7.2.4. Installing the SSH key
Whether you use
rhnmd or sshd, you must install the Red Hat Network Monitoring Daemonpublic SSH key on the systems to be monitored to complete the secure connection. To install it:
- Copy the character string (beginning with
ssh-dssand ending with the hostname of the RHN Server). - On the command line of the system to be monitored, switch to the user aligned with the daemon. This is accomplished for
rhnmdwith the command:su - nocpulse - Paste the key character string into the
~/.ssh/authorized_keysfile for the daemon's user. Forrhnmd, this is/opt/nocpulse/.ssh/authorized_keys.If config management is enabled on the systems to be monitored, you may deploy this file across systems using a config channel.Note
If valid entries already exist inauthorized_keys, add the daemon key to the file rather than replacing the existing key. To do so, save the copied text toid_dsa.pubin the same.ssh/directory and then run the following command:cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys. - Finally, ensure the
.ssh/directory andauthorized_keysfile have the appropriate permissions set. This can be done as the daemon's user with the following commands:chmod 700 ~/.sshchmod 600 ~/.ssh/authorized_keys
Once the key is in place and accessible, all probes that require it should allow
ssh connections between the Monitoring infrastructure and the monitored system. You may then schedule probes requiring the monitoring daemon to run against the newly configured systems.
