Script to do both IPv4 and IPv6 host health checks, also supporting hosts that only have one address class

healthcheck.sh

#!/bin/ksh

hostname="$1"
url_protocol="https://"
url_path="/cbace7c0fbe7ffad8af83f61a550dcef/xxxxx_nvwwcsKpsN1qajmbto1_500.jpg"

## TODO support CNAMES properly - it throws things off

###
### IPv4 Health Check
###

success=0
mesg=""

if [[ `host -t A ${hostname}` != *"has no"* ]]; then
	ping -o $hostname > /dev/null

	if [ $? == 0 ]; then
	    echo "${url_protocol}${hostname}${url_path}"
	    curl -s -4  --connect-timeout 10 "${url_protocol}${hostname}${url_path}" > /dev/null
		if [ $? == 0 ]; then
			success=1
		else
			mesg="failed to get resource via http"
			success=0
		fi
	else 
	   mesg="failed to ping ${hostname}, exit code: $?"
	   success=0;
	fi

	echo "IPv4:${hostname} success status: ${success} - ${mesg}" 
else 
    echo "IPv4:${hostname} no IPv4 address"
fi

###
### IPv6 Health Check
###

success=0
mesg=""

if [[ `host -t AAAA ${hostname}` != *"has no"* ]]; then
	ping6 -o $hostname > /dev/null

	if [ $? == 0 ]; then
		curl -s -6 --connect-timeout 10 "${url_protocol}${hostname}${url_path}" > /dev/null
		if [ $? == 0 ]; then
			success=1
		else
			mesg="failed to get resource via http"
			success=0
		fi
	else 
	   mesg="failed to ping6 ${hostname}, exit code: $?"
	   success = 0;
	fi

	echo "IPv6:${hostname} success status: ${success} - ${mesg}" 
else 
    echo "IPv6:${hostname} no IPv4 address"
fi