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===========
Hypervisors
===========
.. toctree::
:maxdepth: 1
hypervisor-kvm
hypervisor-qemu
hypervisor-lxc
hypervisor-vmware
hypervisor-virtuozzo
hypervisor-zvm
hypervisor-ironic
OpenStack Compute supports many hypervisors, which might make it difficult for
you to choose one. Most installations use only one hypervisor. However, you
can use :ref:`ComputeFilter` and :ref:`ImagePropertiesFilter` to schedule
different hypervisors within the same installation. The following links help
you choose a hypervisor. See :doc:`/user/support-matrix` for a detailed list
of features and support across the hypervisors.
The following hypervisors are supported:
* `KVM`_ - Kernel-based Virtual Machine. The virtual disk formats that it
supports is inherited from QEMU since it uses a modified QEMU program to
launch the virtual machine. The supported formats include raw images, the
qcow2, and VMware formats.
* `LXC`_ - Linux Containers (through libvirt), used to run Linux-based virtual
machines.
* `QEMU`_ - Quick EMUlator, generally only used for development purposes.
* `VMware vSphere`_ 5.1.0 and newer - Runs VMware-based Linux and Windows
images through a connection with a vCenter server.
* `Virtuozzo`_ 7.0.0 and newer - OS Containers and Kernel-based Virtual
Machines supported. The supported formats include ploop and qcow2 images.
* `zVM`_ - Server virtualization on z Systems and IBM LinuxONE, it can run Linux,
z/OS and more.
* `Ironic`_ - OpenStack project which provisions bare metal (as opposed to virtual)
machines.
Nova supports hypervisors via virt drivers. Nova has the following in tree
virt drivers:
* :oslo.config:option:`compute_driver` = ``libvirt.LibvirtDriver``
This driver runs on Linux and supports multiple hypervisor backends, which
can be configured via the :oslo.config:option:`libvirt.virt_type` config
option.
* :oslo.config:option:`compute_driver` = ``ironic.IronicDriver``
* :oslo.config:option:`compute_driver` = ``vmwareapi.VMwareVCDriver``
* :oslo.config:option:`compute_driver` = ``zvm.ZVMDriver``
* :oslo.config:option:`compute_driver` = ``fake.FakeDriver``
This driver does not spawn any virtual machines and therefore should only be
used during testing.
.. _KVM: https://www.linux-kvm.org/page/Main_Page
.. _LXC: https://linuxcontainers.org
.. _QEMU: https://wiki.qemu.org/Manual
.. _VMware vSphere: https://www.vmware.com/support/vsphere-hypervisor.html
.. _Virtuozzo: https://www.virtuozzo.com/products/vz7.html
.. _zVM: https://www.ibm.com/it-infrastructure/z/zvm
.. _Ironic: https://docs.openstack.org/ironic/latest/
|
