examples/remote_backup_ssh/backitup

   1 #!/bin/sh
   2
   3 #
   4 # This script will backup local drives to a remote tape drive over ssh.
   5 #  written by David B. Peterson <dave@toppledwagon.com>
   6 #
   7 # Follow these steps before using it the first time:
   8 # 1.  Configure the env variables below, especially OPERATOR, TAPEHOST
   9 #      TAPEDEV, and FILESYSTEMS
  10 # 2.  run the following commands as root (on the machine to be backed up):
  11 # ssh-keygen -t dsa
  12 # cat ~/.ssh/id_dsa.pub | ssh OPERATOR@TAPEHOST 'cat - >> ~/.ssh/authorized_keys2'
  13 #
  14 # where OPERATOR and TAPEHOST are as you have defined below.
  15
  16 # We will run under screen so you can come back to the backup, if you need to.
  17 if [ ! "$WINDOW" ]; then
  18    exec screen $0
  19    exit
  20 fi
  21
  22 # ssh-agent allows us to backup securely without entering the passphrase so
  23 # many times.  This version uses openssh v2.9
  24 if [ ! $SSH_AGENT_PID ]; then
  25    echo Starting ssh-agent...
  26    exec ssh-agent -- /bin/sh $0
  27    exit
  28 fi
  29
  30 OPERATOR=backup
  31 TAPEHOST=tapehost.example.com
  32 TAPEDEV=/dev/nst0
  33 RMT=/sbin/rmt
  34 RSH='/usr/bin/ssh'
  35 DATE=`date +%Y%m%d`
  36 DUMP='/sbin/dump 0auf'
  37 LOGDIR=/var/log/backup
  38 FILESYSTEMS='hda1 hda7 hda6 hda5 hda10'
  39
  40 #### config above ####
  41 # backup FILESYSTEMS to the TAPEDEV on TAPEHOST with DUMP as OPERATOR using RSH
  42
  43 export RMT RSH
  44 mkdir -p $LOGDIR &> /dev/null
  45 ssh-add ~/.ssh/id_dsa
  46
  47 echo "Rewinding tape..."
  48 REWIND="mt -f $TAPEDEV rewind"
  49 $RSH $OPERATOR@$TAPEHOST $REWIND
  50
  51 for FS in $FILESYSTEMS
  52 do
  53    $DUMP $OPERATOR@$TAPEHOST:$TAPEDEV /dev/$FS 2>&1 | tee $LOGDIR/$FS.$DATE
  54 done
  55
  56 echo "Rewinding and ejecting tape..."
  57 OFFLINE="mt -f $TAPEDEV offline"
  58 $RSH $OPERATOR@$TAPEHOST $OFFLINE
  59