ZNC-Logs

Configuration

Make sure Python3 is installed and added to your path, this plugin will try to use /usr/bin/python3
Enable the log-plugin in znc (if you enable it for the complete instance, there will be some issues because this plugin only uses the network-name + channel-name, if there are some networks with the same name, it will count all lines together)
Add this to your /etc/munin/plugin-conf.d/munin-node

[znc_logs]
user $your_znc_user
group $your_znc_group
env.logdir $path_to_znc_logs

$your_znc_user has to be an user, which can list $path_to_znc_logs and read all files in this directory.

Run sudo wget -O /usr/share/munin/plugins/znc_logs https://raw.githubusercontent.com/munin-monitoring/contrib/master/plugins/znc/znc_logs.py to download the znc_logs.py file from github to /usr/share/munin/plugins/znc_logs (of course you can use any directory you want)
Make the plugin-file executable sudo chmod +x /usr/share/munin/plugins/znc_logs
Enable the plugin with sudo ln -s /usr/share/munin/plugins/znc_logs /etc/munin/plugins/
Try the plugin with sudo munin-run znc_logs
Restart munin-node to load the plugin: sudo service munin-node restart

ZNC is an IRC-Bouncer (a proxy to irc), further information: znc.in

This plugin counts the lines/minute in znc's log-files

If you experience any issues, feel free to contact me at thor77[at]thor77.org