Class: Backup

Inherits:
Object
  • Object
show all
Extended by:
LandscapeTurner::Helpers
Defined in:
lib/landscape-turner/backup.rb

Class Method Summary collapse

Methods included from LandscapeTurner::Helpers

get_landscape_databases, safe_system

Class Method Details

.backup_landscape(params = {}, paths, prefix) ⇒ Object 



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# File 'lib/landscape-turner/backup.rb', line 65

def self.backup_landscape(params = {}, paths, prefix)
  #check required arguments needed
  unless params[:snapshot_path]
    raise ArgumentError,  "Error: Must supply snapshot path with --snapshot-path"
  end
  destination = params[:snapshot_path] + "/"
  operate = !params[:no_op]

  #create the top-level destination path
  operate ? (FileUtils.mkdir(destination) rescue nil) : nil

  paths.each do |name, path|
    # Get path relative to landscape_prefix
    rel_path = Pathname.new(path).relative_path_from(Pathname.new(File.expand_path(prefix))).to_s

    # Make sure destination subdir exists
    dest_subdir = File.dirname "#{destination}/#{rel_path}"
    puts "Copying #{path} to #{dest_subdir}..."
    FileUtils.mkdir_p dest_subdir if operate
    FileUtils.cp_r(path, dest_subdir, :preserve => true) if operate
  end

  puts "Backing up Postgres databases.."
  (operate && !params[:no_db]) ? dump_landscape_databases(destination) : nil
  destination = params[:snapshot_path]
  puts "Compressing to file #{destination}.tar.gz"
  tgz_file = "#{File.basename(destination)}.tar.gz"
  operate ? safe_system("cd #{destination} && rm -f #{tgz_file} && tar -cpzf #{tgz_file} * && mv #{tgz_file} ..") : nil
  if operate && !check_consistent_tar(destination)
    raise "Tarball inconsistent with backup"
  end
  # remove the folder where we stored everything
  operate ? FileUtils.remove_dir(destination) : nil
  puts "Finished backing up to #{destination}"     
end

.backup_with_cli_args(args = ARGV) ⇒ Object 



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# File 'lib/landscape-turner/backup.rb', line 10

def self.backup_with_cli_args(args = ARGV)
  paths = {
    :x509_certificate  => "/etc/ssl/certs/landscape_server.pem",
    :ca_certificate    => "/etc/ssl/certs/landscape_server_ca.crt",
    :ssl_private_key   => "/etc/ssl/private/landscape_server.key",
    :postgresql_config => "/etc/postgresql/9.5/main",
    :apache_config     => "/etc/apache2/sites-available/landscape-server.conf",
    :hash_id_database  => "/var/lib/landscape/hash-id-databases",
    :landscape_dir     => "/etc/landscape",
    :landscape_default => "/etc/default/landscape-server",
  }

  new_args = Trollop.options(args) do
    opt :snapshot_path,         "Path to snapshot (required)",                             :type => String
    opt :override,              "Override paths with -o name1=path1",                      :type => :strings
    opt :disable,               "Disable paths with -d name",                              :type => :strings
    opt :no_db,                 "Disable database backup"
    opt :landscape_prefix,      "Path to prefix default landscape dirs (/var, /etc) with", :default => "/"
    opt :no_op,                 "No-op (dry run)"
    opt :sudo,                  "Program to use as sudo",                                  :default => "sudo"
    opt :x509_certificate,      "Path to landscape x509 certificate",                      :type => String
    opt :ca_certificate,        "Path to landscape CA certificatess" ,                     :type => String
    opt :ssl_private_key,       "Path to Landscape's private key",                         :type => String
    opt :postgresql_config,     "Path to landscape's Postgresql config",                   :type => String
    opt :apache_config,         "Path to Apache config",                                   :type => String
    opt :hash_id_database,      "Path to Hash ID databases",                               :type => String
    opt :landscape_dir,         "Path to landscape directory",                             :type => String
    opt :landscape_default,     "Path to default landscape server directory",              :type => String
    banner <<-USAGE
To override specific paths, use the optional arguments for the different paths listed above.
To disable specific paths for backup, use -d name1 -d name2
Overrides have higher priority than --landscape-prefix.
    USAGE
  end

  @@sudo = new_args[:sudo]

  prefix = new_args[:landscape_prefix]
  paths.each { |k, v| paths[k] = "#{prefix}#{v}" }

 path_args = new_args.clone
 [:snapshot_path, :override, :disable, :no_db, :landscape_prefix, :no_op, :sudo, :help!].each { |k| path_args.delete(k) }
 (path_args.keys).each do |o|
   raise "Unrecognized path  argument: #{o.inspect}!" unless paths[o]
   paths[o] = path_args[o]
 end 
 
  (new_args[:disable] || []).each do |d|
    raise "Unrecognized name argument: #{d.inspect}!" unless paths[key]
    paths.delete d.to_sym
  end

  backup_landscape(new_args, paths, prefix)
end

.check_consistent_tar(destination) ⇒ Object 



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# File 'lib/landscape-turner/backup.rb', line 110

def self.check_consistent_tar(destination)
  FileUtils.rm_rf("/tmp/tar_check")
  puts "cd #{File.dirname(destination)} && mkdir /tmp/tar_check && tar -xf #{File.basename(destination)}.tar.gz -C /tmp/tar_check"
  safe_system("cd #{File.dirname(destination)} && mkdir /tmp/tar_check && tar -xf #{File.basename(destination)}.tar.gz -C /tmp/tar_check")
  hash_folder1 = Open3.capture3("find #{destination} -type f 2>/dev/null -exec md5sum {} \;")
  hash_folder2 = Open3.capture3("find /tmp/tar_check -type f 2>/dev/null -exec md5sum {} \;")
  FileUtils.rm_rf("/tmp/tar_check")
  return hash_folder1 == hash_folder2     
end

.dump_landscape_databases(backup_destination) ⇒ Object 



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# File 'lib/landscape-turner/backup.rb', line 101

def self.dump_landscape_databases(backup_destination)
  FileUtils.mkdir("#{backup_destination}/postgresql_backup") rescue nil
  get_landscape_databases().each { |database_name| 
  # pg_dump dbname > outfile
  safe_system("cd /tmp && sudo -u postgres pg_dump #{database_name} > #{database_name}.bak")
  FileUtils.mv("/tmp/#{database_name}.bak","#{backup_destination}/postgresql_backup/")
  }  
end