Arch Linux DokuWiki backup to Amazon S3

backup_dokuwiki

#!/usr/bin/env ruby

# DokuWiki backup for Arch Linux; daily rotating logs, weekly permanent log.
# Fix the Amazon credentials and bucket name, and if desired, the wiki path.

# Copied with modifications from:
# http://www.dokuwiki.org/tips:backuptos3

# Save this script to: /etc/cron.daily/backup-dokuwiki

require 'rubygems'
require 'aws/s3'

# Create a tar file with the wiki data files.
wiki_data = '/var/lib/dokuwiki'
target_dirs = ['attic', 'media', 'meta', 'pages']
tar_dirs = ''
target_dirs.each do |dir|
  tar_dirs += wiki_data + '/' + dir + ' '
end
weekday = Time.now.wday
backup_filename = "/tmp/dokuwiki-#{weekday}.tar"
`tar -cvf #{backup_filename} #{tar_dirs}`
`gzip #{backup_filename}`
backup_filename += '.gz'

# If it is Sunday, archive a permanent backup.
permanent_backup = nil
if Time.now.wday == 0  # Hardwired but what the hey...
  timestamp = Time.now.strftime("%Y-%m-%d")
  permanent_backup = "dokuwiki-#{timestamp}.tar.gz"
end

# Put the backup file in the S3 bucket under backups.

AWS::S3::Base.establish_connection!(
  :access_key_id         => 'AMAZON ACCESS KEY HERE',
  :secret_access_key     => 'AMAZON SECRET ACCESS KEY HERE'
)
bucket_name = 'BUCKET NAME HERE'
begin
  AWS::S3::Bucket.find( bucket_name )
  AWS::S3::S3Object.store(
    File.basename(backup_filename),
    open(backup_filename),
    bucket_name
  )
  puts "#{backup_filename} was successfully backed up to Amazon S3"
  if permanent_backup
    AWS::S3::S3Object.store(
      permanent_backup,
      open(backup_filename),
      bucket_name
    )
    puts "#{permanent_backup} (weekly archive) was successfully backed up to Amazon S3"
  end

rescue
  puts "Unable to backup file to S3"
end