HP UX Operating Systems Configuring and enabling ssh, Source System system1 Target System system2

Installation overview 19

Configuring secure shell (ssh) or remote shell before installing products

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 (remsh).Using ssh is the default, and is recommended, to configure a secure shell environment before you install any Veritas product.

This section contains an example on how to set up the 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.

Configuring and enabling ssh

The ssh program enables you to log in and execute commands on a remote system. ssh enables encrypted communication and an authentication process between two untrusted hosts over an insecure network.

In this procedure, you must first create a DSA key pair. From the key pair, you must append the public key from the source system to the authorized_keys file on the target system or systems.

Figure 3-1illustrates this procedure.

Figure 3-1		Creating the DSA key pair and appending it to target systems
Source System: system1			Target System: system2
	Private	Public
	Key	Key

authorized_keys

file

Read the ssh documentation and online manual pages before enabling ssh. For information related to issues regarding ssh configuration contact your operating system support provider.

Visit the OpenSSH website that is located at: http://openssh.org to access online manuals and other resources.