I am very satisfied with munin as a monitoring tool (as I only have a simple 2-server setup) but its alerting system is very annoying as you can only configure it to send an e-mail upon every check which generates a warning or an error. It seems like the only option is to use Nagios but in Debian it has Apache as a dependency and I already use nginx on my monitoring machine. All I want is to have the possibility to silence/acknowledge the alarm while I am working on a fix, so that I don't get bombarded with e-mails. Nagios seems like an oversized solution for that anyway. Is there any simple solution for that or am I the only one who feels like he needs such a tool?