SUM allows you to log in with a password or by providing an SSH key.
Procedure
-
On the node that is running
SUM, type
ssh-keygen -t rsa.
SUM also supports DSA encryption key format. To create a DSA encryption key, type
ssh-keygen -t dsa. A passphrase is optional.
-
Save the key in the directory
.ssh/id_rsa.pub. Root users, use the directory
/root/.ssh.
-
Verify that the private key is in PEM format by opening the key and viewing the top of the key for the following text:
---- BEGIN RSA PRIVATE KEY ----
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If necessary, on the node you want to update, create an
.ssh directory at the root level. Set the permissions level on the directory to 700.
-
Determine if the node you want to update has the filename
.ssh/authorized_keys. If this file is not present, create or append this file. Set the permissions on the
authorized_keys file to 640.
NOTE: If you append the file, more users are authorized to use the private key.
-
Copy the contents of
.ssh/id_rsa.pub on the host node, and then paste them into the filename
.ssh/authorized_keys on the remote node.
-
Open an SSH path between the host node and the node you want to update.
- Type
ssh [email protected]. This parameter opens a shell path.
- Type
ssh [email protected] uname. This parameter executes the command and returns.
-
SUM requires access to
id_rsa (private key file), and the optional passphrase.
NOTE: If other applications require the public key in PEM format, you can convert it by typing
ssh-keygen -e -f id_rsa.pub > id_rsa_pub.pem. Open the key, and look at the PEM format for
---- BEGIN SSH2 PUBLIC KEY ----.