EC2上のファイルをinstance_idでフォルダ分けしてS3にバックアップ

#!/bin/sh
source /root/.bash_profile
MONTH=`date +%Y%m`
TODAY=`date +%Y%m%d`
BUCKET_NAME=yourbucket
INSTANCE_ID=""
if [ ! -f /tmp/instance-id ]; then
        INSTANCE_ID=`curl -s http://169.254.169.254/latest/meta-data/instance-id`
        echo -n $INSTANCE_ID > /etc/instance-id
else
        INSTANCE_ID=`cat /etc/instance-id`
fi

if [ ! -d /tmp/backup-logs ]; then
        mkdir /tmp/backup-logs
fi
DEST_DIR=/tmp/backup-logs/${MONTH}/${TODAY}/${INSTANCE_ID}
MOUNT_COUNT=`mount -l | grep "/tmp/backup-logs" | wc -l`
if [ ${MOUNT_COUNT} -ne 1 ]; then
        umount -l /tmp/backup-logs > /dev/null 2>&1
        s3fs ${BUCKET_NAME} /tmp/backup-logs
fi

mkdir -p ${DEST_DIR}
cp -frpv /file/to/backup ${DEST_DIR}