Establishing communication between nodes is required to install Veritas software from a remote system, or to install and configure a cluster. The node from which the installation utility is run must have permissions to run rsh (remote shell) or ssh (secure shell) utilities. These utilities must run as root on all cluster nodes or remote systems.

You can install products to remote systems using either secure shell (ssh) or remote shell (rsh). ssh is the preferred method of remote communication because it provides a greater level of security than the rsh suite of protocols.

This section contains an example of how to set up ssh password free communication. The example sets up ssh between a source system (system1) that contains the installation directories, and a target system (system2). This procedure also applies to multiple target systems.