A simple monitoring system with web-console.
Just create a config file like this:
# cat /etc/smoncfg.py
from libsmon import Checker, CMDChecker
CHECK_MDRAID = "sudo mdadm --detail --test --scan"
CMDChecker(name="mdraid", cmd=CHECK_MDRAID, interval=120)
CMDChecker(name="backups",
cmd="ssh -o BatchMode=yes backupserver.net '/usr/bin/check_backups.sh'", interval=600)
Then run smon.py and browse the results on http://localhost:8181/ . You may want to protect this page with a password :).