cman software package provides Red Hat cluster suite - cluster manager, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install cman
cman is installed in your system.
Make ensure the cman package were installed using the commands given below,
$ sudo dpkg-query -l | grep cman *
You will get with cman package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Administration Utilities |
| Package | cman |
| Version | 3.0.12-3.2+deb7u2 |
| Description | Red Hat cluster suite - cluster manager |
| Sub Section | Admin |