Amazon S3 Backup Example

db_backup.rb

mysql_username = "backup"
mysql_password = ""
databases = [ 'db1', 'sb2' ]
temp_directory = "/mnt/storage/backups"
s3_access_key_id = 'xxxx'
s3_secret_access_key = 'xxxx'
s3_bucket_name = 'database-bucket'

require 'rubygems'
require 'aws/s3'

databases.each do |db|
  now = Time.now.strftime("%Y-%m-%d-%H-%M-%S")
  filename = "#{db}-#{now}.sql"
  puts "Dumping #{db} to SQL file"
  `mysqldump --user=#{mysql_username} --password=#{mysql_password} #{db} > #{temp_directory}/#{db}-#{now}.sql`
  puts "...done\n\n"
  puts "Gzipping #{db}\n"
  `gzip #{temp_directory}/#{db}-#{now}.sql`
  puts "...done\n\n"
  filename = filename + ".gz"
  
  puts "Sending #{filename} to Amazon S3\n"
  AWS::S3::Base.establish_connection!(
    :access_key_id        => s3_access_key_id,
    :secret_access_key    => s3_secret_access_key
  )
  
  AWS::S3::S3Object.store(
    filename,
    File.open(temp_directory + "/" + filename),
    s3_bucket_name,
    :content_type => 'application/x-gzip',
    :access => :private
  )
  
  if AWS::S3::Service.response.success?
    # Remove the file on the local filesystem
    FileUtils.rm temp_directory + "/" + filename
    puts "...done\n\n"
  else
    puts "There was a problem uploading " + full_filename
  end
end