Backup scripts

These backup scripts use rsync to minimize network load and creates incremental backups, preserving last four backups. For more info, read http://www.mikerubel.org/computers/rsync_snapshots/.

To install the cron job, run:

$ sudo crontab -e

And add these lines according to your personal configuration:

MAILTO=nomail@openkm.com
@weekly /root/backup.sh | tee -a /root/backup.log

Or, if you want to separate log reports by date:

MAILTO=nomail@openkm.com
@weekly /root/backup.sh | tee /root/backup.$(date +\%Y.\%m.\%d_\%H.\%M.\%S).log

For more information take a look at Crontab quick reference

Remote backup with rsync

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

# Copy to backup server
rsync -apzhR --stats --delete --exclude=*~ --delete-excluded $FILES backup@server:$BACKUP_DIR/$HOST

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

Remote backup with rsync and rotation

#!/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

# Copy to backup server
ssh backup@server "cd $HOST; rm -rf backup.3; mv backup.2 backup.3; mv backup.1 backup.2; mv backup.0 backup.1"
rsync -apzhR --stats --delete --exclude=*~ --delete-excluded --link-dest="$BACKUP_DIR/$HOST/backup.1" \
$FILES backup@server:$BACKUP_DIR/$HOST/backup.0

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

Local backup with rsync and rotation

#!/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

# Calculate snapshot
LAST_SNAPSHOT=`ls -ltr $BACKUP_DIR | tail -1 | awk {'print $8'} | cut -d . -f 2`
NEW_SNAPSHOT=$((LAST_SNAPSHOT+1))

# Copy to backup server
rsync -apzhR --stats --delete --exclude=*~ --exclude="$JBOSS_HOME/cache" --delete-excluded \
--link-dest="$BACKUP_DIR/$HOST/backup.$LAST_SNAPSHOT" $FILES "$BACKUP_DIR/$HOST/backup.$NEW_SNAPSHOT"

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

# Status
echo "=================================";
du -hs $BACKUP_DIR
echo "*********************************";
du -hs --time $BACKUP_DIR/*
echo "=================================";
df -h | grep "$BACKUP_DIR"
echo "=================================";

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

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