#!/bin/bash

recipient=""
dump="/tmp/bare_metal"
bare_metal=bare_metal
date=`date +%Y%m%d` 
error_log="/tmp/bare_metal_error.log"

###### Exclusions here ######
exclude="--exclude squid-reports --exclude pgsql"

[ -f $error_log ] && rm $error_log

error()
{
         echo
         echo "Error: $1"
	 echo $1 > $error_log
         mail -s "baremetal backup failed on $HOSTNAME" $recipient < $error_log
         exit 1
}

###### Checking that packages are installed ###### 
for i in "rsync" "sudo" "md5sum"
  do
    [ `which $i` ] || error "$i not found"
  done
[ -d $dump ] || mkdir $dump

###### Gathering files ######
echo "Gathering files"
for s in "/etc" "/boot" "/usr/local" "/usr/share/bugzilla" "/var/log" "/var/www" "/var/spool/cron" "/var/yp" "/var/lib/mailman" "/usr/share/request-tracker3" "/var/local/lib/rdp-wiki/"
  do
    [ -d $s ] || continue
    echo "  $s"
    rsync -az --delete $exclude $s $dump/
  done

[ -f /etc/redhat-release ] && rpm -qa > $dump/package_list
[ -f /etc/debian_version ] && dpkg -l > $dump/package_list
[ -f /etc/SuSE-release   ] && rpm -qa > $dump/package_list
echo "Gathering complete"

###### Tarring and compressing files ######
echo
echo "Tarring and compressing files"
tar -zcf /tmp/bare_metal_$HOSTNAME\_$date.tgz $dump > /dev/null 2>&1
echo "Tarring complete"

###### Uploading files ######
echo
echo "Uploading files"
chown $bare_metal:$bare_metal /tmp/bare_metal_$HOSTNAME\_$date.tgz
sudo -u $bare_metal /bin/cp -f /tmp/bare_metal_$HOSTNAME\_$date.tgz /home/$bare_metal/backups/ || error "upload to /home/$bare_metal/backups/ failed"
ls -hl /home/$bare_metal/backups/bare_metal_$HOSTNAME\_$date.tgz
echo "Upload complete"

###### Consolidating backups ######
echo
echo "Consolidating backups"
while [ "`ls -t /home/$bare_metal/backups/bare_metal* | grep -c $HOSTNAME`" -gt "1" ]
  do
    [ -d /home/$bare_metal/not-backed-up/ ] || break
    sudo -u $bare_metal mv `ls -ltra /home/$bare_metal/backups/bare_metal_$HOSTNAME* | grep -m 1 $HOSTNAME | awk '{print $NF}'` /home/$bare_metal/not-backed-up/
  done
echo "Consolidation complete"

###### Tidying up local files ######
echo
echo "Tidying up local files"
[ "`md5sum /tmp/bare_metal_$HOSTNAME\_$date.tgz | awk '{print $1}'`" == "`md5sum /home/$bare_metal/backups/bare_metal_$HOSTNAME\_$date.tgz | awk '{print $1}'`" ] && rm /tmp/bare_metal_$HOSTNAME* || error "checksum failed"
echo "Tidying up complete"

exit 0