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Import the following files from the former config-reference [1]: api.rst cells.rst fibre-channel.rst hypervisor-basics.rst hypervisor-hyper-v.rst hypervisor-kvm.rst hypervisor-lxc.rst hypervisor-qemu.rst hypervisor-virtuozzo.rst hypervisor-vmware.rst hypervisor-xen-api.rst hypervisor-xen-libvirt.rst hypervisors.rst index.rst iscsi-offload.rst logs.rst resize.rst samples/api-paste.ini.rst samples/index.rst samples/policy.yaml.rst samples/rootwrap.conf.rst schedulers.rst The below files are skipped as they're already included, in slightly different forms, in the nova documentation. config-options.rst nova-conf-samples.rst nova-conf.rst nova.conf Part of bp: doc-migration Change-Id: I145e38149bf20a5e068f8cfe913f90c7ebeaad36
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======================
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LXC (Linux containers)
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======================
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LXC (also known as Linux containers) is a virtualization technology that works
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at the operating system level. This is different from hardware virtualization,
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the approach used by other hypervisors such as KVM, Xen, and VMware. LXC (as
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currently implemented using libvirt in the Compute service) is not a secure
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virtualization technology for multi-tenant environments (specifically,
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containers may affect resource quotas for other containers hosted on the same
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machine). Additional containment technologies, such as AppArmor, may be used to
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provide better isolation between containers, although this is not the case by
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default. For all these reasons, the choice of this virtualization technology
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is not recommended in production.
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If your compute hosts do not have hardware support for virtualization, LXC will
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likely provide better performance than QEMU. In addition, if your guests must
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access specialized hardware, such as GPUs, this might be easier to achieve with
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LXC than other hypervisors.
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.. note::
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Some OpenStack Compute features might be missing when running with LXC as
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the hypervisor. See the `hypervisor support matrix
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<http://wiki.openstack.org/HypervisorSupportMatrix>`_ for details.
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To enable LXC, ensure the following options are set in ``/etc/nova/nova.conf``
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on all hosts running the ``nova-compute`` service.
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.. code-block:: ini
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compute_driver = libvirt.LibvirtDriver
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[libvirt]
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virt_type = lxc
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On Ubuntu, enable LXC support in OpenStack by installing the
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``nova-compute-lxc`` package.
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