a simple heartbeat script that checks to see if a server is online every five minutes. if it's not, it sends a text message using the twilio-sms api or an email using mailutils.
If you want to use the twilio-sms api:
git clone https://github.com/joshuaterrill/heartbeat.git
cd heartbeat/text
chmod 775 twilio-sms.sh
chmod 775 heartbeat
#optionally, you can run 'screen' and run the script in another terminal tab
./heartbeat -s <server> -r <rate> -t <recipient>If you want to use mailutils
sudo apt-get install mailutils
git clone https://github.com/joshuaterrill/heartbeat.git
cd heartbeat/email
chmod 775 heartbeat
#optionally, you can run 'screen' and run the script in another terminal tab
./heartbeat -s <server> -r <rate> -t <recipient>if a server is behind a firewall and cannot be pinged, you may install hping3
sudo apt-get install hping3and replace the ping with
if hping3 -S $SERVER -p 8011 -c 1 > /dev/null;