+++ /dev/null
-====================
- OS Recommendations
-====================
-
-Ceph Dependencies
-=================
-
-As a general rule, we recommend deploying Ceph on newer releases of Linux.
-We also recommend deploying on releases with long-term support.
-
-Linux Kernel
-------------
-
-- **Ceph Kernel Client**
-
- If you are using the kernel client to map RBD block devices or mount
- CephFS, the general advice is to use a "stable" or "longterm
- maintenance" kernel series provided by either http://kernel.org or
- your Linux distribution on any client hosts.
-
- For RBD, if you choose to *track* long-term kernels, we currently recommend
- 4.x-based "longterm maintenance" kernel series:
-
- - 4.9.z
- - 4.4.z
-
- For CephFS, see `CephFS best practices`_ for kernel version guidance.
-
- Older kernel client versions may not support your `CRUSH tunables`_ profile
- or other newer features of the Ceph cluster, requiring the storage cluster
- to be configured with those features disabled.
-
-
-Platforms
-=========
-
-The charts below show how Ceph's requirements map onto various Linux
-platforms. Generally speaking, there is very little dependence on
-specific distributions aside from the kernel and system initialization
-package (i.e., sysvinit, upstart, systemd).
-
-Luminous (12.2.z)
------------------
-
-+----------+----------+--------------------+--------------+---------+------------+
-| Distro | Release | Code Name | Kernel | Notes | Testing |
-+==========+==========+====================+==============+=========+============+
-| CentOS | 7 | N/A | linux-3.10.0 | 3 | B, I, C |
-+----------+----------+--------------------+--------------+---------+------------+
-| Debian | 8.0 | Jessie | linux-3.16.0 | 1, 2 | B, I |
-+----------+----------+--------------------+--------------+---------+------------+
-| Debian | 9.0 | Stretch | linux-4.9 | 1, 2 | B, I |
-+----------+----------+--------------------+--------------+---------+------------+
-| Fedora | 22 | N/A | linux-3.14.0 | | B, I |
-+----------+----------+--------------------+--------------+---------+------------+
-| RHEL | 7 | Maipo | linux-3.10.0 | | B, I |
-+----------+----------+--------------------+--------------+---------+------------+
-| Ubuntu | 14.04 | Trusty Tahr | linux-3.13.0 | | B, I, C |
-+----------+----------+--------------------+--------------+---------+------------+
-| Ubuntu | 16.04 | Xenial Xerus | linux-4.4.0 | 3 | B, I, C |
-+----------+----------+--------------------+--------------+---------+------------+
-
-
-Jewel (10.2.z)
---------------
-
-+----------+----------+--------------------+--------------+---------+------------+
-| Distro | Release | Code Name | Kernel | Notes | Testing |
-+==========+==========+====================+==============+=========+============+
-| CentOS | 7 | N/A | linux-3.10.0 | 3 | B, I, C |
-+----------+----------+--------------------+--------------+---------+------------+
-| Debian | 8.0 | Jessie | linux-3.16.0 | 1, 2 | B, I |
-+----------+----------+--------------------+--------------+---------+------------+
-| Fedora | 22 | N/A | linux-3.14.0 | | B, I |
-+----------+----------+--------------------+--------------+---------+------------+
-| RHEL | 7 | Maipo | linux-3.10.0 | | B, I |
-+----------+----------+--------------------+--------------+---------+------------+
-| Ubuntu | 14.04 | Trusty Tahr | linux-3.13.0 | | B, I, C |
-+----------+----------+--------------------+--------------+---------+------------+
-
-Hammer (0.94.z)
----------------
-
-+----------+----------+--------------------+--------------+---------+------------+
-| Distro | Release | Code Name | Kernel | Notes | Testing |
-+==========+==========+====================+==============+=========+============+
-| CentOS | 6 | N/A | linux-2.6.32 | 1, 2 | |
-+----------+----------+--------------------+--------------+---------+------------+
-| CentOS | 7 | N/A | linux-3.10.0 | | B, I, C |
-+----------+----------+--------------------+--------------+---------+------------+
-| Debian | 7.0 | Wheezy | linux-3.2.0 | 1, 2 | |
-+----------+----------+--------------------+--------------+---------+------------+
-| Ubuntu | 12.04 | Precise Pangolin | linux-3.2.0 | 1, 2 | |
-+----------+----------+--------------------+--------------+---------+------------+
-| Ubuntu | 14.04 | Trusty Tahr | linux-3.13.0 | | B, I, C |
-+----------+----------+--------------------+--------------+---------+------------+
-
-Firefly (0.80.z)
-----------------
-
-+----------+----------+--------------------+--------------+---------+------------+
-| Distro | Release | Code Name | Kernel | Notes | Testing |
-+==========+==========+====================+==============+=========+============+
-| CentOS | 6 | N/A | linux-2.6.32 | 1, 2 | B, I |
-+----------+----------+--------------------+--------------+---------+------------+
-| CentOS | 7 | N/A | linux-3.10.0 | | B |
-+----------+----------+--------------------+--------------+---------+------------+
-| Debian | 7.0 | Wheezy | linux-3.2.0 | 1, 2 | B |
-+----------+----------+--------------------+--------------+---------+------------+
-| Fedora | 19 | Schrödinger's Cat | linux-3.10.0 | | B |
-+----------+----------+--------------------+--------------+---------+------------+
-| Fedora | 20 | Heisenbug | linux-3.14.0 | | B |
-+----------+----------+--------------------+--------------+---------+------------+
-| RHEL | 6 | Santiago | linux-2.6.32 | 1, 2 | B, I, C |
-+----------+----------+--------------------+--------------+---------+------------+
-| RHEL | 7 | Maipo | linux-3.10.0 | | B, I, C |
-+----------+----------+--------------------+--------------+---------+------------+
-| Ubuntu | 12.04 | Precise Pangolin | linux-3.2.0 | 1, 2 | B, I, C |
-+----------+----------+--------------------+--------------+---------+------------+
-| Ubuntu | 14.04 | Trusty Tahr | linux-3.13.0 | | B, I, C |
-+----------+----------+--------------------+--------------+---------+------------+
-
-Notes
------
-
-- **1**: The default kernel has an older version of ``btrfs`` that we do not
- recommend for ``ceph-osd`` storage nodes. We recommend using ``XFS``.
-
-- **2**: The default kernel has an old Ceph client that we do not recommend
- for kernel client (kernel RBD or the Ceph file system). Upgrade to a
- recommended kernel.
-
-- **3**: The default kernel regularly fails in QA when the ``btrfs``
- file system is used. We do not recommend using ``btrfs`` for
- backing Ceph OSDs.
-
-
-Testing
--------
-
-- **B**: We build release packages for this platform. For some of these
- platforms, we may also continuously build all ceph branches and exercise
- basic unit tests.
-
-- **I**: We do basic installation and functionality tests of releases on this
- platform.
-
-- **C**: We run a comprehensive functional, regression, and stress test suite
- on this platform on a continuous basis. This includes development branches,
- pre-release, and released code.
-
-.. _CRUSH Tunables: ../../rados/operations/crush-map#tunables
-
-.. _CephFS best practices: ../../cephfs/best-practices
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