persistent storage for checks Monitoring::Plugin

[Holger Weiß]

* Florian Lohoff <f at zz.de> [2014-01-23 11:59]:
> Currently i simply create a directory and i drop my cache files
> somewhere in /var/lib/nagios3/run something but i think it'll be
> a good idea to formalize the way to do persistent storage
> via Monitoring::Plugin

Someone posted a Nagios::Plugin::Differences module a few years ago, you
might want to look into that:

https://www.monitoring-plugins.org/archive/devel/2009-September/007749.html
https://www.monitoring-plugins.org/archive/devel/attachments/20090904/65c2d73a/attachment.ksh

I haven't tested it myself, but I guess it would be nice to get that
onto CPAN if it works well.

Holger