Backup with rdiff-backup

rdiff-backup backs up one directory to another, possibly over a network. The target directory ends up a copy of the source directory, but extra reverse diffs are stored in a special subdirectory of that target directory, so you can still recover files lost some time ago. The idea is to combine the best features of a mirror and an incremental backup. rdiff-backup also preserves subdirectories, hard links, dev files, permissions, uid/gid ownership, modification times, extended attributes, acls, and resource forks. Also, rdiff-backup can operate in a bandwidth efficient manner over a pipe, like rsync. Thus you can use rdiff-backup and ssh to securely back a hard drive up to a remote location, and only the differences will be transmitted.

rdiff-backup from Debian throws a warning due to a deprecated method [os.popen2 is deprecated], which can be hidden following the steps at How to shut up Python deprecation warnings.

Remote backup with rdiff-backup

#!/bin/bash
#
## BEGIN CONFIG ##
HOST=$(uname -n)
FILES="/home/openkm"
BACKUP_DIR="/mnt/backup"
## END CONFIG ##
echo -e "### BEGIN: $(date +"%x %X") ###\n"

# Stop JBoss
/etc/init.d/jboss stop

# Backup and purge old backups
rdiff-backup --remove-older-than 30B backup@server::$BACKUP_DIR/$HOST
rdiff-backup -v 3 --print-statistics --exclude /media --exclude /mnt \
  --include $FILES --exclude '**' / backup@server::$BACKUP_DIR/$HOST

# Start JBoss
/etc/init.d/jboss start
echo -e "\n### END: $(date +"%x %X") ###"

# Status
echo "=================================";
rdiff-backup --list-increment-sizes backup@server::$BACKUP_DIR/$HOST
echo "=================================";

More info about rdiff-backup:

• rdiff-backup home page
• rdiff-backup wiki

Local backup to USB disk with rdiff-backup

USB disk mount point can be defined in /etc/fstab as:

 /dev/sdb1       /mnt/backup     ext4    defaults        0       0

#!/bin/bash
#
## BEGIN CONFIG ##
HOST=$(uname -n)
MYSQL_PASS=""
OPENKM_HOME="/home/openkm"
JBOSS_HOME="$OPENKM_HOME/jboss-4.2.3.GA"
DATABASE_EXP="$OPENKM_HOME/db"
BACKUP_DIR="/mnt/backup"
## END CONFIG ##

if [ $(id -u) != 0 ]; then echo "You should run this script as root"; exit; fi

echo -e "### BEGIN: $(date +"%x %X") ###\n"
rm -rf $DATABASE_EXP
mkdir -p $DATABASE_EXP

# Mount disk
if mount | grep "$BACKUP_DIR type" > /dev/null; then
  echo "$BACKUP_DIR already mounted";
else
  mount $BACKUP_DIR;
fi

# Stop JBoss
/etc/init.d/jboss stop

# Clean logs
echo "Clean JBoss temporal files."
rm -rf $JBOSS_HOME/server/default/log
rm -rf $JBOSS_HOME/server/default/tmp
rm -rf $JBOSS_HOME/server/default/work

# Backup de MySQL
if [ -n "$MYSQL_PASS" ]; then
  MYSQL_DBS=$(mysqlshow -h localhost -u root -p$MYSQL_PASS | awk '(NR > 2) && (/[a-zA-Z0-9]+[ ]+[|]/) && ($2 != "mysql") && ($2 != "test") && ($2 != "information_schema") { print $2 }');
  
  for DB in $MYSQL_DBS ; do
    echo "* Backuping MySQL data from $DB...";
    mysqldump -h localhost -u root -p$MYSQL_PASS $DB > $DATABASE_EXP/mysql_$DB.sql
  done
  echo "-------------------------------------";
fi

# Backup and purge old backups
rdiff-backup --remove-older-than 30B $BACKUP_DIR/$HOST
rdiff-backup -v 3 --print-statistics --exclude /media --exclude /mnt \
  --include $OPENKM_HOME --exclude '**' / $BACKUP_DIR/$HOST

# Start JBoss
/etc/init.d/jboss start
echo -e "\n### END: $(date +"%x %X") ###"

# Status
echo "=================================";
rdiff-backup --list-increment-sizes $BACKUP_DIR/$HOST
echo "*********************************";
df -h | grep "$BACKUP_DIR"
echo "=================================";

# Umount disk
sync
umount $BACKUP_DIR

Be sure to have the last JBoss startup script, otherwise use this piece of code to ensure that JBoss is stopped before backuping the files:

while [ "$(ps -ef | grep java | grep jboss | wc -l)" -gt "0" ]; do
  sleep 5; echo ".";
done

Remote backup with rdiff-backup

#!/bin/bash
#
## BEGIN CONFIG ##
HOST=$(uname -n)
MYSQL_PASS="****"
OPENKM_HOME="/home/openkm"
JBOSS_HOME="$OPENKM_HOME/jboss-4.2.3.GA"
DATABASE_EXP="$OPENKM_HOME/db"
BACKUP_DST="user@server::/path/to/backup"
## END CONFIG ##

echo -e "### BEGIN: $(date +"%x %X") ###\n"
rm -rf $DATABASE_EXP
mkdir -p $DATABASE_EXP
 
# Stop JBoss
/etc/init.d/jboss stop

# Backup de MySQL
MYSQL_DBS=$(mysqlshow -h localhost -u root -p$MYSQL_PASS | awk '(NR > 2) && (/[a-zA-Z0-9]+[ ]+[|]/) && ($2 != "mysql") && ($2 != "test") && ($2 != "information_schema") { print $2 }');

for DB in $MYSQL_DBS ; do
  echo "* Backuping MySQL data from $DB..."
  mysqldump -h localhost -u root -p$MYSQL_PASS $DB > $DATABASE_EXP/mysql_$DB.sql
done

echo "-------------------------------------"
 
# Backup and purge old backups
rdiff-backup --remove-older-than 30B $BACKUP_DST

rdiff-backup -v 3 --print-statistics --exclude /media --exclude /mnt \
  --exclude /etc/webmin/sysstats \
  --include /etc --include /root --include /home --include /var/www \
  --exclude '**' / $BACKUP_DST
 
# Start JBoss
/etc/init.d/jboss start
echo -e "\n### END: $(date +"%x %X") ###"
 
# Status
echo "=================================";
rdiff-backup --list-increment-sizes $BACKUP_DST
echo "=================================";