Update Route53's IP to the server's current IP

update_route53_ip.sh

#!/bin/bash

ZONE_ID="[REDACTED]"
NAME="[REDACTED]"

AWS_IP=`aws route53 list-resource-record-sets --hosted-zone-id $ZONE_ID  | jq '(.ResourceRecordSets[] | select(.Name | test("'$NAME'")) | [.ResourceRecords] )' | jq -r '.[0][0].Value'`

RETVAL=$?
if [ $RETVAL -ne 0 ]; then # Check if exit code doesn't equal 0
    exit 0
fi

echo "AWS IP: $AWS_IP"

CUR_IP=`curl -s icanhazip.com`

RETVAL=$?
if [ $RETVAL -ne 0 ]; then
    exit 0
fi

echo "CURRENT IP: $CUR_IP"

# If current IP is equal to the AWS IP, we don't need to change anything
if [ "$CUR_IP" = "$AWS_IP" ]; then
    exit 0
fi

echo    '	{	'                                                                       >  insert_rulset.json
echo    '	    "HostedZoneId" : "'$ZONE_ID'", '                                        >> insert_rulset.json
echo    '	    "ChangeBatch": { '                                                      >> insert_rulset.json
echo    '	    "Comment": "",	'                                                       >> insert_rulset.json
echo    '	    "Changes": [	'                                                       >> insert_rulset.json
echo    '	        {	'                                                               >> insert_rulset.json
echo    '	            "Action": "UPSERT",	'                                           >> insert_rulset.json
echo    '	            "ResourceRecordSet": {	'                                       >> insert_rulset.json
echo    '	                "Name": "'$NAME'",	'                                       >> insert_rulset.json
echo    '	                "Type": "A",	'                                           >> insert_rulset.json
echo    '	                "TTL": 3600,	'                                                   >> insert_rulset.json
echo    '	                "ResourceRecords": [	'                                   >> insert_rulset.json
echo    '	                    {	'                                                   >> insert_rulset.json
echo    '	                        "Value": "'$CUR_IP'"	'                           >> insert_rulset.json
echo    '	                    }	'                                                   >> insert_rulset.json
echo    '	                ]	'                                                       >> insert_rulset.json
echo    '	            }	'                                                           >> insert_rulset.json
echo    '	        }	'                                                               >> insert_rulset.json
echo    '	    ]	'                                                                   >> insert_rulset.json
echo    '	        }	'                                                               >> insert_rulset.json
echo    '	}	'                                                                       >> insert_rulset.json

aws route53 change-resource-record-sets --cli-input-json file://insert_rulset.json

RETVAL=$?
if [ $RETVAL -eq 0 ]; then
    echo "Updated AWS IP successfully"
fi