hcoop-backup

   1 #!/bin/bash -e
   2
   3 #
   4 # it is dangerous to remove the "-e" above; please don't do that.
   5 #
   6
   7 #
   8 # run this script as root, on deleuze
   9 #
  10
  11 exec >& /var/log/backup-to-s3-log
  12
  13 PATH=$PATH:/bin:/usr/bin:/sbin:/usr/sbin
  14 #COMPRESS_EXT=.bz2
  15 #COMPRESS_PROG=bzip2
  16 COMPRESS_EXT=.gz
  17 COMPRESS_PROG=gzip
  18 # units for BWLIMIT are KB/s
  19 BWLIMIT=325
  20
  21 IFS=$'\n'
  22
  23 SCRIPTDIR=$(dirname $0)
  24 KEYFILE=/etc/backup-encryption-key
  25 BUCKET=hcoop.net-backups
  26 BACKUPDIR=full
  27 BACKUPTMP=/var/backups/hcoop-backup-testing
  28 SUBDIR=$(date +%Y.%m.%d)
  29
  30 export S3_ACCESS_KEY_ID=$(cat ~mwolson_admin/.amazon/access.key)
  31 export S3_SECRET_ACCESS_KEY=~mwolson_admin/.amazon/secret.key
  32
  33 function s3_cmd () {
  34     # $1: command (get|put|ls|rm)
  35     # $2: bucket
  36     # $3: destination
  37     # $4: source file
  38     $SCRIPTDIR/s3 $1 $2 $3 $4 ${BWLIMIT}K
  39 }
  40
  41 function copy_over () {
  42     # Move file to its offsite destination
  43     # $1: file, $2: relative directory (optional)
  44     if test -z "$1" || test -n "$3"; then
  45         echo "Bad programming"
  46         exit 1
  47     fi
  48     local FILE=$1
  49     local DEST=$BACKUPDIR/$SUBDIR
  50     if test -n "$2"; then
  51         DEST=$DEST/$2
  52     fi
  53     s3_cmd put $BUCKET $DEST/$FILE $FILE
  54     rm -f $FILE
  55 }
  56
  57 function prune_old_backups () {
  58     local oldpwd=$PWD
  59     cd $BACKUPDIR
  60     find . -mindepth 1 -maxdepth 1 -type d -ctime +7 \
  61         -execdir rm -fr '{}' \; || true
  62     rm -rf $SUBDIR
  63     mkdir -p $SUBDIR
  64     cd $oldpwd
  65 }
  66
  67 prune_old_backups
  68
  69 mkdir -p $BACKUPTMP
  70 cd $BACKUPTMP
  71
  72 groups
  73 echo 'I am in:'
  74 pwd
  75 echo
  76
  77 echo building package lists...
  78 dpkg-query -W -f='${Package}\n' > packages
  79 (cd /; find / /usr/ /usr/local/ /var/ -xdev)   | sort | uniq > allfiles
  80 dpkg-query -W -f='${Package}\n'      | xargs dpkg -L | sort | uniq > debfiles
  81 dpkg-query -W -f='${Conffiles}\n'           | grep / | cut -b2- | \
  82   sed 's_ .*__' | sort | uniq > conffiles
  83
  84 diff allfiles debfiles | grep '^<' | cut -b 3- | \
  85  grep -v ^/var/cache | \
  86  grep -v ^/var/tmp | \
  87  grep -v ^/var/lib/dpkg | \
  88  grep -v ^/var/backups | \
  89  grep -v ^/var/lib/changetrack | \
  90  grep -v ^/var/local/lib/spamd | \
  91  grep -v ^/var/run | \
  92  grep -v ^/var/lock | \
  93  grep -v ^/var/lib/ucf | \
  94  grep -v ^/vicepa | \
  95  grep -v ^/home | \
  96  grep -v ^/tmp | \
  97  grep -v '^/afs$' | \
  98  grep -v '^/$' | \
  99  grep -v '^/usr/$' | \
 100  grep -v ^/usr/src | \
 101  grep -v '^/usr/.*\.pyc' | \
 102  grep -v '^/usr/.*\.elc' | \
 103  grep -v '^/usr/bin/perldoc\.stub$' | \
 104  grep -v '^/usr/bin/.*\.notslocate$' | \
 105  grep -v '^/usr/lib/courier/.*\.rand$' | \
 106  grep -v '^/usr/lib/gconv/gconv-modules\.cache$' | \
 107  grep -v '^/usr/lib/graphviz/config$' | \
 108  grep -v '^/usr/lib/locale/locale-archive$' | \
 109  grep -v '^/usr/share/info/dir$' | \
 110  grep -v '^/usr/share/info/dir\.old$' | \
 111  grep -v '^/usr/share/emacs21/site-lisp/' | \
 112  grep -v '^/usr/share/emacs22/site-lisp/' | \
 113  grep -v '^/usr/share/snmp/mibs/\.index$' | \
 114  grep -v '^/usr/share/vim/addons/doc/tags$' \
 115  > backupfiles
 116
 117 cat conffiles >> backupfiles
 118
 119 cat backupfiles | \
 120  grep -v ^/home | \
 121  grep -v ^/usr/local | \
 122  grep -v ^/var/spool | \
 123  grep -v ^/var/log | \
 124  grep -v ^/usr/lib/python2.4/ | \
 125  grep -v ^/var/lib/python-support | \
 126  grep -v ^/usr/share/jed/lib | \
 127  grep -v ^/usr/share/man | \
 128  grep -v ^/usr/share/perl5/IkiWiki/Plugin | \
 129  grep -v ^/media | \
 130  grep -v ^/vmlinuz | \
 131  grep -v ^/vmlinuz.old | \
 132  grep -v '^/sbin/[a-z\-]*\.modutils$' | \
 133  grep -v ^/opt/dell/srvadmin/ | \
 134  grep -v ^/boot/ | \
 135  grep -v ^/dev/ | \
 136  grep -v ^/etc/ | \
 137  grep -v ^/root/ | \
 138  grep -v ^/var/ | \
 139  grep -v ^/lib/modules/ | \
 140  grep -v ^/var/domtool/ | \
 141  grep -v ^/var/lib/mysql/ | \
 142  grep -v ^/var/lib/postgres/ | \
 143  grep -v ^/var/lib/postgresql/ | \
 144  xargs -I{} -d\\n -- bash -c "test -L '{}' || echo '{}'" > complain
 145
 146 F=hcoop.backup.tar$COMPRESS_EXT.aescrypt
 147 tar clpf - --ignore-failed-read --no-recursion -C / -T backupfiles | \
 148   $COMPRESS_PROG | \
 149   ccrypt -k $KEYFILE -e > $F
 150 copy_over $F
 151
 152 # Acquire lock before messing with spamd
 153 COUNT=0
 154 LOCK=/var/local/lib/spamd/.lock
 155 while test -f $LOCK; do
 156     sleep 2m
 157     COUNT=$(expr $COUNT + 1)
 158     if test $COUNT -eq 10; then
 159         # Enough waiting.  Kill the process.
 160         P=$(cat $LOCK) || :
 161         test -n "$P" && kill $P || :
 162         rm -f $LOCK
 163         break
 164     fi
 165 done
 166 touch $LOCK
 167
 168 F=common.spamd.tar$COMPRESS_EXT.aescrypt
 169 tar clpf - --ignore-failed-read -C / /var/local/lib/spamd | \
 170   $COMPRESS_PROG | \
 171   ccrypt -k $KEYFILE -e > $F.new
 172 rm -f $LOCK
 173 copy_over $F.new ..
 174
 175 test -s $BACKUPDIR/$F.new && \
 176     mv $BACKUPDIR/$F.new $BACKUPDIR/$F
 177
 178 vos listvol deleuze | \
 179   tail -n +2 | \
 180   head -n -3 | \
 181   cut -b1-34 | \
 182   grep -v "\.backup .*$" | \
 183   grep -v "\.readonly .*$" | \
 184   sed 's_^ .*__' | \
 185   sed 's_ .*$__' | \
 186   grep '[A-Za-z]' \
 187   > volumes
 188
 189 cat volumes | \
 190   grep -v not-backed-up | \
 191   xargs -I{} -d\\n -- \
 192   bash -c \
 193     "F={}.dump$COMPRESS_EXT.aescrypt ;
 194      vos dump -id {} -localauth -clone |
 195        $COMPRESS_PROG | ccrypt -k $KEYFILE -e > \$F ;
 196      < \$F catsync -b $BWLIMIT $BACKUPDIR/$SUBDIR/\$F ;
 197      rm -f \$F"
 198
 199 echo backing up databases
 200 F=databases.tar$COMPRESS_EXT.aescrypt
 201 tar -C /var/backups/databases/ -cf - . | \
 202   $COMPRESS_PROG | \
 203   ccrypt -k $KEYFILE -e > $F
 204 copy_over $F
 205
 206 grep '[a-z/]' complain && \
 207   mail -a 'From: The Backup Program <backups@deleuze.hcoop.net>' \
 208        -s "automated message: annoying files found on deleuze (please do something about them)" admins@hcoop.net \
 209        < complain \
 210   || true
 211
 212 echo done
 213