Change an A record of a domain managed by AWS Route53.

aws_route53_upsert_a_record.sh

#!/bin/bash
set -ex

[ $# -ne 3 ] && echo "Usage $0 <your zone id> <your domain> <your ip>" && exit 1

MY_ZONE_ID=$1
MY_DOMAIN=$2
MY_IP=$3

TMPFILE=$(mktemp /tmp/${MY_DOMAIN}_upsert_${MY_IP}.XXXXXX)
cat <<-EOF > ${TMPFILE}
{
  "Comment": "Update IP via awscli",
  "Changes": [
    {
      "Action": "UPSERT",
      "ResourceRecordSet": {
        "Name": "${MY_DOMAIN}",
        "Type": "A",
        "TTL": 30,
        "ResourceRecords": [
          {
            "Value": "${MY_IP}"
          }
        ]
      }
    }
  ]
}
EOF

aws route53 change-resource-record-sets --hosted-zone-id /hostedzone/${MY_ZONE_ID} --change-batch file://${TMPFILE}
aws route53 list-resource-record-sets --hosted-zone-id /hostedzone/${MY_ZONE_ID} | jq ".[][] | select(.Name==\"${MY_DOMAIN}\")"