Bacula

Bacula - это программа резервного копирования, позволяющая вам сохранять, восстанавливать и проверять данные через вашу сеть. Для Bacula существуют клиенты под Linux, Windows и Mac OS X, превращая ее в кросс-платформенное сетевое решение.

Bacula is made up of several components and services used to manage which files to backup and backup locations:

  Bacula Director: a service that controls all backup, restore, verify, and archive operations.

  Bacula Console: an application allowing communication with the Director. There are three versions of the Console:

      Text based command line version.

      Gnome based GTK+ Graphical User Interface (GUI) interface.

      wxWidgets GUI interface.

  Bacula File: also known as the Bacula Client program. This application is installed on machines to be backed up, and is responsible for the data requested by the Director.

  Bacula Storage: the programs that perform the storage and recovery of data to the physical media.

  Bacula Catalog: is responsible for maintaining the file indexes and volume databases for all files backed up, enabling quick location and restoration of archived files. The Catalog supports three different databases MySQL, PostgreSQL, and SQLite.

  Bacula Monitor: allows the monitoring of the Director, File daemons, and Storage daemons. Currently the Monitor is only available as a GTK+ GUI application.

These services and applications can be run on multiple servers and clients, or they can be installed on one machine if backing up a single disk or volume.

If using MySQL or PostgreSQL as your database, you should already have the services available. Bacula will not install them for you.

There are multiple packages containing the different Bacula components. To install Bacula, from a terminal prompt enter:

sudo apt-get install bacula

By default installing the bacula package will use a MySQL database for the Catalog. If you want to use SQLite or PostgreSQL, for the Catalog, install bacula-director-sqlite3 or bacula-director-pgsql respectively.

During the install process you will be asked to supply credentials for the database administrator and the bacula database owner. The database administrator will need to have the appropriate rights to create a database, see MySQL for more information.

Bacula configuration files are formatted based on resources comprising of directives surrounded by “{}” braces. Each Bacula component has an individual file in the /etc/bacula directory.

The various Bacula components must authorize themselves to each other. This is accomplished using the password directive. For example, the Storage resource password in the /etc/bacula/bacula-dir.conf file must match the Director resource password in /etc/bacula/bacula-sd.conf.

By default the backup job named Client1 is configured to archive the Bacula Catalog. If you plan on using the server to backup more than one client you should change the name of this job to something more descriptive. To change the name edit /etc/bacula/bacula-dir.conf:

# # Define the main nightly save backup job # By default, this job will back up to disk in Job {

Name = "BackupServer"
JobDefs = "DefaultJob"
Write Bootstrap = "/var/lib/bacula/Client1.bsr"

}

The example above changes the job name to BackupServer matching the machine's host name. Replace “BackupServer” with your appropriate hostname, or other descriptive name.

The Console can be used to query the Director about jobs, but to use the Console with a non-root user, the user needs to be in the bacula group. To add a user to the bacula group enter the following from a terminal:

sudo adduser $username bacula

Replace $username with the actual username. Also, if you are adding the current user to the group you should log out and back in for the new permissions to take effect.

This section describes how to backup specified directories on a single host to a local tape drive.

  First, the Storage device needs to be configured. Edit /etc/bacula/bacula-sd.conf add:

  Device {
    Name = "Tape Drive"
    Device Type = tape
    Media Type = DDS-4
    Archive Device = /dev/st0
    Hardware end of medium = No;
    AutomaticMount = yes;               # when device opened, read it
    AlwaysOpen = Yes;
    RemovableMedia = yes;
    RandomAccess = no;
    Alert Command = "sh -c 'tapeinfo -f %c | grep TapeAlert'"
  }

  The example is for a DDS-4 tape drive. Adjust the “Media Type” and “Archive Device” to match your hardware.

  You could also uncomment one of the other examples in the file.

  After editing /etc/bacula/bacula-sd.conf the Storage daemon will need to be restarted:

  sudo /etc/init.d/bacula-sd restart

  Now add a Storage resource in /etc/bacula/bacula-dir.conf to use the new Device:

  # Definition of "Tape Drive" storage device
  Storage {
    Name = TapeDrive
    # Do not use "localhost" here    
    Address = backupserver               # N.B. Use a fully qualified name here
    SDPort = 9103
    Password = "Cv70F6pf1t6pBopT4vQOnigDrR0v3LT3Cgkiyjc"
    Device = "Tape Drive"
    Media Type = tape
  }

  The Address directive needs to be the Fully Qualified Domain Name (FQDN) of the server. Change backupserver to the actual host name.

  Also, make sure the Password directive matches the password string in /etc/bacula/bacula-sd.conf.

  Create a new FileSet, which will determine what directories to backup, by adding:

  # LocalhostBacup FileSet.
  FileSet {
    Name = "LocalhostFiles"
    Include {
      Options {
        signature = MD5
        compression=GZIP
      }
      File = /etc
      File = /home
    }
  }

  This FileSet will backup the /etc and /home directories. The Options resource directives configure the FileSet to create an MD5 signature for each file backed up, and to compress the files using GZIP.

  Next, create a new Schedule for the backup job:

  # LocalhostBackup Schedule -- Daily.
  Schedule {
    Name = "LocalhostDaily"
    Run = Full daily at 00:01
  }

  The job will run every day at 00:01 or 12:01 am. There are many other scheduling options available.

  Finally create the Job:

  # Localhost backup.
  Job {
    Name = "LocalhostBackup"
    JobDefs = "DefaultJob"
    Enabled = yes
    Level = Full
    FileSet = "LocalhostFiles"
    Schedule = "LocalhostDaily"
    Storage = TapeDrive
    Write Bootstrap = "/var/lib/bacula/LocalhostBackup.bsr"
  }  

  The job will do a Full backup every day to the tape drive.

  Each tape used will need to have a Label. If the current tape does not have a label Bacula will send an email letting you know. To label a tape using the Console enter the following from a terminal:

  bconsole

  At the Bacula Console prompt enter:

  label

  You will then be prompted for the Storage resource:

  Automatically selected Catalog: MyCatalog
  Using Catalog "MyCatalog"
  The defined Storage resources are:
       1: File
       2: TapeDrive
  Select Storage resource (1-2):2

  Enter the new Volume name:

  Enter new Volume name: Sunday
  Defined Pools:
       1: Default
       2: Scratch

  Replace Sunday with the desired label.

  Now, select the Pool:

  Select the Pool (1-2): 1
  Connecting to Storage daemon TapeDrive at backupserver:9103 ...
  Sending label command for Volume "Sunday" Slot 0 ...

Congratulations, you have now configured Bacula to backup the localhost to an attached tape drive.

  For more Bacula configuration options refer to the Bacula User's Manual

  The Bacula Home Page contains the latest Bacula news and developments.

  Also, see the Bacula Ubuntu Wiki page.