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Bacula

TODO: UPDATE THIS

The CS Deptartment uses Bacula to manage backups. Bacula is a server-client system where the server initiates backups on a regular basis. The client (called file-daemon) is mostly a 'dumb' client, which brings up a number of challenges and quirks, explained below.

The backup server is located at backup.cs.ndsu.nodak.edu, but all user interaction with the backup server should take place via the Bacula client or by request to the system administrator.

Server

The backup server has the following specs:

CPUQuad-core Xeon2.33Ghz
RAMDDR28GB
HD640GB, 1TB 3x 640GB, 10x 1TB

Hard Drive Configuration

outdate There are 13 hard drives in the backup server, three 640GB drives for the operating system and other miscellaneous storage, and ten 1TB drives for main backup storage. The 10 drives are split into two [RAID 6|http://en.wikipedia.org/wiki/RAID#Standard_levels] arrays, to minimize array failures.

This server also hosts the hard drives for the archival array. This is from Dr. Nygard, but extra space has been used to store images from older hard drives. No one has ever requested an image, but having the images enables some of the faculty to be able to get rid of their old computers.

Client

The client runs on Linux, Windows, and Mac. The Linux client is the most robust, but the Windows client works well also.

If Bacula is installed by a CS admin/tech, then it should be configured to run backups automatically and no intervention should be required.

By default, Bacula will be configured to run a backup every night at 2 AM. If you turn your computer off at night we can arrange for the backup to be scheduled at a different time.

On a Windows client, by default, only your C: drive will be backed up. If you want other drives backed up, you will need to contact Adam.Helsene@ndsu.edu. Certain system files and folders will be excluded, this includes any 'Program Files' folders. If you'd like to change this, you can contact Adam.Helsene@ndsu.edu and he can modify these settings on the server.

In Windows, if you'd like to exclude a directory, place an empty file named 'bexclude' inside and that directory (and all subdirectories) will be ignored.

Linux

Ubuntu

The Ubuntu repositories lag behind as far as Bacula is concerned. The current Ubuntu version is 2.4x, while we are using Bacula version 3.x. The 2.4x client is not recommended for use with our server as it is not likely to work with a 3.x server.

Compiling the client from source is not too difficult, contact [Adam|Adam.Helsene@ndsu.edu] if you'd like assistance with this.

Red Hat-based

There are RPMs for Red Hat-style distros, and Bacula 3.x may even be available from your favorite repositories

Windows

Windows has two clients, a 32-bit version and 64-bit version. Both versions are fairly well tested and work very well with the installation scripts made by the bacula configuration generator.

See the backup processes page for Windows installation information and procedures.

Win XP

Windows XP, 32-bit has been well tested and generally works nicely with the scripts created by the configuration generator.

Win XP 64-bit

Untested - not supported

Vista 32-bit

Works well, much like Win XP 32-bit.

Vista 64-bit

Untested, contact Adam for setup assistance - not supported, should be similar to Win7

Win 7 32-bit

Untested, contact Adam for setup assistance - not supported

Win 7 64-bit

Windows 7 has had a number of directory structure and security improvement. While is is very much welcome, it complicates the Bacula client installation significantly.

Because of this, the installation for Bacula on Windows 7 has configuration files and working directories in c:\programdata\bacula instead of c:\program files\bacula\.

The installation generator should produce appropriate install scripts and configs.

Mac

Bacula 5.0.1 has been compiled and installed on a mac, unfortunately there is a compilation error in findlib. This is a 64-bit conversion error of some form and so a 32-bit compile is required. This is unfortunate but should work just fine.

The following was used to compile this for 32-bit systems, it is known to work for 10.6(?)

CFLAGS="-arch i386 -g -O0" CXXFLAGS="$CFLAGS" LDFLAGS="-arch i386" ./configure --enable-client-only 
make
sudo make install

Using the Console

Along with the Bacula client, you will get the bconsole program (as well as bwx-console for 32-bit windows). The console program allows you to queue a backup job or run a restore. Below is a list of some of the commands/functions that you may want to use.

Running a Backup

To run a backup using your Bacula client, first execute

Linux:
bconsole

–or–

Windows:
c:\program files\bacula\bconsole.exe

 -or-

c:\program files\bacula\bin\bconsole.exe

depending on your client version.

Once bconsole has connected back to the server, you need to execute:

setip

This tells the server to set your client's IP address to your current IP. This is necessary on all non-servers as we are given dynamic IPs on our campus network.

You can then run your backup using the 'run' command, you will then get a prompt similar to one below.

*run
A job name must be specified.
The defined Job resources are:
     1: 123456-lastname
     2: 123457-lastname_lab
Select Job resource (1-2):

Here you select the client you would like to back up. Most commonly, you will have access to a single Job, and it will be automatically selected.

You will then see the details of the job, most of these will not be of much importance to you, and are server-side configuration settings.

Run Backup job
JobName:  123456-lastname
Level:    Incremental
Client:   123456-lastname
FileSet:  StandardWindows
Pool:     WorkstationIncr (From Job resource)
Storage:  WorkstationIncr (From Pool resource)
When:     2009-12-07 15:29:08
Priority: 10
OK to run? (yes/mod/no):

If all is well, type 'yes', hit enter and your backup will be put in the queue.

Running a Restore

Start bconsole

To run a backup using your Bacula client, first execute

Linux:
bconsole

–or–

Windows:
c:\program files\bacula\bconsole.exe

 -or-

c:\program files\bacula\bin\bconsole.exe

depending on your client version.

Telling the Server Your IP

Once bconsole has connected back to the server, you need to issue the setip command:

setip

This tells the server to set your client's IP address to your current IP. This is necessary on all non-servers as we are given dynamic IPs on our campus network.

Choosing Which Jobs to Restore

You can then run your restore by using the restore command, you will then be given a very large number of options so that you can choose from.

*restore

First you select one or more JobIds that contain files
to be restored. You will be presented several methods
of specifying the JobIds. Then you will be allowed to
select which files from those JobIds are to be restored.

To select the JobIds, you have the following choices:
     1: List last 20 Jobs run
     2: List Jobs where a given File is saved
     3: Enter list of comma separated JobIds to select
     4: Enter SQL list command
     5: Select the most recent backup for a client
     6: Select backup for a client before a specified time
     7: Enter a list of files to restore
     8: Enter a list of files to restore before a specified time
     9: Find the JobIds of the most recent backup for a client
    10: Find the JobIds for a backup for a client before a specified time
    11: Enter a list of directories to restore for found JobIds
    12: Select full restore to a specified JobId
    13: Cancel
Select item:  (1-13):

Selecting the Most Recent Backup

Selecting option '5' here will give you the most recent files for a given client. If you have access to multiple clients, you will be prompted to choose one of them, otherwise the current client will be chosen. This is the computer that originally had the files. (You can choose an optional destination client later, allowing you to move files from one computer to another).

Select item:  (1-13): 5
Defined Clients:
     1: 123456-lastname
     2: 123457-lastname_lab
Select the Client (1-2):

Selecting an Older Version of a File

If you would like a specific version of a file, you can specify a point in time and Bacula will apply the incremental backups to reconstruct your files as of that time.

Select option #6 and you will be given a prompt for a time:

Select item:  (1-13): 6
The restored files will the most current backup
BEFORE the date you specify below.

Enter date as YYYY-MM-DD HH:MM:SS :

After Choosing Jobs

After selecting the jobs you would like restored, the system then builds the most recent version of your file set. This will look something like:

Select the Client (1-2): 1
Automatically selected FileSet: 123456-lastnameFileSet
+-------+-------+----------+---------------+---------------------+------------+
| JobId | Level | JobFiles | JobBytes      | StartTime           | VolumeName |
+-------+-------+----------+---------------+---------------------+------------+
| 2,307 | F     |   58,968 | 2,686,111,462 | 2009-12-05 02:37:18 | Full-0278  |
| 2,356 | I     |       58 |   164,984,258 | 2009-12-06 02:01:02 | Incr-0277  |
| 2,381 | I     |       10 |     4,494,735 | 2009-12-07 02:01:01 | Incr-0277  |
| 2,410 | I     |       15 |     4,690,608 | 2009-12-08 02:01:02 | Incr-0277  |
+-------+-------+----------+---------------+---------------------+------------+
You have selected the following JobIds: 2307,2356,2381,2410

Building directory tree for JobId(s) 2307,2356,2381,2410 ...  ++++++++++++++++++++++++++++++++++++++++++++++
54,326 files inserted into the tree.

This display is informational, to show which jobs are included in the restore.

Choosing Files to be Restored

You will then be given the following prompt, which will allow you to choose which files to restore:

You are now entering file selection mode where you add (mark) and
remove (unmark) files to be restored. No files are initially added, unless
you used the "all" keyword on the command line.
Enter "done" to leave this mode.

cwd is: /
$ 

From this prompt, you can use common filesystem navigation commands, such as 'ls' or 'dir'.

Caution: In Windows, you need to use forward slashes instead of backslashes as the directory delimiter! This is because Bacula stores everything using UNIX-style paths

To select/deselect directories and files for restoration, use the 'mark' and 'unmark' commands.

The list of commands usable in file selection mode are listed below

CommandDescription
addadd dir/file to be restored recursively, wildcards allowed
cdchange current directory
countcount marked files in and below the cd
deletedelete dir/file to be restored recursively in dir
dirlong list current directory, wildcards allowed
doneleave file selection mode
estimateestimate restore size
exitsame as done command
findfind files, wildcards allowed
helpprint help
lslist current directory, wildcards allowed
lsmarklist the marked files in and below the cd
markmark dir/file to be restored recursively, wildcards allowed
markdirmark directory name to be restored (no files)
pwdprint current working directory
unmarkunmark dir/file to be restored recursively in dir
unmarkdirunmark directory name only no recursion
quitquit and do not do restore
?print help

After marking files/directories that you'd wish to restore, use the 'done' command.

Final Restore Options

You will then be shown a summary of your restore job. You will still need to change one or more options before your restore is ready!

Run Restore job
JobName:         RestoreFiles
Bootstrap:       /var/lib/bacula3/csbackup.restore.15.bsr
Where:           /tmp/bacula-restores
Replace:         ifnewer
FileSet:         123456-lastnameFileSet
Backup Client:   123456-lastname
Restore Client:  123456-lastname
Storage:         WorkstationFull
When:            2009-12-08 11:08:30
Catalog:         MyCatalog
Priority:        10
Plugin Options:  *None*
OK to run? (yes/mod/no): 

You will need to answer 'mod' to modify one or more options.

answering with 'mod' will bring you the following list:

OK to run? (yes/mod/no): mod
Parameters to modify:
     1: Level
     2: Storage
     3: Job
     4: FileSet
     5: Restore Client
     6: When
     7: Priority
     8: Bootstrap
     9: Where
    10: File Relocation
    11: Replace
    12: JobId
    13: Plugin Options
Select parameter to modify (1-13): 

(OPTIONAL) #5: 'Restore Client': Restoring Files to a Different Computer

If you are working with multiple clients, such as restoring to a computer different from the one the files were originally backed up from, then you will also want to change option #5, 'Restore Client'. You'll be prompted with a list of clients, select the one you would like to restore files to.

#9: 'Where': Change Restore Target on Local Filesystem

By default, the system will try to restore your files to '/tmp/bacula-restores/', of course this is not suitable for Windows systems, so you will need to change option #9, 'Where'. This defines the location on your local filesystem where you would like your files to be written to. Remember to use forward slashes in Windows.

When Bacula tries to restore a file that already exists, by default, it will keep the newer version (determined by timestamp). Because of this, it is possible to set the 'Where' variable to the root of a drive, so Bacula will restore to where the file originally existed. Please use caution when restoring files using the root as the destination of your files

(OPTIONAL) #11: 'Replace': Modify Default Overwrite Behavior

When restoring a file onto an already existing file, the default behavior is for Bacula to compare timestamps and keep the newest version. If you'd like to change this behavior, this is the place to do so. You will be presented with 4 options:

Select parameter to modify (1-13): 11
Replace:
     1: always
     2: ifnewer
     3: ifolder
     4: never
Select replace option (1-4): 
OptionBehavior
alwaysAlways replace the existing file with the version from the backup system
ifnewer (default)Replace the existing file if the one from the backup system is newer than the existing file
ifolderReplace the existing file if the one from the backup system is older than the existing file
neverNever replace existing files

Other Options

Changing other options will almost certainly cause your restore job to fail. They're mostly useful for administrative use and special cases.

The Short Version

Run the following commands in bconsole:

setip
restore
5

then choose backup client if prompted

mark files to be restored, see http://wiki.cs.ndsu.nodak.edu/admin/software/bacula#choosing_which_jobs_to_restore for more detail on marking files

mod
9

enter local directory to restore files to.

If you would like to restore to a different computer:

    mod
    5
    then choose destination client

Finally, confirm your restore options and enter

yes
admin/software/bacula.txt · Last modified: 2017/03/21 22:39 by localadmin