家のIPをcronでRoute53に登録する便利スクリプト

cron-upsert-route53-record.sh

#!/bin/sh

ZONE_ID="XXXX"
HOSTNAME="example.com"
IPADDR=`curl http://ipecho.net/plain`
TEMPFILE='/tmp/route53-record.json'

cat << EOS > $TEMPFILE
{
  "Changes": [
    {
      "Action": "UPSERT",
      "ResourceRecordSet": {
        "Name": "$HOSTNAME",
        "Type": "A",
        "TTL": 120,
        "ResourceRecords": [
          {
            "Value": "$IPADDR"
          }
        ]
      }
    }
  ]
}
EOS

aws route53 change-resource-record-sets  --hosted-zone-id $ZONE_ID --change-batch file://$TEMPFILE

rm -rf $TEMPFILE