openstack-manuals/doc/config-reference/source/compute/hypervisor-basics.rst
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Hypervisor configuration basics
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The node where the ``nova-compute`` service is installed and
operates on the same node that runs all of the virtual machines.
This is referred to as the compute node in this guide.
By default, the selected hypervisor is KVM. To change to another
hypervisor, change the ``virt_type`` option in the ``[libvirt]``
section of ``nova.conf`` and restart the ``nova-compute`` service.
Here are the general ``nova.conf`` options that are used to
configure the compute node's hypervisor: :ref:`nova-hypervisor`
Specific options for particular hypervisors can be found in
the following sections.