Created
April 19, 2010 21:17
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# for cron job | |
# 0 3 * * * cd /path/to/app/ && /usr/local/bin/rake db:backup RAILS_ENV=production | |
require 'find' | |
namespace :db do | |
desc "Backup the database to a file. Options: DIR=base_dir RAILS_ENV=production MAX=20" | |
task :backup => [:environment] do | |
datestamp = Time.now.strftime("%Y-%m-%d_%H-%M-%S") | |
base_path = ENV["DIR"] || "db" | |
backup_base = File.join(base_path, 'backup') | |
backup_folder = File.join(backup_base, datestamp) | |
backup_file = File.join(backup_folder, "#{RAILS_ENV}_dump.sql.gz") | |
FileUtils.makedirs(backup_folder) | |
db_config = ActiveRecord::Base.configurations[RAILS_ENV] | |
sh "mysqldump -u #{db_config['username'].to_s} #{'-p' if db_config[ | |
'password']}#{db_config['password'].to_s} --opt #{db_config['database']} | | |
gzip -c > #{backup_file}" | |
dir = Dir.new(backup_base) | |
all_backups = (dir.entries - ['.', '..']).sort.reverse | |
puts "Created backup: #{backup_file}" | |
max_backups = ENV["MAX"] || 20 | |
unwanted_backups = all_backups[max_backups.to_i..-1] || [] | |
for unwanted_backup in unwanted_backups | |
FileUtils.rm_rf(File.join(backup_base, unwanted_backup)) | |
puts "deleted #{unwanted_backup}" | |
end | |
puts "Deleted #{unwanted_backups.length} backups, #{all_backups.length - | |
unwanted_backups.length} backups available" | |
end | |
end |
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