Red Hat NETWORK SATELLITE 5.2 - CHANNEL MANAGEMENT, Reference Manual

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Chapter 7. Monitoring
154
7.2.4. Installing the SSH key
Whether you use
rhnmd
or
sshd
, you must install the Red Hat Network Monitoring Daemon public
SSH key on the systems to be monitored to complete the secure connection. To install it:
1. Navigate to the
Monitoring � Scout Config Push
page on the Satellite interface and click the
name of the RHN Server that will monitor the client system. The SSH
id_dsa.pub
key is visible on
the resulting page.
2. Copy the character string (beginning with
ssh-dss
and ending with the hostname of the RHN
Server).
3. On the command line of the system to be monitored, switch to the user aligned with the daemon.
This is accomplished for
rhnmd
with the command:
su - nocpulse
4. Paste the key character string into the
~/.ssh/authorized_keys
file for the daemon's user. For
rhnmd
, 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. Refer to
Section 6.7.1, “Preparing Systems for Config
Management”
for details.
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.
7.3.
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
.