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