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158 Chapter 7. Monitoring
the internal process monitors to be executed. You may, however, be able to
run these probes using the systems’ existing SSH daemon (
sshd
). Refer to
Section 7.2 Red Hat Network Monitoring Daemon (
rhnmd
) for installation instructions
and a quick list of probes requiring this secure connection. Refer to Appendix C Probes
for the complete list of available probes.
7.2. Red Hat Network Monitoring Daemon (
rhnmd
)
To get the most out of your Monitoring entitlement, Red Hat suggests installing the Red
Hat Network Monitoring Daemon on your client systems. Based upon OpenSSH ,
rhnmd
enables the RHN Satellite Server to communicate securely with the client system to access
internal processes and retrieve probe status.
Please note that the Red Hat Network Monitoring Daemon requires that monitored systems
allow connections on port 4545. You may avoid opening this port and installing the daemon
altogether by using
sshd
instead. Refer to Section 7.2.3 Configuring SSH for details.
7.2.1. Probes requiring the daemon
An encrypted connection, either through the Red Hat Network Monitoring Daemon or
sshd
, is required on client systems for the following probes to run:
•
Linux::CPU Usage
•
Linux::Disk IO Throughput
•
Linux::Disk Usage
•
Linux::Inodes
•
Linux::Interface Traffic
•
Linux::Load
•
Linux::Memory Usage
•
Linux::Process Counts by State
•
Linux::Process Count Total
•
Linux::Process Health
•
Linux::Process Running
•
Linux::Swap Usage
•
Linux::TCP Connections by State
•
Linux::Users
•
Linux::Virtual Memory