# 메타데이터 정보 가져오기
TOKEN=$(curl -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600")
INSTANCE_ID=$(curl -H "X-aws-ec2-metadata-token: $TOKEN" -s http://169.254.169.254/latest/meta-data/instance-id)
PRIVATE_IP=$(curl -H "X-aws-ec2-metadata-token: $TOKEN" -s http://169.254.169.254/latest/meta-data/local-ipv4)
AZ=$(curl -H "X-aws-ec2-metadata-token: $TOKEN" -s http://169.254.169.254/latest/meta-data/placement/availability-zone)

# 필수 내용으로 config.txt 작성
cat <<EOF > /var/www/html/config.txt
INSTANCE_ID=$INSTANCE_ID
PRIVATE_IP=$PRIVATE_IP
AVAILABILITY_ZONE=$AZ
DEPLOYED_AT=$(date '+%Y-%m-%d %H:%M:%S')
HOSTNAME=$(hostname)
EOF