===========================
Compatibility and Stability
===========================

.. _cephadm-compatibility-with-podman:

Compatibility with Podman Versions
----------------------------------

Podman and Ceph have different end-of-life strategies. This means that care
must be taken in finding a version of Podman that is compatible with Ceph.

These versions are expected to work:


+-----------+---------------------------------------+
|  Ceph     |                 Podman                |
+-----------+-------+-------+-------+-------+-------+
|           | 1.9   |  2.0  |  2.1  |  2.2  |  3.0  |
+===========+=======+=======+=======+=======+=======+
| <= 15.2.5 | True  | False | False | False | False |
+-----------+-------+-------+-------+-------+-------+
| >= 15.2.6 | True  | True  | True  | False | False |
+-----------+-------+-------+-------+-------+-------+
| >= 16.2.1 | False | True  | True  | False | True  |
+-----------+-------+-------+-------+-------+-------+

.. warning:: 

   To use Podman with Ceph Pacific, you must use **a version of Podman that
   is 2.0.0 or higher**. However, **Podman version 2.2.1 does not work with
   Ceph Pacific**.
   
   "Kubic stable" is known to work with Ceph Pacific, but it must be run
   with a newer kernel.


.. _cephadm-stability:

Stability
---------

Cephadm is under development. Some functionality is incomplete. Be aware
that some of the components of Ceph may not work perfectly with cephadm.
These include:

- RGW

Cephadm support remains under development for the following features:

- Ingress
- Cephadm exporter daemon
- cephfs-mirror

If a cephadm command fails or a service stops running properly, see
:ref:`cephadm-pause` for instructions on how to pause the Ceph cluster's
background activity and how to disable cephadm.