--- /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
Code Review / stor4nfv.git / blobdiff