Spot Reaper is the PANIC! button that the OS presses when an AWS Spot Instance Termination Notificaiton arrives.
git clone https://www.github.com/alex4108/spot-reaper.git
sudo bash spot-reaper/install.sh
Spot Reaper will install to sysvinit (service) or systemd (systemctl) so you can stop/start it through the appropriate interface.
Once it's installed, put your handler script at /etc/spot-reaper/handler and ensure root has executible permission.
systemctl enable spot-reaper
systemctl start spot-reaper
systemctl status spot-reaper
chkconfig spot-reaper on
service spot-reaper start
Spot Reaper will run as a system service and monitor for spot termination notifications.
When a new spot termination arrives, the reaper will execute /etc/spot-reaper/handler. You can use this to implement any actions to take in the event a spot termination is about to arrive.