projects / ceph.git / blame
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|---|---|---|
| 7c673cae FG |
1 | ==================== |
| 2 | OS Recommendations | |
| 3 | ==================== | |
| 4 | ||
| 5 | Ceph Dependencies | |
| 6 | ================= | |
| 7 | ||
| 8 | As a general rule, we recommend deploying Ceph on newer releases of Linux. | |
| 9 | We also recommend deploying on releases with long-term support. | |
| 10 | ||
| 11 | Linux Kernel | |
| 12 | ------------ | |
| 13 | ||
| 14 | - **Ceph Kernel Client** | |
| 15 | ||
| 224ce89b WB |
16 | If you are using the kernel client to map RBD block devices or mount |
| 17 | CephFS, the general advice is to use a "stable" or "longterm | |
| 18 | maintenance" kernel series provided by either http://kernel.org or | |
| 19 | your Linux distribution on any client hosts. | |
| 7c673cae | 20 | |
| 1e59de90 TL |
21 | For RBD, if you choose to *track* long-term kernels, we recommend |
| 22 | *at least* 4.19-based "longterm maintenance" kernel series. If you can | |
| 23 | use a newer "stable" or "longterm maintenance" kernel series, do it. | |
| 7c673cae | 24 | |
| f67539c2 TL |
25 | For CephFS, see the section about `Mounting CephFS using Kernel Driver`_ |
| 26 | for kernel version guidance. | |
| 7c673cae | 27 | |
| 224ce89b | 28 | Older kernel client versions may not support your `CRUSH tunables`_ profile |
| 1e59de90 TL |
29 | or other newer features of the Ceph cluster, requiring the storage cluster to |
| 30 | be configured with those features disabled. For RBD, a kernel of version 5.3 | |
| 31 | or CentOS 8.2 is the minimum necessary for reasonable support for RBD image | |
| 32 | features. | |
| 7c673cae | 33 | |
| 7c673cae FG |
34 | |
| 35 | Platforms | |
| 36 | ========= | |
| 37 | ||
| 38 | The charts below show how Ceph's requirements map onto various Linux | |
| 39 | platforms. Generally speaking, there is very little dependence on | |
| 33c7a0ef | 40 | specific distributions outside of the kernel and system initialization |
| 20effc67 | 41 | package (i.e., sysvinit, systemd). |
| 7c673cae | 42 | |
| 33c7a0ef TL |
43 | +--------------+--------+------------------------+--------------------------------+-------------------+-----------------+ |
| 44 | | Release Name | Tag | CentOS | Ubuntu | OpenSUSE :sup:`C` | Debian :sup:`C` | | |
| 45 | +==============+========+========================+================================+===================+=================+ | |
| 46 | | Quincy | 17.2.z | 8 :sup:`A` | 20.04 :sup:`A` | 15.3 | 11 | | |
| 47 | +--------------+--------+------------------------+--------------------------------+-------------------+-----------------+ | |
| 48 | | Pacific | 16.2.z | 8 :sup:`A` | 18.04 :sup:`C`, 20.04 :sup:`A` | 15.2 | 10, 11 | | |
| 49 | +--------------+--------+------------------------+--------------------------------+-------------------+-----------------+ | |
| 50 | | Octopus | 15.2.z | 7 :sup:`B` 8 :sup:`A` | 18.04 :sup:`C`, 20.04 :sup:`A` | 15.2 | 10 | | |
| 51 | +--------------+--------+------------------------+--------------------------------+-------------------+-----------------+ | |
| 52 | ||
| 53 | - **A**: Ceph provides packages and has done comprehensive tests on the software in them. | |
| 54 | - **B**: Ceph provides packages and has done basic tests on the software in them. | |
| 55 | - **C**: Ceph provides packages only. No tests have been done on these releases. | |
| 56 | ||
| 57 | .. note:: | |
| 58 | **For Centos 7 Users** | |
| 59 | ||
| 60 | ``Btrfs`` is no longer tested on Centos 7 in the Octopus release. We recommend using ``bluestore`` instead. | |
| 7c673cae FG |
61 | |
| 62 | .. _CRUSH Tunables: ../../rados/operations/crush-map#tunables | |
| 63 | ||
| f67539c2 | 64 | .. _Mounting CephFS using Kernel Driver: ../../cephfs/mount-using-kernel-driver#which-kernel-version |