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
We currently recommend:
4.1.4 or later
3.16.3 or later (rbd deadlock regression in 3.16.[0-2])
NOT 3.15.* (rbd deadlock regression)
3.14.*
These are considered pretty old, but if you must:
3.10.*
Firefly (CRUSH_TUNABLES3) tunables are supported starting with 3.15. See CRUSH Tunables for more details.
B-tree File System (Btrfs)
If you use the
btrfsfile system with Ceph, we recommend using a recent Linux kernel (3.14 or later).
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).
Infernalis (9.1.0)¶
Distro |
Release |
Code Name |
Kernel |
Notes |
Testing |
|---|---|---|---|---|---|
CentOS |
7 |
N/A |
linux-3.10.0 |
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)¶
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)¶
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
btrfsthat we do not recommend forceph-osdstorage nodes. Upgrade to a recommended kernel or useXFS.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.
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.
