failoverdns/dnsupdate at master · wlanboy/failoverdns · GitHub

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#!/bin/bash
###########################################
#Configuration
###########################################
domain="domain.com"
recordId="#"
cloudflarelogin="cloudflare-login"
cloudflaretoken="cloudflare-token"
###########################################
#Files
###########################################
IFS=$'\n' read -d '' -r -a iplist < ~/ips
IFS=$'\n' read -d '' -r -a results < ~/results
###########################################
statusweb=()
statuspoints=()
index=0
echo "=================================="
echo "check following ip list with nodeping"
echo "${iplist[@]}"

for i in ${iplist[@]}
do
    echo "=================================="
	echo "checking $i"
	$(curl -m 5 ${results[index]} -o "./res${i}")
	resultstring=$(cat "./res${i}")
	statuspoints[index]=$(cat "./res${i}" | grep -Po '"m":.*?[^\\]",' | grep Success | wc -l)
	resultstring=$(cat "./res${i}" | grep -Po '"m":.*?[^\\]",' | head -n 1)
	if [ "${resultstring}"=="\"m\":\"Success\"," ]
	then
		statusweb[index]=1
		  echo "================="
		  echo "web ip is up"
		  echo "================="
	else
	    statusweb[index]=0
		  echo "================="
		  echo "web ip is down"
		  echo "================="
	fi
	echo " "
	echo "status: ${statusweb[index]}"
	echo "points: ${statuspoints[index]}"
	echo " "
	let index=index+1
done

max=0
counter=0
indexselectedip=0

for point in ${statuspoints[@]}; do
    if (( point > max && statusweb[counter] == 1 )); then
		max=$point
		indexselectedip=$counter
	fi
	let counter=counter+1
done

parameterDomainList="-d a=rec_load_all -d tkn=${cloudflaretoken} -d email=${cloudflarelogin} -d z=${domain}"
domaindata=$(curl https://www.cloudflare.com/api_json.html ${parameterDomainList} -o domainlist)
key=$(cat domainlist | jq '.response.recs.objs[] | {name, rec_id} ' | cut -d ':' -f 2 | grep \" | sed 's/"//g' | sed 's/ //g' | sed 's/,//g' | tr '\n' ' ' )
domainlist=( $key )
echo "checking domainlist: ${domainlist[@]} with cloudflare"
for ((i=1; i < ${#domainlist}; i++))
do
    echo "#${domainlist[$i]} ${i}"
	if [[ "${domainlist[$i]}" == "${domain}" ]]
	then
	    let k=i-1
	    recordId="${domainlist[$k]}"
		echo "break for: ${recordId}"
		break
	fi
	let i=i+1
done

echo " "
echo "=================================="
echo " "
echo "update dns"
echo " "
		echo "=================================="
		echo "Changing web DNS..."
		oldip=$(dig +short ${domain} | head -n 1)
		sleep 2
		echo "current ip: ${oldip}"
		echo "new     ip: ${iplist[$indexselectedip]} (points: ${statuspoints[$indexselectedip]})"
		tester=${iplist[indexselectedip]}
		echo "=================================="
		if [[ "${tester}" == "${oldip}" ]]
		then
		  echo "================="
		  echo "update not needed"
		  echo "================="
		else
		  parameterDomainUpdate="-d act=rec_edit -d a=rec_edit -d tkn=${cloudflaretoken} -d id=${recordId} -d email=${cloudflarelogin} -d z=${domain} -d type=A -d name=${domain} -d content=${iplist[indexselectedip]} -d service_mode=1 -d ttl=1"
		  cloudflareresponse=$(curl https://www.cloudflare.com/api_json.html ${parameterDomainUpdate})
		  echo "response: ${cloudflareresponse}"
		  echo "================="
		  echo "update done"
		  echo "================="
		fi
echo "=================================="
echo "end of script"
echo "=================================="