On this somewhat binary day (101111), I just submitted my first Munin plugin to http://exchange.munin-monitoring.org and once it is approved it should be available at http://exchange.munin-monitoring.org/plugins/system_users/details/ .
It simply lets you graph the number of logged in users with Munin.
Example of the daily graph:
For an explanation of what munin is have a look here: http://munin-monitoring.org/
From the site:
Munin is a networked resource monitoring tool that can help analyze resource trends and “what just happened to kill our performance?” problems. It is designed to be very plug and play. A default installation provides a lot of graphs with almost no work.
If you let me, that is..
I recently noted that the feed crawler for google reader leaves a note about the number of subscribers to your feed with its requests.
Prior to that I was thinking about trying my way with writing a WordPress plugin, so bingo!
This is basically a pretty lame rewrite of the hello dolly plugin. But somebody else might learn something from my mistakes while I toy around a bit with this..
For now you can download it here. I might put it up on the WordPress plugin site later.
That is if I get around to write an admin page where you can specify wich log file to read and so on..
Right now all it does is display the subscriber count in the admin header from the default apache log.
Go ahead, give it a spin!