ClusterShell is distributed in several packages. On RedHat-like OS, we recommend to use the RPM package (.rpm) distribution.
As system software for cluster, ClusterShell is primarily made for system-wide installation to be used by system administrators. However, changes have been made so that it's now possible to install it without root access (see Installing ClusterShell as user using pip).
ClusterShell should work with any Unix  operating systems which provides Python 2.7 or 3.x and OpenSSH or any compatible Secure Shell clients.
Furthermore, ClusterShell's engine has been optimized when the
syscall is available or even better, when the
epoll_wait() syscall is
available (Linux only).
For instance, ClusterShell is known to work on the following operating systems:
- Red Hat Enterprise Linux 7 (Python 2.7)
- Red Hat Enterprise Linux 8 (Python 3.6)
- Red Hat Enterprise Linux 9 (Python 3.9)
- Fedora 30 and above (Python 2.7 to 3.10+)
- Debian 10 "buster" (Python 3.7)
- Debian 11 "bullseye" (Python 3.9)
- Ubuntu 20.04 (Python 3.8)
- Mac OS X 12+ (Python 2.7 and 3.8)
ClusterShell is an open-source project distributed under the GNU Lesser General Public License version or later (LGPL v2.1+), which means that many possibilities are offered to the end user. Also, as a software library, ClusterShell should remain easily available to everyone. Hopefully, packages are currently available for Fedora Linux, RHEL (through EPEL repositories), Debian, Arch Linux and more.
Python support overview¶
As seen in Requirements, ClusterShell supports Python 2.7 and onwards, at least up to Python 3.10 at the time of writing.
The table below provides a few examples of versions of Python supported by ClusterShell packages as found in some common Linux distributions:
|Operating System||System Python version used by the clustershell tools||Alternate Python support packaged (version-suffixed tools)|
|RHEL 7||Python 2.7||Python 3.6|
|RHEL 8||Python 3.6|
|RHEL 9||Python 3.9|
|Fedora 36||Python 3.10|
|openSUSE Leap 15||Python 2.7||Python 3.6|
|SUSE SLES 12||Python 2.7||Python 3.4|
|SUSE SLES 15||Python 2.7||Python 3.6|
|Ubuntu 18.04 LTS||Python 3.6|
|Ubuntu 20.04 LTS||Python 3.8|
Red Hat Enterprise Linux¶
ClusterShell packages are maintained on Extra Packages for Enterprise Linux EPEL for Red Hat Enterprise Linux (RHEL) and its compatible spinoffs such as Alma Linux and Rocky Linux. At the time of writing, ClusterShell 1.9.2 is available on EPEL 7, 8 and 9.
Install ClusterShell from EPEL¶
First you have to enable the
yum EPEL repository. We recommend to download
and install the EPEL repository RPM package. On CentOS, this can be easily
done using the following command:
$ yum --enablerepo=extras install epel-release
Then, the ClusterShell installation procedure is quite the same as for Fedora Updates, for instance:
$ yum install clustershell
With EPEL 7, the Python 2 modules and tools are installed by default. If interested in Python 3 support, simply install the additional ClusterShell's Python 3 subpackage using the following command:
$ yum install python36-clustershell
The Python 3 subpackage is named
python36-clustershell instead of
on EPEL 7 only.
On EPEL 7, Python 3 versions of the tools are installed as tool-pythonversion,
With EPEL 8 and 9, however, Python 3 is the system default, and Python 2 has been deprecated. Thus only Python 3 is supported by the EPEL clustershell packages, the tools are using Python 3 by default and are not suffixed anymore.
At the time of writing, ClusterShell 1.9.2 is available on Fedora 37 (releases being maintained by the Fedora Project).
Install ClusterShell from Fedora Updates¶
ClusterShell is part of Fedora, so it is really easy to install it with
dnf, although you have to keep the Fedora updates default repository.
The following command checks whether the packages are available on a Fedora
$ dnf list \*clustershell Available Packages clustershell.noarch 1.8-1.fc26 fedora python2-clustershell.noarch 1.8-1.fc26 fedora python3-clustershell.noarch 1.8-1.fc26 fedora
Then, install ClusterShell's library module and tools using the following command:
$ dnf install clustershell
Prior to Fedora 31, Python 2 modules and tools were installed by default. If interested in Python 3 support, simply install the additional ClusterShell's Python 3 subpackage using the following command:
$ dnf install python3-clustershell
Prior to Fedora 31, Python 3 versions of the tools are installed as
On Fedora 31 and onwards, only Python 3 is supported.
Install ClusterShell from Fedora Updates Testing¶
Recent releases of ClusterShell are first available through the
Test Updates repository of Fedora, then it is later pushed to the stable
updates repository. The following
dnf command will also checks for
packages availability in the updates-testing repository:
$ dnf list \*clustershell --enablerepo=updates-testing
To install, also add the
--enablerepo=updates-testing option, for
$ dnf install clustershell --enablerepo=updates-testing
ClusterShell is available in openSUSE Tumbleweed (Factory) and Leap since 2017:
$ zypper search clustershell Loading repository data... Reading installed packages... S | Name | Summary | Type --+----------------------+-------------------------------------------------------+-------- | clustershell | Python framework for efficient cluster administration | package | python2-clustershell | ClusterShell module for Python 2 | package | python3-clustershell | ClusterShell module for Python 3 | package
To install ClusterShell on openSUSE, use:
$ zypper install clustershell
Python 2 module and tools are installed by default. If interested in Python 3 support, simply install the additional ClusterShell's Python 3 subpackage using the following command:
$ zypper install python3-clustershell
Python 3 versions of the tools are installed as tool-pythonversion, like
ClusterShell is available in Debian main repository (since 2011).
To install it on Debian, simply use:
$ apt-get install clustershell
You can get the latest version on:
Like Debian, it is easy to get and install ClusterShell on Ubuntu (also with
apt-get). To do so, please first enable the universe repository.
ClusterShell is available since "Natty" release (11.04):
Installing ClusterShell the Python way¶
Installing ClusterShell as root using pip  is discouraged and can result in conflicting behaviour with the system package manager. Use packages provided by your OS instead to install ClusterShell system-wide.
Installing ClusterShell as user using pip¶
To install ClusterShell as a standard Python package using pip as an user:
$ pip install --user ClusterShell
Or alternatively, using the source tarball:
$ pip install --user ClusterShell-1.x.tar.gz
Then, you might need to update your
PATH to easily use the Tools,
and possibly set the
PYTHONPATH environment variable to be able to import
the library, and finally
MANPATH for the man pages:
$ export PATH=$PATH:~/.local/bin $ $ # Might also be needed: $ export PYTHONPATH=$PYTHONPATH:~/.local/lib $ export MANPATH=$MANPATH:$HOME/.local/share/man
Configuration files are installed in
~/.local/etc/clustershell and are
automatically loaded before system-wide ones (for more info about supported
user config files, please see the clush.conf or Node groups
Current source is available through Git, use the following command to retrieve the latest development version from the repository:
$ git clone email@example.com:cea-hpc/clustershell.git
|||Unix in the same sense of the Availability: Unix notes in the Python documentation|
|||pip is a tool for installing and managing Python packages, such as those found in the Python Package Index|