monitoring-plugins-check-logfiles

Nagios plugin check_logfiles

Description

check_logfiles: Plugin for Nagios which scans log files for specific patterns. Features:

- Detection of rotations - usually nightly logfiles are rotated and

compressed. Each operating system or company has it’s own naming

scheme. If this rotation is done between two runs of check_logfiles

also the rotated archive has to be scanned to avoid gaps. The most

common rotation schemes are predefined but you can describe any

strategy (shortly: where and under which name is a logfile

archived).

- More than one pattern can be defined which again can be classified

as warning patterns and critical patterns.

- Triggered actions - Usually nagios plugins return just an exit code

and a line of text, describing the result of the check. Sometimes,

however, you want to run some code during the scan every time you

got a hit. Check_logfiles lets you call scripts either after every

hit or at the beginning or the end of it’s runtime.

- Exceptions - If a pattern matches, the matched line could be a very

special case which should not be counted as an error. You can

define exception patterns which are more specific versions of your

critical/warning patterns. Such a match would then cancel an alert.

- Thresholds - You can define the number of matching lines which are

necessary to activate an alert.

- Protocol - The matching lines can be written to a protocol file the

name of which will be included in the plugin’s output.

- Macros - Pattern definitions and logfile names may contain macros,

which are resolved at runtime.

- Performance data - The number of lines scanned and the number of

warnings/criticals is output.

- Windows - The plugin works with Unix as well as with Windows

(e.g. with ActiveState Perl).

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