Installation guide

Table A.28. Linux::Users set tings
Field Value
Timeout* 15
Critical Maximum Users
Warning Maximum Users
A.5.15. Linux::Virtual Memory
The Linux::Virtual Memory probe monitors the total system memory and collects the following metric:
Virtual Memory - The percent of total system memory - random access memory (RAM) plus swap -
that is free.
Requirements - T he Red Hat Network monitoring daemon (rhnm d) must be running on the monitored
system to execute this probe.
Table A.29. Linux::Virtual Memory set tings
Field Value
Timeout* 15
Warning Minimum Virtual Memory Free
Critical Minimum Virtual Memory Free
A.6. LogAgent
The probes in this section monitor the log files on your systems. You can use them to query logs for
certain expressions and track the sizes of files. For LogAgent probes to run, the nocpulse user must
be granted read access to your log files.
Note that data from the first run of these probes is not measured against the thresholds to prevent
spurious notifications caused by incomplete metric data. Measurements will begin on the second run.
A.6.1. LogAgent::Log Pattern Match
The LogAgent::Log Pattern Match probe uses regular expressions to match text located within the
monitored log file and collects the following metrics:
Regular Expression Matches - T he number of matches that have occurred since the probe last ran.
Regular Expression Match Rate - The number of matches per minute since the probe last ran.
Requirements - T he Red Hat Network monitoring daemon (rhnm d) must be running on the monitored
system to execute this probe. For this probe to run, the nocpulse user must be granted read access to
your log files.
In addition to the name and location of the log file to be monitored, you must provide a regular
expression to be matched against. T he expression must be formatted for egrep, which is equivalent to
grep -E and supports extended regular expressions. T his is the regular expression set for egrep:
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