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Support Matrix
==============
Supported Operating Systems
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Kolla Ansible supports the following host Operating Systems (OS):
.. note::
CentOS 7 is no longer supported as a host OS. The Train release supports
both CentOS 7 and 8, and provides a route for migration. See the `Kolla
Ansible Train documentation
<https://docs.openstack.org/kolla-ansible/train/user/centos8.html>`_ for
information on migrating to CentOS 8.
* CentOS 8
* Debian Buster (10)
* RHEL 8
Supported container images
~~~~~~~~~~~~~~~~~~~~~~~~~~
For best results, the base container image distribution should match the host
OS distribution. The following values are supported for ``kolla_base_distro``:
* ``centos``
* ``debian``
* ``rhel``
* ``ubuntu``
For details of which images are supported on which distributions, see the
:kolla-doc:`Kolla support matrix <support_matrix>`.