corosync software package provides Standards-based cluster framework (daemon and modules), you can install in your Ubuntu 12.04 LTS (Precise Pangolin) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install corosync
corosync is installed in your system.
Make ensure the corosync package were installed using the commands given below,
$ sudo dpkg-query -l | grep corosync *
You will get with corosync package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Administration Utilities |
| Package | corosync |
| Version | 1.4.2-2 |
| Description | Standards-based cluster framework (daemon and modules) |
| Sub Section | Admin |