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Amanda Backup Using Virtual Tape on Ubuntu

sahab — Fri, 28 May 2010 08:29:11 +0000

Amanda Client

Here We are using two clients one is backup.ubuntulinux.co.in and another one is the same amdanda server ubuntulinux.co.in.

Install AMANDA client

Install the AMANDA client app

sudo apt-get install amanda-client

Create necessary amanda directory ( It is not needed for the server ubuntulinux.co.in)

sudo mkdir -p -m 770 /etc/amanda

Change owner

sudo chown -R backup.backup /etc/amanda

Become the backup user

su backup

Create an excludes file

touch /etc/amanda/exclude.gtar

Edit /etc/amandahosts to allow server to connect to client machine for backups

localhost backup
backup.ubuntulinux.co.in backup
ubuntulinux.co.in backup

Create xinetd amanda entry

sudo vim /etc/xinetd.d/amanda

Edit the file, mine looks like

# default: on
#
# description: Amanda services for Amanda client.
#
service amanda
{
bind               = backup.ubuntulinux.co.in
socket_type = dgram
protocol         = udp
wait                 = yes
user               = backup
group              = backup
groups            = yes
server          = /usr/lib/amanda/amandad
server_args      = -auth=bsd amdump
disable          = no
}

Each of these lines is very important. The “bind” line will probably not be necessary for most configurations – this is in place because I have 2 different IP addresses binding to the same device (eth0 aliases).

Restart xinetd

sudo /etc/init.d/xinetd restart

Edit /etc/services to look like

#
# Amanda Services
#
amanda          10080/udp
amanda          10080/tcp
kamanda         10081/udp
kamanda         10081/tcp
amandaidx       10082/tcp
amidxtape       10083/tcp

Make sure your /etc/inetd.conf looks like

amanda dgram udp wait backup /usr/sbin/tcpd /usr/lib/amanda/amandad

On the Server

Verify Configuration
Run amcheck on Server to verify configuration files, connections, etc lgoin as backup user
Code:

amcheck DailySet1
Output looks like
Cod

backup@ubuntulinux:~$ amcheck DailySet1
Amanda Tape Server Host Check
Holding disk /dumps/amanda: 4478364 KB disk space available, using 4375964 KB
slot 2: read label `DailySet1-02′, date `X’
NOTE: skipping tape-writable test
Tape DailySet?1-02 label ok
Server check took 0.112 seconds
Amanda Backup Client Hosts Check
Client check: 2 host checked in 0.017 seconds, 0 problems found
(brought to you by Amanda 2.5.1p3)

For taking the backup

amdump Dailyset1

Amrecover

amrecover — Amanda index database browser

Amrecover browses the database of Amanda index files to determine which tapes contain files to recover. Furthermore, it is able to recover files.

In order to restore files in place, you must invoke amrecover from the root of the backed up filesystem, or use lcd to move into that directory, otherwise a directory tree that resembles the backed up filesystem will be created in the current directory. See the examples below for details.

Amrecover should be run as root user.

Amrecover will the read the amanda-client.conf file and the config/amanda-client.conf file. If no configuration name is supplied on the command line, Amrecover will try the compiled-in default configuration, usually DailySet?1.

Edit the following lines in amanda-client.conf

conf “DailySet1″ # your config name

index_server “ubuntulinux.co.in” # your amindexd server
tape_server “ubuntulinux.co.in” # your amidxtaped server
tapedev “file:/amandabackup/DailySet?1/slots” # your tape device

Example
root@ubuntulinux:~# amrecover
AMRECOVER Version 2.5.1p3. Contacting server on localhost …
220 ubuntulinux AMANDA index server (2.5.1p3) ready.
Setting restore date to today (2008-04-22)
200 Working date set to 2008-04-22.
200 Config set to DailySet?1.
200 Dump host set to ubuntulinux.co.in.
Use the setdisk command to choose dump disk to recover
amrecover> ls
Must select a disk before listing files; use the setdisk command.
amrecover> help
valid commands are:

add path1 … – add to extraction list (shell wildcards)
addx path1 … – add to extraction list (regular expressions)
cd directory – change cwd on virtual file system (shell wildcards)
cdx directory – change cwd on virtual file system (regular expressions)
clear – clear extraction list
delete path1 … – delete from extraction list (shell wildcards)
deletex path1 … – delete from extraction list (regular expressions)
extract – extract selected files from tapes
exit
help
history – show dump history of disk
list [filename] – show extraction list, optionally writing to file
lcd directory – change cwd on local file system
ls – list directory on virtual file system
lpwd – show cwd on local file system
mode – show the method used to extract SMB shares
pwd – show cwd on virtual file system
quit
listhost – list hosts
listdisk [diskdevice] – list disks
setdate {YYYY-MM-DD|–MM-DD|—DD} – set date of look
{YYYY-MM-DD-HH-MM-SS} – set date of look
setdisk diskname [mountpoint] – select disk on dump host
sethost host – select dump host
settape [host:][device|default] – select tape server and/or device
setmode smb|tar – select the method used to extract SMB shares

amrecover> listhost
200- List hosts for config DailySet1
201- ubuntulinux.co.in
200 List hosts for config DailySet1
amrecover> listdisk
200- List of disk for host ubuntulinux.co.in
201- /Project
200 List of disk for host ubuntulinux.co.in
amrecover> setdisk /Project /Documents
200 Disk set to /Project.
amrecover> lpwd
/root
amrecover> ls
2008-04-22 ubunutlinux/
2008-04-22 new/
2008-04-22 myproject/
2008-04-22 lost+found/

amrecover> add myproject
Added dir /myproject/ at date 2008-04-22
amrecover> lpwd
/root
amrecover> extract

Extracting files using tape drive @DEFAULT_TAPE_DEVICE@ on host localhost.
The following tapes are needed: DailySet1-01

Restoring files into directory /root
Continue [?/Y/n]? y

Extracting files using tape drive @DEFAULT_TAPE_DEVICE@ on host localhost.
Load tape DailySet1-01 now
Continue [/Y/n/s/t]? y
Label mismatch, got DailySet?1-02 and expected DailySet?1-01
Looking for tape DailySet?1-01…
./myproject/
./myproject/.bzr/
./myproject/.bzr/branch/
./myproject/.bzr/branch-lock/
./myproject/.bzr/branch/lock/
./myproject/.bzr/repository/
./myproject/.bzr/repository/knits/
./myproject/.bzr/repository/lock/
./myproject/.bzr/repository/revision-store/
./myproject/.bzr/README
./myproject/.bzr/branch-format
./myproject/.bzr/branch/branch-name
./myproject/.bzr/branch/format
./myproject/.bzr/branch/revision-history
./myproject/.bzr/repository/format
./myproject/.bzr/repository/inventory.kndx
./myproject/.bzr/repository/inventory.knit
./myproject/.bzr/repository/revisions.kndx
./myproject/.bzr/repository/revisions.knit
./myproject/.bzr/repository/signatures.kndx
./myproject/.bzr/repository/signatures.knit
amrecover> quit
200 Good bye.

Page 1

Amanda Backup Using Virtual Tape on Ubuntu

sahab — Fri, 28 May 2010 08:23:40 +0000

Amanda Backup Using Virtual Tape on Ubuntu 7.10

Amanda:

AMANDA, the Advanced Maryland Automatic Network Disk Archiver, is a backup system that allows the administrator to set up a single master backup server to back up multiple hosts over network to tape drives/changers or disks or optical media. Amanda uses native dump and/or GNU tar facilities and can back up a large number of workstations running multiple versions of Unix.

This will guide you through setting up virtual tapes (utilize hard disk space for backups)

Install and Modify the xinetd

Create an amanda xinetd entry

If you haven’t already installed xinetd, install it

sudo apt-get install xinetd

Create an amanda xinetd entry
Code:

sudo vim /etc/xinetd.d/amanda

Give it the following contents
Code:

# default: on
# description: The amanda service
service amanda
{
only_from            = ubunutlinux.co.in
disable                  = no
socket_type         = dgram
protocol                = udp
wait                        = yes
user                        = backup
group                     = backup
groups                   = yes
server                     = /usr/lib/amanda/amandad
server_args           = -auth=bsd amdump amindexd amidxtaped
}
service amandaidx
{
socket_type             = stream
protocol                    = tcp
wait                            = no

user                   = backup
group                = backup
groups                  = yes
server                    = /usr/lib/amanda/amindexd
disable                  = no
}
service amidxtape
{
socket_type             = stream
protocol               = tcp
wait                           = no
user                           = backup
group                     = backup
groups                     = yes
server                       = /usr/lib/amanda/amidxtaped
disable                   = no
}

Install the AMANDA Server

Install AMANDA and dependencies

sudo apt-get install amanda-server

Restart xinetd

sudo /etc/init.d/xinetd restart

Become “backup” user

su backup

Create copies of the configuration files, just in case

cp -R /etc/amanda/DailySet1 /etc/amanda/DailySet1.bak

Edit amanda.conf

Let’s get in and edit the amanda.conf
Code:

vim /etc/amanda/DailySet?1/amanda.conf

Make the following changes in the file
Code:

org “”
mailto “backupadmin@ubuntulinux.co.in ”
tpchanger “chg-disk”
changerfile “/etc/amanda/daily/changer”
tapedev “file:/amandabackup/DailySet1/slots”
tapetype HARDDISK
#tapetype HP-DAT <— comment this out
#labelstr “^HISS[0-9][0-9]*$” <— comment this out
amrecover_do_fsf yes
amrecover_check_label yes
amrecover_changer “changer”
define tapetype HARDDISK {
length mbytes
}

Edit disklist

The format for the disklist file is :

Dumptypes are deinfed in /etc/amanda/amanda.conf, but we’ll use the GNUTAR dumptype “comp-user-tar” for this example

Let’s get in and edit the disklist
Code:

vim /etc/amanda/DailySet1/disklist

Add a line like so
Code:

ubuntulinux.co.in /Project comp-user-tar

ubuntlinux.co.in /clientbackup comp-user-tar

What this line is telling AMANDA is that when it attempts to do a dump that it should connect to ubuntlinux.co.in, backup the directory /project and /clientbackup and user the options that are defined in amanda.conf for the “comp-user-tar” dumptype.

Create Virtual Tapes

Choose a location for your tapes to reside

Here we using /amandabackups/

Create the tapelist file that is necessary for indexing tapes available
Code:

touch /etc/amanda/DailySet1/tapelist

Create the location and set permissions for the virtual tapes
Code:

mkdir -p -m 770 /amandabackup/DailySet1/slots

chown -R backup:backup /amdndahosts

CD to the new directory

cd /amandabackup/DailySet1/slots

Create the necessary directories for the tapes
Code:

for (i=1; $i<=25; i++)?; do mkdir slot$i; done

Create symlink for the data directory to point to the first tape
Code:

ln -s slot1 data

Test the vtapes to be sure that we get an ONLINE message
Code:

ammt -f file:/amandabackup/DailySet?1/slots status

Label the tapes

for (i=1; $i<=9; i++)?; do amlabel DailySet1 DailySet?1-0$i slot $i; done

for (i=10; $i<=25; i++)?; do amlabel DailySet1 DailySet?1-$i slot $i; done

Output should look like (for each slot)

labeling tape in slot 1 (file:/amandabackup/DailySet?1/slots)
rewinding, reading label, not an amanda tape
rewinding, writing label DailySet?1-01, checking label, done.

Reset the changer back to slot 1

amtape DailySet1 reset

Output should look like

amtape: changer is reset, slot 1 is loaded.

Edit .amandahosts

On Ubuntu the .amandahosts file is located as /etc/amandahosts

Open the file

vim /etc/amandahosts

The file looks like

localhost backup
localhost root amindexd amidxtaped
ubuntlinux.co.in backup

ubuntlinux.co.in backup amindexd amidxtaped
ubuntlinux.co.in root amindexd amidxtaped

Page 2 (amanda client and backup and restore procedure