I.1 Generate SSH Keys Without a Passphrase
You can generate a new SSH key without a passphrase if on the Zero Downtime Migration service host the authentication key pairs are not available without a passphrase for the Zero Downtime Migration software installed user.
Note:
Currently, only the RSA key format is supported for configuring SSH
connectivity, so use the ssh-keygen command, which generates both
of the authentication key pairs (public and private).
The following example shows you how to generate an SSH key pair for the Zero
Downtime Migration software installed user. You can also use this command to generate
the SSH key pair for the opc user.
Run the following command on the Zero Downtime Migration service host.
zdmuser> ssh-keygen -m PEM -b 2048 -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/zdmuser/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/zdmuser/.ssh/id_rsa.
Your public key has been saved in /home/zdmuser/.ssh/id_rsa.pub.
The key fingerprint is:
c7:ed:fa:2c:5b:bb:91:4b:73:93:c1:33:3f:23:3b:30 zdmuser@zdm_service_host
The key's randomart image is:
+--[ RSA 2048]----+
| |
| |
| |
| . . . |
| S o . = |
| . E . * |
| X.+o.|
| .= Bo.o|
| o+*o. |
+-----------------+
This command generates the id_rsa and id_rsa.pub
files in the zdmuser home, for example,
/home/zdmuser/.ssh.