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#!/bin/sh
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#
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# Backup files needed for metacat. This script creates a temporary directory,
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# backs up the postgres database, metacat data files, and ldap directory, and
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# then creates a gzipped tar file from those files. It then writes the backup
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# file to a DVD drive and then cleans up any old backup files.
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#
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# To run this file, install it in /usr/sbin or a similar location and add an
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# entry in the root user's crontab to run the command periodically. The
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# following crontab entry would run it every night at 2:00 am
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# 0 2 * * * /usr/sbin/backup-metacat.sh >> $HOME/cron-output 2>&1
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#
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# This is really just an example script and may not work in your environment
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# uless you modify it appropriately.
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#
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# 13 March 2006 Matt Jones
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# Name of the metacat database in postgres to be backed up
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DBNAME=metacat
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# The day of the week on which the DVD is swapped (1-7, 1=Monday)
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# This must be correct or else the write to DVD will not work
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SWAPDAY=2
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# Number of days of backups to keep online, anything older is removed
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DAYSTOKEEP=7
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# Device to be used for the DVD writer -- this may vary on your system
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DVD=/dev/dvd
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#
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# Below here lie demons
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#
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# Set up our umask to protect files from prying eyes
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umask 007
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# Make a temp dir for the backed up files
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TAG=`date +%F-%H%M%S`
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DATADIR="/var/metacat"
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ARCHROOT="/var/metacat/metacat-backup"
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mkdir $ARCHROOT
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chgrp postgres $ARCHROOT
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chmod g+rwxs $ARCHROOT
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ARCHNAME="metacat-backup-$TAG"
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ARCHDIR="$ARCHROOT/$ARCHNAME"
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mkdir $ARCHDIR
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# Shut down the tomcat server so nobody else changes anything while we backup
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/etc/init.d/tomcat stop
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# Shut down ldap too
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/etc/init.d/slapd stop
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# Backup postgres
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su - postgres -c "pg_dump $DBNAME > $ARCHDIR/metacat-postgres-backup.sql"
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# Backup the data files
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tar czf $ARCHDIR/datafiles-backup.tgz --exclude=$ARCHROOT $DATADIR
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# Backup LDAP to an LDIF file
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slapcat -l $ARCHDIR/$DBNAME-ldap.ldif
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# Restart LDAP
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/etc/init.d/slapd start
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# Restart tomcat
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/etc/init.d/tomcat start
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# Tar up the archive and copy it to archive media
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cd $ARCHROOT
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tar czf $ARCHDIR.tgz $ARCHNAME
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# Clean up the temp files
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rm -rf $ARCHDIR
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# Write the backup file to DVD
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DAY=`date +%u`
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DVDFLAG=-M
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if [ $DAY == $SWAPDAY ] ; then
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DVDFLAG=-Z
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fi
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growisofs $DVDFLAG $DVD -R -J $ARCHDIR.tgz
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# clean up any of the backup files that are older than DAYSTOKEEP
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find $ARCHROOT -mtime +$DAYSTOKEEP -exec rm -f {} \;
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