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151 lines
7.3 KiB
ReStructuredText
151 lines
7.3 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 or later:
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- 4.19.z
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- 4.14.z
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- 5.x
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For CephFS, see the section about `Mounting CephFS using Kernel Driver`_
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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, systemd).
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Octopus (15.2.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 | 8 | N/A | linux-4.18 | | B, I, C |
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+----------+----------+--------------------+--------------+---------+------------+
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| CentOS | 7 | N/A | linux-3.10.0 | 4, 5 | B, I |
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+----------+----------+--------------------+--------------+---------+------------+
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| Debian | 10 | Buster | linux-4.19 | | B |
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+----------+----------+--------------------+--------------+---------+------------+
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| RHEL | 8 | Ootpa | linux-4.18 | | B, I, C |
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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 | 18.04 | Bionic Beaver | linux-4.15 | 4 | B, I, C |
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+----------+----------+--------------------+--------------+---------+------------+
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| openSUSE | 15.2 | Leap | linux-5.3 | 6 | |
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+----------+----------+--------------------+--------------+---------+------------+
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| openSUSE | | Tumbleweed | | | |
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+----------+----------+--------------------+--------------+---------+------------+
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Nautilus (14.2.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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| 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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| Ubuntu | 18.04 | Bionic Beaver | linux-4.15 | 3 | B, I, C |
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+----------+----------+--------------------+--------------+---------+------------+
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| openSUSE | 15.1 | Leap | linux-4.12 | 6 | |
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+----------+----------+--------------------+--------------+---------+------------+
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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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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 ``BlueStore``
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starting with Luminous, and ``XFS`` for previous releases with ``Filestore``.
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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 recommend using ``BlueStore`` starting from
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Luminous, and ``XFS`` for previous releases with ``Filestore``.
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- **4**: ``btrfs`` is no longer tested on this release. We recommend
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using ``bluestore``.
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- **5**: Some additional features related to dashboard are not available.
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- **6**: Packages are built regularly, but not distributed by upstream Ceph.
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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 perform
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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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.. _Mounting CephFS using Kernel Driver: ../../cephfs/mount-using-kernel-driver#which-kernel-version
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