BackupServer

From RdiffBackupWiki

#!/bin/bash

# Drop this file into /etc/cron.daily/

#Server Configuration:
# /etc/rdiff-backup.conf
#  BACKUPDIR=local location where to place the backups
#  SSH_KEY=path to a passwortless ssh key which will be used to login into other machines
#  MAXAGE=default age for backups
#  LOGCMD= ususally "logger -p user.notice -t rdiff-backup[$$]"
#
# /etc/rdiff-backup.hosts
# lines containing:
#  <name> <location> <age>
#   name is the name appended to $BACKUPDIR and use to identify the backup
#   location is a rdiff-backup format description of the source location
#   age is optional and gives the time for how long backups are kept else $MAXAGE is taken as default
#   a leading # disables the line (comment)
#
# /etc/rdiff-backup.inc.$name
#  rdiff-backup formatted include-globlist used when backung up $name

#Client Configuration:
# following paths are searched for global include-globlists
#  /rdiff-backup.inc
#  /.rdiff-backup.inc
#  /etc/rdiff-backup.inc
#
# following parts are searched for local include-globlists (apply only to subdirs)
#  /home/*/.rdiff-backup.inc
#  /home/*/*/.rdiff-backup.inc

if test -f /etc/rdiff-backup.conf; then
        source /etc/rdiff-backup.conf
else
        echo "missing /etc/rdiff-backup.conf"
        exit 125
fi

eval $(ssh-agent)
ssh-add $SSH_KEY

cat /etc/rdiff-backup.hosts |\
while read name location maxage; do
        test "${name:0:1}" = '#' && continue

        echo "Backing up $name from $location" | $LOGCMD

        TMP=$(tempfile)

        nice rdiff-backup --check-destination-dir $BACKUPDIR/$name/ 2>&1 |\
                $LOGCMD

        nice rdiff-backup --remove-older-than ${maxage:-$MAXAGE} --force $BACKUPDIR/$name/ 2>&1 |\
                $LOGCMD

        (
                echo "- $BACKUPDIR"
                echo "+ /rdiff-backup.inc"
                echo "+ /.rdiff-backup.inc"
                echo "+ /etc/rdiff-backup.inc"
                echo "+ /home/*/.rdiff-backup.inc"
                echo "+ /home/*/*/.rdiff-backup.inc"

                test -f "/etc/rdiff-backup.inc.$name" && cat "/etc/rdiff-backup.inc.$name"
                test -f "$BACKUPDIR/$name/rdiff-backup.inc" && cat "$BACKUPDIR/$name/rdiff-backup.inc"
                test -f "$BACKUPDIR/$name/.rdiff-backup.inc" && cat "$BACKUPDIR/$name/.rdiff-backup.inc"
                test -f "$BACKUPDIR/$name/etc/rdiff-backup.inc" && cat "$BACKUPDIR/$name/etc/rdiff-backup.inc"
                for i in $BACKUPDIR/$name/home/*/.rdiff-backup.inc; do
                        test "$i" = "$BACKUPDIR/$name/home/*/.rdiff-backup.inc" && break
                        dirname="$(dirname $i)"
                        dirname="${dirname#$BACKUPDIR/$name}"
                        sed -e 's|^\([+-] \)\?\(.\+\)$|\1'${dirname}'/\2|' -e '/^$/d' -e '/\.\./d' <$i
                done
                for i in $BACKUPDIR/$name/home/*/*/.rdiff-backup.inc; do
                        test "$i" = "$BACKUPDIR/$name/home/*/*/.rdiff-backup.inc" && break
                        dirname="$(dirname $i)"
                        dirname="${dirname#$BACKUPDIR/$name}"
                        sed -e 's|^\([+-] \)\?\(.\+\)$|\1'${dirname}'/\2|' -e '/^$/d' -e '/\.\./d' <$i
                done
        ) >$TMP

        nice rdiff-backup -b --include-globbing-filelist $TMP --exclude '*' $location $BACKUPDIR/$name/ 2>&1 |\
                $LOGCMD

        nice rdiff-backup --list-increments $BACKUPDIR/$name/ 2>&1 |\
                $LOGCMD

        rm $TMP
done

eval $(ssh-agent -k)