Check if Pi-Hole is up and running and restart it if needed

checkpihole.sh

#/bin/bash
#Tested with Pi-Hole v.4

PI_HOST=localhost

echo "Checking Pi-Hole status"

curl http://$PI_HOST/admin/api.php?summary 2>/dev/null | grep '"status":"enabled"' > /dev/null

if [ $? -eq 0 ]; then
    echo "Pi-Hole is up and running"
else
    echo "Pi-Hole is NOT running!"
    
    echo "Stopping Pi-Hole"
    /usr/sbin/service pihole-FTL stop; /usr/sbin/service lighttpd stop
    sleep 10s
    echo "Starting Pi-Hole"
    /usr/sbin/service pihole-FTL start; /usr/sbin/service lighttpd start
    echo "Done"
fi