Red Hat NETWORK 3.6 -, Reference Manual

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168 Appendix C. Probes
C.10.1. RHN Satellite Server::Check Alive
The RHN Satellite Server::Check Alive probe is useful in ensuring the viability of your Monitoring-
enabled Satellite. It reports the following metrics:
•
Probe Count — The number of probes configured on the Satellite.
•
Percent OK — The percent of probes in an OK state.
•
Percent WARNING — The percent of probes in a WARNING state.
•
Percent CRITICAL — The percent of probes in a CRITICAL state.
•
Percent PENDING — The percent of probes in a PENDING state.
•
Percent UNKNOWN — The percent of probes in an UNKNOWN state.
•
Recent State Changes — The number of state changes in the last hour (a measure of volatility).
•
Imminent Probes — The number of probes scheduled to run in the next 10 minutes (a measure of
scheduler efficiency).
•
Execution Time — The maximum, minimum, and average last execution time in seconds.
•
Probe Latency — The average difference in seconds between when probes are scheduled to run and
when they actually do run.
•
Satellite Latency — The amount of time in seconds since the Satellite last checked in.
If monitoring is critical to your infrastructure, consider setting the probe to run every five minutes,
alert after a single failure, and renotify after 10 minutes to ensure this probe functions optimally.
Field Value
Timeout* 20
Critical Maximum Satellite Latency
Warning Maximum Satellite Latency
Table C-63. RHN Satellite Server::Check Alive settings
C.10.2. RHN Satellite Server::Disk Space
The RHN Satellite Server::Disk Space probe monitors the free disk space on a Satellite and collects
the following metrics:
•
File System Used — The percent of the current filesystem now in use.
•
Space Used — The file size used by the current filesystem.
•
Space Available — The file size available to the current filesystem.
Field Value
Device Pathname* /dev/hda1
Critical Maximum File System Used
Warning Maximum File System Used
Critical Maximum Space Used