Enabling SSH
The SSH program enables you to log into and execute commands on a remote system. SSH enables encrypted communications and an authentication process between two
1.Log in as root on the source system from which you want to install the Veritas product.
2.To generate a DSA key pair on the source system, enter:
#
The system displays the following output:
Generating public/private dsa key pair.
Enter file in which to save the key (//.ssh/id_dsa):
3.Press Enter to accept the default location of /.ssh/id_dsa. System output similar to the following is displayed:
Enter pass phrase (empty for no pass phrase):
4.Do not enter a pass phrase.
Press Enter: Enter same pass phrase again: Press Enter again.
5.Ensure that the /.ssh directory is on all the target installation systems. If that directory is missing, create it on the target system and set the write permission to root only:
# mkdir /.ssh# chmod
6.Ensure that the Secure file transfer program (SFTP) is enabled on all the target installation systems. To enable SFTP, the /opt/ssh/etc/sshd_config file must contain the following two lines:
PermitRootLogin yes Subsystem
7.Restart SSH:
#/sbin/init.d/secsh start
8.To copy the public DSA key, /.ssh/id_dsa.pub to each target system, type the following commands:
#sftp target_sys
If this is the first time this command is run on a system, the following output is displayed:
Connecting to target_sys...
The authenticity of host 'target_sys (10.182.00.00)' can't be established. DSA key fingerprint is fb:6f:9e:61:91:9e:44:6b:87:86:ef:68:a6:fd:87:7d.
Are you sure you want to continue connecting (yes/no)?
9.Enter yes. Output similar to the following is displayed:
Warning: Permanently added 'target_sys,10.182.00.00'(DSA) to the list of known hosts.root@target_sys password:
10.Enter the root password.
11.At the sftp prompt, type the following command:
sftp> put /.ssh/id_dsa.pub
The following output is displayed: