Every power utility has a different way of representing the set
of nodes on which to operate. Similarly, many different methods can
be used to access the serial console
of all cluster nodes.
oneSIS provides a generalized wrapper interface that can easily tie into any
existing power or console management solution.
It serves as a common interface for power and console management across all
machines, eliminating the need for an admin to remember the particular
command and syntax used for power management and console access on each
particular group of machines.
The POWERCMD directive is a way to quickly describe how a
particular power management utility works so that the pwr
(section 6.7) command can then interface to it.
Similarly, the CONSOLECMD directive can quickly describe how to
access the remote console of any node, and thereafter the
consl (section 6.8) command can be used to
access a node's serial
console.