193 lines
5.8 KiB
Text
193 lines
5.8 KiB
Text
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#!/bin/bash
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#
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# egrdbackup
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#
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# (c) 2006 Egressive Limited
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# Backup script using rdiff-backup
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# by rob@egressive.com
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# modified by dave@egressive.com 20060920
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# modified rob@egressive.com 20061206 moved config items into seperate .conf file
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#
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##
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# Description - egrdbackup performs one task:
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#
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# Performs incremental backups of designated directory
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# hierarchy or backup set (minus any exclusions) into a designated
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# backup directory.
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#
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# The current view of the data at any time will reflect the most
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# recent state of all the files in the backup set. Diffs for
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# older versions of all files are stored in hidden directories.
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# Older versions of any file can be recovered using rdiff-backup directly.
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#
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# For example, to recover a backup of the directory (and contents) of
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# /home/operations from 4 days ago, where the backup directory is /backups, run:
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#
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# rdiff-backup -r 4D /backups/home/operations/ /home/operations/recovered-$(date "+%Y-%m-%d")
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#
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##
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#
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# Default Settings
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#
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DEBUG=false
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#
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if [ $DEBUG == "true" ] ; then
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echo "Default Settings"
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fi
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#
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RDIFF_COMMAND=`which rdiff-backup`
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MAIL_COMMAND=`which mail`
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DF_COMMAND=`which df`
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GREP_COMMAND=`which grep`
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TAIL_COMMAND=`which tail`
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NICE_COMMAND=`which nice`
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HEAD_COMMAND=`which head`
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CAT_COMMAND=`which cat`
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DIRNAME_COMMAND=`which dirname`
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BASENAME_COMMAND=`which basename`
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MAIL_TO=root # temporary - overridden in CONF_FILE
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#
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#
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#EGRD_ROOT=/etc/egscripts/egrdbackup
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EGRD_ROOT=`$DIRNAME_COMMAND $0`
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EGRD_SCRIPT=`$BASENAME_COMMAND $0`
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# config file
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CONF_FILE=$EGRD_ROOT/$EGRD_SCRIPT.conf
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# name of file to run before and after rdiff-backup runs - for example an initial rsync or usb mount
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INITIAL_CMD_FILE="initial.sh"
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POST_CMD_FILE="postrun.sh"
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#
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INITIAL_CMD_FILE_OK="true"
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#
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# initialise end status
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BACKUP_STATUS="[SUCCESS]"
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#
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# Get local configuration
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#
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if [ $DEBUG == "true" ] ; then
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echo "Get Local Settings"
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fi
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if [ -x $CONF_FILE ] ; then
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. $CONF_FILE
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else
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$CAT_COMMAND $LOGFILE | $MAIL_COMMAND -s "[ERROR] Could not find config file for $SERVERNAME backup" $MAIL_TO
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exit 1
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fi
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# logfile
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LOGFILE=/var/log/$EGRD_LOGNAME.log # use logrotate to manage logs
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#
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#
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##
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if [ $DEBUG == "true" ] ; then
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echo "Remove Older versions"
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fi
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#
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# You will need a --force the first time you run, or if you clear out the $RDIFF_DEST
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# directory at any stage. Probably safer not to use it normally.
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#
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# check to see if the default rdiff revision directory is in place - if so, don't force
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#
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if [ "$RDIFF_FORCE" == "true" ] ; then
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RDIFF_FORCE_ARG=" --force "
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fi
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#
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#
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# If an initial command file exists (say to do an rsync first)
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#
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if [ -x $EGRD_ROOT/$INITIAL_CMD_FILE ] ; then
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. $EGRD_ROOT/$INITIAL_CMD_FILE
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fi
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#
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if ! [ $INITIAL_CMD_FILE_OK == "true" ]
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then
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BACKUP_STATUS="[ERROR]"
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BACKUP_ERROR=" | Error during initial setup"
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echo "Fatal error while running initial.sh" >> $LOGFILE 2>> $LOGFILE
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$CAT_COMMAND $LOGFILE | $MAIL_COMMAND -s "$BACKUP_STATUS $SERVERNAME backup $BACKUP_ERROR" $MAIL_TO >> $LOGFILE 2>> $LOGFILE
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echo "Email sent to $MAIL_TO" >> $LOGFILE
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echo "Script complete" >> $LOGFILE 2>> $LOGFILE
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echo "" >> $LOGFILE
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exit 1
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fi
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if test -d $RDIFF_DEST/rdiff-backup-data ; then
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if test -n $RDIFF_DAYS_OF_REVISIONS ; then
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#
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echo "++++++++++++++++++++++++++++++++++++++++++" >> $LOGFILE
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echo " Deleting revisions older than $RDIFF_DAYS_OF_REVISIONS days " >> $LOGFILE
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echo "++++++++++++++++++++++++++++++++++++++++++" >> $LOGFILE
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# run delete command...
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echo "Running command: $NICE_COMMAND $RDIFF_COMMAND --force --remove-older-than ${RDIFF_DAYS_OF_REVISIONS}D $RDIFF_DEST" >> $LOGFILE
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if ! $NICE_COMMAND $RDIFF_COMMAND --force --remove-older-than ${RDIFF_DAYS_OF_REVISIONS}D $RDIFF_DEST >> $LOGFILE 2>> $LOGFILE ; then
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if ! $TAIL_COMMAND -2 $LOGFILE | $GREP_COMMAND "No increments older" > /dev/null 2>> $LOGFILE ; then
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BACKUP_STATUS="[ERROR]"
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BACKUP_ERROR=" | Error deleting revisions"
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fi
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fi
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fi
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fi
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#
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##
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ALL_RDIFF_EXCLUDES=""
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if [ -n "$RDIFF_EXCLUDES" ] ; then
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for i in $RDIFF_EXCLUDES ; do
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ALL_RDIFF_EXCLUDES=$ALL_RDIFF_EXCLUDES" --exclude $i "
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done
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fi
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#
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# Start Rdiff-backup!
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#
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# make sure log file exists
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if [ $DEBUG == "true" ] ; then
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echo "Start backup"
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fi
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touch $LOGFILE
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DATE=`date`
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echo "+++++++++++++++++++++++++++++++++++++++++++" >> $LOGFILE
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echo " Starting backup ($DATE) " >> $LOGFILE
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echo "+++++++++++++++++++++++++++++++++++++++++++" >> $LOGFILE
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echo "Running command: $NICE_COMMAND $RDIFF_COMMAND $RDIFF_ARGS $ALL_RDIFF_EXCLUDES $RDIFF_SRC $RDIFF_DEST " >> $LOGFILE
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if ! $NICE_COMMAND $RDIFF_COMMAND $RDIFF_FORCE_ARG $RDIFF_ARGS $ALL_RDIFF_EXCLUDES $RDIFF_SRC $RDIFF_DEST \
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>> $LOGFILE 2>> $LOGFILE ; then
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echo "Error Code - rdiff-backup returned: $?" >> $LOGFILE
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fi
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if ! $TAIL_COMMAND -3 $LOGFILE | $GREP_COMMAND "Errors 0" > /dev/null 2>> $LOGFILE
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then
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BACKUP_STATUS="[ERROR]"
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BACKUP_ERROR=$BACKUP_ERROR" | Error during backup"
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fi
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#
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if [ $DEBUG == "true" ] ; then
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echo "============================="
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tail -10 $LOGFILE
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echo "============================="
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fi
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#
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if [ $DEBUG == "true" ] ; then
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echo "Log and email out results"
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fi
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#
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echo "File system usage:" >> $LOGFILE
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$DF_COMMAND -h >> $LOGFILE 2>> $LOGFILE
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#
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if [ $DEBUG == "true" ] ; then
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echo "Finish"
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fi
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#
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DATE=`date`
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echo "+++++++++++++++++++++++++++++++++++++++++++" >> $LOGFILE
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echo " Completed backup ($DATE) " >> $LOGFILE
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echo "+++++++++++++++++++++++++++++++++++++++++++" >> $LOGFILE
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#
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#
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# If a post command file exists (say to unmount a usb drive)
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#
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if [ -x $EGRD_ROOT/$POST_CMD_FILE ] ; then
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. $EGRD_ROOT/$POST_CMD_FILE
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fi
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#
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$CAT_COMMAND $LOGFILE | $MAIL_COMMAND -s "$BACKUP_STATUS $SERVERNAME backup $BACKUP_ERROR" $MAIL_TO >> $LOGFILE 2>> $LOGFILE
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echo "Email sent to $MAIL_TO" >> $LOGFILE
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echo "Script complete" >> $LOGFILE 2>> $LOGFILE
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echo "" >> $LOGFILE
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