Note
If valid entries already exist in
authorized_keys
, add the daemon key to the file
rather than replacing the existing key. To do so, save the copied text to
id_dsa.pub
in the same
.ssh/
directory and then run the following command:
cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
.
5. Finally, ensure the
.ssh/
directory and
authorized_keys
file have the appropriate
permissions set. This can be done as the daemon's user with the following commands:
chmod 700 ~/.ssh
chmod 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.
3.
mysql-server
package
If your RHN Satellite Server will serve Monitoring-entitled client systems against which you wish
to run MySQL probes, you must configure the
mysql-server
package on the RHN Satellite
Server. Refer to
Appendix C, Probes
for a listing of all available probes.
Subscribe the Satellite to the Red Hat Enterprise Linux AS Extras channel and install the
mysql-server
package either through the RHN website or via
up2date
.
Two additional packages will also be downloaded in the transaction. These are needed for the
mysql-server
package to be installed and run successfully. Once finished, your Satellite may
be used to schedule MySQL probes.
4. Notifications
In addition to viewing probe status within the RHN interface, you may be notified whenever a
probe changes state. This is especially important when monitoring mission-critical production
systems. For this reason, Red Hat recommends taking advantage of this feature.
To enable probe notifications within RHN, you must have identified a mail exchange server and
mail domain during installation of your RHN Satellite Server and configured sendmail to
properly handle incoming mail. Refer to the Installation chapter of the RHN Satellite Server
Installation Guide for details.
4.1. Creating Notification Methods
Daemon
167
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