Symantec Veritas 5 - Manual (Page 46)

4 When the command prompts, enter a passphrase and confirm it.
5 Change the permissions of the .ssh directory by typing:
# chmod 755 ~/.ssh
6 The file ~/.ssh/id_dsa.pub contains a line that begins with ssh_dss and ends
with the name of the system on which it was created. Copy this line to the
/root/.ssh/authorized_keys2 file on all systems where you plan to install VCS.
If the local system is part of the cluster, make sure to edit the
authorized_keys2 file on that system.
7 Run the following commands on the system where you are installing:
# exec /usr/bin/ssh-agent $SHELL
# ssh-add
This step is shell-specific and is valid for the duration the shell is alive.
8 When the command prompts, enter your DSA passphrase.
You are ready to install VCS on several systems in one of the following ways:
■ Run the installvcs program on any one of the systems
■ Run the installvcs program on an independent system outside the cluster
To avoid running the ssh-agent on each shell, run the X-Window system and
configure it so that you are not prompted for the passphrase. Refer to the
Red Hat documentation for more information.
9 To verify that you can connect to the systems where you plan to install VCS,
type:
# ssh -x -l root north ls
# ssh -x -l root south ifconfig
# ssh-copy-id -i ~/.ssh/id_dsa.pub root@north
The commands should execute on the remote system without having to enter
a passphrase or password.
Setting up shared storage
For VCS I/O fencing, the data disks must support SCSI-3 persistent reservations.
You need to configure a coordinator disk group that supports SCSI-3 PR and verify
that it works.
See “About setting up disk-based I/O fencing” on page 89.
Preparing to install VCS
Performing preinstallation tasks 46