Node deviations

The independent behavior of nodes and functional groups of nodes can be configured in several ways. In a cluster, compute nodes may run different services (daemons), have different configuration files, mount different filesystems, and otherwise behave differently from other class of nodes in many ways.

These differences usually require deviations from the master image that configure unique behavior for each class of nodes. The types of deviations are grouped into three main categories: deviation of system services, deviation of files and directories, and deviation in usage of local hard disks (if they exist).