User`s guide

Operations on Virtual Machines and Containers 48
Configuring Passwordless Access to the Source Node
You need to provide the Source Server credentials each time you execute the pbackup and
prestore commands. However, you can allow these utilities to log in to the Source Server
without having to enter the root password. To do this, you should provide each Source Server
with authorized public SSH RSA keys:
1 Log in to the Backup Server as root, and generate a pair of SSH keys - public and private:
# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
c6:19:a8:2c:67:31:15:e6:30:23:2b:8a:b0:63:77:8f [e-mail]
Note that you must leave an empty passphrase in the above procedure. The private key is
saved by default in /root/.ssh/id_rsa, and the public key is saved in
/root/.ssh/id_rsa.pub.
2 Transfer your public key to the /root/.ssh directory on each Source Server (use some
intermediary name for the file not to overwrite the corresponding file on the Source Server):
# scp /root/.ssh/id_rsa.pub [e-mail]:/root/.ssh/temp_name
The authenticity of host 'dhcp-129.parallels.com (192.168.1.129)' can't be
established.
RSA key fingerprint is 01:fc:b6:e9:26:40:1f:1a:41:5f:7a:fb:cf:14:51.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'dhcp-129.parallels.com,192.168.1.129' (RSA) to the
list of known hosts.
[e-mail]'s password:
id_rsa.pub 100% |*****************************| 235 00:00
3 Add the contents of the transferred file to the authorized_keys file in this very
directory on the Source Node. To do this, log in to the Source Server, change to the
/root/.ssh directory, and issue the following command:
# cat temp_name >> authorized_keys
Now the pbackup/prestore utilities should be able to log in to your Source Nodes as root
without having to provide the root password.