Check LMDB Usage

Presentation

This plugin checks percent of pages used and pages free in an LMDB database.

The calculation is based on this formula:

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$$really\,used = \frac{ pages\,used - pages\,free}{max\,pages}$$

For example:

$ perl check_lmdb_usage.pl -H /usr/local/openldap/var/openldap-data -w 30 -c 20 -r
OK - 65% pages used / 34% pages free

With performance data, it allows to create graph to follow evolution of this indicator.

Configuration

Required Perl modules:

• Getopt::Std

• File::Basename

You also require the mdb_stat utility.

Usage

$ perl check_lmdb_usage.pl -H <db_home> [-S <mdb_stat>] [-h] [-v] [-V]

Mandatory Options

-H

Home of MDB files

-w

Warning threshold in percent

-c

Critical threshold in percent

Other options

-S

Path to mdb_stat utility

-v

Verbose

-V

Print version and exit

-h

Print help and exit

-f

Performance data

-r

Reverse mode, use warning and critical levels for free pages instead of used pages

Download

This plugin, along with all other Nagios plugins from this site, can be downloaded in a single archive.