backup

tar -cvjSf filename.tar.bz2 foldername
-c create
-v verboase
-j bzip2
-S Sparse files handled efficiently
-f filename

See user manual here: www.gnu.org/…escue_manual.html

Some resources for setting up backups:

The goal is to sync a common directory structure over multiple sites.

Permissions on server

• create sync user:

useradd -g office -d /home/common -c "btsync service" -m btsync

• Don’t use a sticky bit, or sync will not be able to delete files
• Make sure all contributors to /home/common have primary group office and umask=002
  • This will mean that they all have read/write access to the common files
• Recommended to use the SGID bit to lock all new files with group office and prevent this changing

chgrp -R office /home/common
chmod g+s /home/common #just to top directory (assume no sub-directories)
chmod -R g+w /home/common

• Note that if a user creates a new file, when btsync replicates it on other systems it will lose ownership information (and be owned by btsync). But because it will have group office it will be editable.

First time setup

• check wget pkgs.repoforge.org/…iff-backup for correct version

wget http://pkgs.repoforge.org/rdiff-backup/rdiff-backup-1.2.8-4.el6.rf.x86_64.rpm
rpm -ivh rdiff-backup*.rpm

• A cleaner way of doing is is with EPEL as per www.centosblog.com/…d-centos-6
• Here are the instructions for CentOS 7

rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

dd if=/dev/VolGroup00/LogVol00 of=/dev/vg1000/LogVol00
dd if=/dev/VolGroup00/LogVol00 | bzip2 -1 > /data/LogVol00.dd.bz
dd if=/dev/VolGroup00/amfhome | bzip2 -1 > /data/amfhome.dd.bz
dd if=/dev/sdc1 | bzip2 -1 > /data/sdc1_grub.dd.bz
#dd if=/dev/VolGroup00/vm_amfh | bzip2 -1 > /data/vm_amfh.dd.bz
dd if=/dev/VolGroup00/vm_amfh of=/data/vm_amfh.dd

dd if=/dev/VolGroup00/jessica | bzip2 -1 > /data/jessica.dd.bz #20Gb
dd if=/dev/VolGroup00/fred | bzip2 -1 > /data/fred.dd.bz #10Gb

Ubuntu Hardy and Intrepid come with older versions or rdiff-backup, but the current stable version (1.2.2) is in the Jaunty repositories. To install it:
Download and install the .deb file from the bottom of this page: http://packages.ubuntu.com/jaunty/utils/rdiff-backup
Install the recommended libraries:
aptitude install python-pylibacl python-pyxattr

First it is necessary to create a backup user on the database which has (only) read access to everything. This is because its password will be embedded in the backup script which reduces security. This can be done with:

BKUSR=backup
BKPW=backuppassword
BKDIR=/var/www/dbbackup
mkdir -p $BKDIR
echo "GRANT SELECT, LOCK TABLES ON *.* TO '$BKUSR'@'localhost' IDENTIFIED BY '$BKPW'; FLUSH PRIVILEGES;" | mysql -u root -p

In the backup script, first some variables are set up

BKUSR=backup
BKPW=backuppassword
BKDIR=/var/www/dbbackup
SITE=cfaw.info