Check LMDB Usage


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

The calculation is based on this formula:

mdb_stat graphic

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

For example:

$ perl -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.


Required Perl modules:

You also require the mdb_stat utility.


$ perl -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


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