CentOS mailing list wrote:
Kennedy Clark wrote:
A bit off topic, but I keep looking for an answer to this question and coming up with nothing... so I thought I would go to the gurus. :-)
Can anyone recommend a good package for pinging other devices and sending an email/alert when they go down? I'm aware of all kinds of more complex things with GUIs and a zillion other bells and whistles we aren't looking for, but we just want a simple tool (could be daemon or something run from cron) that runs every 1 - 5 minutes and alerts us when stuff disappears. Would need some basic logic like only sending one email/alert when something goes down (vs sending an email every 1-5 minutes until it comes back up). :-) We need to avoid a requirement for an X-windows GUI, but a web-GUI would probably be fine (a GUI-less command-line thing would probably be best).
Bash. Here is what I use for monitoring my website
#!/bin/bash
URL="http://www.911networks.com" EMAIL="artsi@fartsi.com"
lynx -dump "$URL" > /dev/null if [ $? -ne 0 ]; then echo "`date "+%F %T"` - $URL is down" | mail -s "$URL is down" $EMAIL fi
Watch for the wraps and make it executable [chmod 7xx]
This is the sort of thing I was going to suggest. You could go 1 better & have it resubmit itself periodically w/ at(1). Maybe get it to do some argument parsing so you could pass in the URL, EMAIL, then invoke plural instances for however many things you want to monitor ....