Munin VS Nagios

I rediscovered Munin. To my surprise it is written entirely in Perl. I remember Munin from years ago... it still seems healty and maintained and lies ready on your Deb-Repositories. So I followed the Easy Install Guide... which really is easy, but fails to mention that you need to install your own HTTP-Server to serve the HTML-reports.

A bit of background, which may make understanding my choices in this lib easier: Munin is a resource monitoring tool using rrdtool, usually run in a Server/Client Setup. The client accepts plugins which are just executables in a directory. Usually written in a scripting language, but it actually doesn't matter. Data is fetched every 5 minutes, plugins are first run with a config argument to spit out a munin graph config, followed by a run without arguments to present data. To support higher resolutions than just "every 5 minutes", graph config can contain config to tell munin one collects it every second. Then the fetching part needs to run as a daemon, writing a cache somewhere which gets output when munin wants the data.

Munin plugins and management script for monitoring various Pi-hole® statistics.

When you do not have enough power you would get errors because looking up the plots would simply fail. Sounds more that there is one disk which is slower. I had one 2TB external usb which was really slow and the latency of lookups was through the roof. Are you on linux ? Then install munin-monitoring.org it shows latency of the disks out of the box.

what os ? on linux install https://munin-monitoring.org/ it will give you disk latency information.

I'd say give Munin a try.

Munin plugins for monitoring Pi-hole®. Transforms a server into a powerful monitoring platform, as simple as one, two, three, ...four.

I've used this opportunity to look at some recent init files.

Here's one of the first I stumbled upon.

https://github.com/NagiosEnterprises/nagioscore/blob/master/...

It's 288 lines long; the LSB dependency nonsense is 8 lines of that.

Then I looked up one for Postgres;

https://wiki.postgresql.org/wiki/Lsb_conforming_init_script

This one is a whooping 356 lines long, LSB is again about 10 lines long, depending whether you count the header or not.

I don't think the "LSB dependency" argument holds water.

wget -O nagioscore.tar.gz https://github.com/NagiosEnterprises/nagioscore/archive/nagios-4.4.12.tar.gz

Might be this bug? https://github.com/NagiosEnterprises/nagioscore/issues/861

As far as i know there is no option to log all executed service checks except the debug log. Probably you are looking for log_service_retries=1 ?