几年以后，我用 Go 写了个类似的工具 GoBackup，用来代替 backup

https://gobackup.github.io

服务器上面你可能需要备份数据库、配置文件、甚至上传文件。 每个项目中反复写备份脚本很麻烦吧，试试 Backup 这个 gem。 他可以帮你...

1. 备份数据库：
   • MySQL
   • PostgreSQL
   • MongoDB
   • Redis
2. 备份文件或者目录...
3. 备份日志文件...
4. 备份到:
   • S3
   • Dropbox
   • SFTP
   • FTP
   • 当然还有本地目录
5. 并且你还可以选择 gzip 或者其他的方式压缩文件
6. 备份完成以后还可以通过 Twitter, Email 等方式提醒
7. 它不仅仅只是用来备份 Ruby 项目的服务器，可以适用任何 Linux 或 Mac，任何数据，你可以用来做本地定期备份
8. 用起来就是这么简单的定制文件，在配合 Crontab 定时执行就可以了：

Backup::Model.new(:sample_backup, 'A sample backup configuration') do

  split_into_chunks_of 4000

  database MySQL do |database|
    database.name               = 'my_sample_mysql_db'
    database.username           = 'my_username'
    database.password           = 'my_password'
    database.skip_tables        = ['logs']
    database.additional_options = ['--single-transaction', '--quick']
  end

  database MongoDB do |database|
    database.name             = 'my_sample_mongo_db'
    database.only_collections = ['users', 'events', 'posts']
  end

  archive :user_avatars do |archive|
    archive.add '/var/apps/my_sample_app/public/avatars'
  end

  archive :logs do |archive|
    archive.add     '/var/apps/my_sample_app/logs/production.log'
    archive.add     '/var/apps/my_sample_app/logs/newrelic_agent.log'
    archive.add     '/var/apps/my_sample_app/logs/other/'
    archive.exclude '/var/apps/my_sample_app/logs/other/exclude-this.log'
  end

  compress_with Gzip do |compression|
    compression.best = true
  end

  store_with SFTP, "Server A" do |server|
    server.username = 'my_username'
    server.password = 'secret'
    server.ip       = 'a.my-backup-server.com'
    server.port     = 22
    server.path     = '~/backups'
    server.keep     = 25
  end

  store_with SFTP, "Server B" do |server|
    server.username = 'my_username'
    server.password = 'secret'
    server.ip       = 'b.my-backup-server.com'
    server.port     = 22
    server.path     = '~/backups'
    server.keep     = 25
  end

  store_with S3 do |s3|
    s3.access_key_id      = 'my_access_key_id'
    s3.secret_access_key  = 'my_secret_access_key'
    s3.region             = 'us-east-1'
    s3.bucket             = 'my_bucket/backups'
    s3.keep               = 20
  end

  sync_with S3 do |s3|
    s3.access_key_id     = "my_access_key_id"
    s3.secret_access_key = "my_secret_access_key"
    s3.bucket            = "my-bucket"
    s3.path              = "/backups"
    s3.mirror            = true

    s3.directories do |directory|
      directory.add "/var/apps/my_app/public/videos"
      directory.add "/var/apps/my_app/public/music"
    end
  end

  notify_by Mail do |mail|
    mail.on_success = false
    mail.on_warning = true
    mail.on_failure = true
  end

  notify_by Twitter do |tweet|
    tweet.on_success = true
    tweet.on_warning = true
    tweet.on_failure = true
  end

end

项目地址： https://github.com/backup/backup

Update 2017-03

此方式 Ruby China 一直在使用，4 年里帮助我们确保有数据的备份保障，也曾经好几次帮助修复了数据。

Ruby China 目前的备份文件（未压缩）500M 左右，是存储在 UpYun 上的，保持存储两周的文件。