Red Hat NETWORK SATELLITE 5.3.0 - CHANNEL MANAGEMENT, Справочное руководство

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Configuring SSH
159
The
rhnmd
package can be found in the RHN Tools channel for all Red Hat Enterprise Linux
distributions. To install it:
1. Subscribe the systems to be monitored to the RHN Tools channel associated with the system.
This can be done individually through the
System Details � Channels � Software
subtab or for
multiple systems at once through the
Channel Details � Target Systems
tab.
2. Once subscribed, open the
Channel Details � Packages
tab and find the
rhnmd
package (under
'R').
3. Click the package name to open the
Package Details
page. Go to the
Target Systems
tab, select
the desired systems, and click
Install Packages
.
4. Install the SSH public key on all client systems to be monitored, as described in
Section 8.2.4,
“Installing the SSH key”
.
5. Start the Red Hat Network Monitoring Daemon on all client systems using the command:
service rhnmd start
6. When adding probes requiring the daemon, accept the default values for
RHNMD User
and
RHNMD Port
:
nocpulse
and
4545
, respectively.
8.2.3. Configuring SSH
If you wish to avoid installing the Red Hat Network Monitoring Daemon and opening port 4545 on
client systems, you may configure
sshd
to provide the encrypted connection required between the
systems and RHN. This may be especially desirable if you already have
sshd
running. To configure
the daemon for monitoring use:
1. Ensure the SSH package is installed on the systems to be monitored:
rpm -qi openssh-server
2. Identify the user to be associated with the daemon. This can be any user available on the system,
as long as the required SSH key can be put in the user's
~/.ssh/authorized_keys
file.
3. Identify the port used by the daemon, as identified in its
/etc/ssh/sshd_config
configuration
file. The default is port 22.
4. Install the SSH public key on all client systems to be monitored, as described in
Section 8.2.4,
“Installing the SSH key”
.
5. Start the
sshd
on all client systems using the command:
service sshd start
6. When adding probes requiring the daemon, insert the values derived from steps 2 and 3 in the
RHNMD User
and
RHNMD Port
fields.