Register private hosted zone

userdata.sh

#!/bin/bash

# Register private hosted zone
# @see [aws 起動毎にローカル IP をローカル DNS (Route53) の A レコードに突っ込む - Qiita](https://qiita.com/selfnavi/items/a731514cd8174d86caf5)
INSTANCE_ID=`curl http://169.254.169.254/latest/meta-data/instance-id | sed -e 's/^i-//g'`
IPV4=`curl http://169.254.169.254/latest/meta-data/local-ipv4`
HOSTNAME=`echo "app-:instance-id:.example.local" | sed -e "s/:instance-id:/${INSTANCE_ID}/g"`
HOSTED_ZONE_ID=<hosted-zone-id>

cat <<JSON > /root/register-route53.json
{
  "Comment": "${HOSTNAME}",
  "Changes": [
    {
      "Action": "UPSERT",
      "ResourceRecordSet": {
        "Name": "${HOSTNAME}",
        "Type": "A",
        "TTL" : 3600 ,
        "ResourceRecords": [{
          "Value": "${IPV4}"
        }]
      }
    }
  ]
}
JSON

aws route53 change-resource-record-sets --hosted-zone-id ${HOSTED_ZONE_ID} --change-batch file:///root/register-route53.json