Simple script to backup your files and MySql database to Amazon S3

amazon_s3_backup.sh

#!/bin/bash

############# More information #############
# http://drola.si/backing-up-to-amazon-s3/ #
############################################

EC2_ACCESS_KEY=YOUR_ACCESS_KEY
EC2_SECRET_KEY=YOUR_SECRET_ACCESS_KEY
BUCKET_NAME="NAME_OF_THE_BUCKET"
MYSQL_PASSWORD="MYSQL_ROOT_PASSWORD"
NOW=$(date +"%Y-%m-%d_%H-%M")
TMPDIR="/var/backups/$NOW/" #temporary directory for storing archives

add_md5_hash() {
  if [ -z "$1" ]
  then
    echo "You must pass filename."
    return -1
  fi
  echo "Calculating hash..."
  md5sum $1 >> "$1.md5"
  echo "Uploading hash..."
  s3put "$BUCKET_NAME/$1.md5" "$1.md5"
}

backup_dir() {
  if [ -z "$1" ]
  then
    echo "You must pass directory name."
    return -1
  fi
  DIR="$1"
  FILENAME="$NOW${1//\//_}.tar.gz"

  echo "Backing up $1"
  mkdir -p "$TMPDIR"
  cd "$TMPDIR"
  echo "Creating temporary archive $FILENAME"
  tar -zcf "$FILENAME" "$1"
  echo "Uploading to AWS ( $BUCKET_NAME )"
  s3put "$BUCKET_NAME/$FILENAME" "$FILENAME"
  add_md5_hash $FILENAME
}

backup_mysql_database() {
  mkdir -p "$TMPDIR"
  cd "$TMPDIR"
  FILENAME="${NOW}_db_$1.sql"
  echo "Creating temporary file $FILENAME"
  mysqldump -u root -p$MYSQL_PASSWORD --database $1 >> $FILENAME
  echo "Uploading to AWS ( $BUCKET_NAME )"
  s3put "$BUCKET_NAME/$FILENAME" "$FILENAME"
  add_md5_hash $FILENAME
}

backup_mysql_server() {
  mkdir -p "$TMPDIR"
  cd "$TMPDIR"
  FILENAME="${NOW}_localhost.sql"
  echo "Creating temporary file $FILENAME"
  mysqldump -u root -p$MYSQL_PASSWORD --all-databases >> $FILENAME
  echo "Uploading to AWS ( $BUCKET_NAME )"
  s3put "$BUCKET_NAME/$FILENAME" "$FILENAME"
  add_md5_hash $FILENAME
}

#Examples:
backup_dir "/PATH/TO/THE/DIRECTORY/YOU/WANT/TO/BACKUP"
backup_mysql_server #if you want to backup all databases
backup_mysql_database "DB_NAME" #if you want to backup single database