CCME cluster variables
During a cluster deployment, CCME creates a file that contains a set of environment variables to describe
the environment in which the cluster has been deployed.
This file is located in /etc/ccme/ccme.env.sh (its access mode is 0644,
and can be sourced to retrieve the environment variables with . /etc/ccme/ccme.env.sh.
All variables start with the CCME_ prefix.