketplace/ibm-powervm
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.. _zVM: https://www.ibm.com/it-infrastructure/z/zvm
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.. _UML: http://user-mode-linux.sourceforge.net
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.. _Ironic: https://docs.openstack.org/ironic/latest/
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