Bacula

Bacula is a backup program enabling you to backup, restore, and verify data across your network. There are Bacula clients for Linux, Windows, and Mac OSX. Making it a cross platform network wide solution.

Overview

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

  • 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.

Instal·lació

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.

Configuration

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"
}
[Nota]

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
[Nota]

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.

Localhost Backup

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 = "Cv70F6pf1t6pBopT4vQOnigDrR0v3LT3Cgkiyj"
      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 a 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.

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