#!/bin/bash

### This script checks for available ping response from HOST_IP and alerts ntfy in case they're not responding

HOSTS="IP_HOST_1,IP_HOST_2,IP_HOST_3"
topicurl=https://NTFY_SERVER_IP/net_alerts

for i in ${HOSTS//,/ }
do
        LAST_PINGS=$(ping -c 5 "$i" | grep -wic "Unreachable")
        if [ ${LAST_PINGS} != 0  ]; then
                curl -k --retry 3 \
                -d "Ping lost with $i" \
                -H "Title: Ping lost with $i" \
                -H "Priority: high" \
                -H "Tags: warning,boar" \
                $topicurl
        fi
done