-#!/bin/bash
+#!/bin/sh
#dirs
confdir=/home/backup/conf/ #configuration files
-webdir=/home/backup/public_html #web-pages
storagedir=/backup #mountpoint of huge disc
###
umask 027
# The computers we want to back up
-unixcomputers=`cat $confdir/computers.unix`
-#ntcomputers=`cat $confdir/computers.nt`
+unixcomputers=`cat $confdir/computers.unix \
+ | grep -v "^#" \
+ | grep -v "^$" `
+
+
+if [ $1 ] ; then
+ unixcomputers=$1
+fi;
###
#disse bør kunne varieres fra fs til fs?
-#disse bør flyttes ut i egen fil som kan editeres fra web kanskje?
-maksantallfulle=2 #hvor mange fulle vi tar vare på
+maksantallfulle=3 #hvor mange fulle vi tar vare på
dagermellomfulle=30 #antall dager før det er på tide med ny full
logw=40
###
if [ "$backuplevel" = "daglig" ] || [ "$backuplevel" = "incremental" ]
then
- forrige=`cat ../.date`
- forrigecmd="--newer=\"$forrige\""
+ lastd=`cat ../.date`
+ lastcmd="--newer=\"$lastd\""
else
- forrigecmd=""
+ lastcmd=""
+ fi
+
+ #if this client has a special tar
+ #we need to find a better solution to this conf-issue
+ if [ -f $confdir/tar.$computer ] ; then
+ tar=`cat $confdir/tar.$computer`
+ else
+ tar=tar
fi
- #Prøver å ta backup med tar
- if `ssh $computer "cd $filesystem ;\
- tar cfl - . $forrigecmd \
- --exclude-from=/tmp/.backup/exclude \
+ #expand the exclude-path for use with tar
+ exf=`ssh $computer "ls ~/.backup/exclude"`
+
+ #We try to run tar on the remote computer
+ # C is instead of 'cd $filesystem'
+ # - is 'this directory'
+ # l is 'stay in local filesystem
+ echo "cmdline: $tar --one-file-system -cfC - $filesystem . $lastcmd --exclude-from=$exf | gzip"
+ if `ssh $computer "$tar --one-file-system -cfC - $filesystem . $lastcmd \
+ --exclude-from=$exf \
| gzip" \
| dd of=$DATE.tmp 2>/dev/null`
then
#perhaps it did work
mv $DATE.tmp $DATE.tgz
- #make a filelist and update the datefile
+ #make a filelist.
+ #update the datefile if the filelist is ok.
tar tvfz $DATE.tgz > $DATE.idx 2>&1 &&
echo $DATEs > ../.date &&
touch -t $DATE ../.date
grep -v ^d $DATE.idx | sort -n -r +2 > $DATE.sdx
#fix perm
- chmod 600 *tgz
- chmod 644 *sdx *idx
+ chmod 600 *tgz #only for us
+ chmod 644 *sdx *idx 2>/dev/null #everyone can read
else
#it did not work
rm $DATE.tmp 2>/dev/null
- echo "$backuplevel backup of $computer:$filesystem failed"
+ echo "$backuplevel backup of $computer:$filesystem failed and deleted"
+ # TODO send mail!
fi
}
#Løper gjennom listen av unixmaskiner som vi skal ta backup av
for computer in $unixcomputers
do
+(
+
+ # Try to SSH to the computer without entering a password.
+ if `ssh -n -o NumberOfPasswordPrompts=0 $computer /bin/true`; then
+ echo "Passwordless SSH to $computer works."
+ else
+ echo "Could not use passwordless SSH to $computer. Exiting."
+ exit 1;
+ fi
#tømmer variabelen for sikkerhets skyld
filesystems=""
#Sjekker nest siste felt i fstab. Om det er 0 tar vi ikke backup
filesystems=`ssh -n $computer "cat /etc/fstab" \
| grep -v nfs \
- | grep -v ^# \
+ | grep -v "^#" \
+ | grep -v "^$" \
| awk '{ if ( $(NF-1) != "0" ) print $2}' `
#clean up our dir at this client
- ssh $computer "rm -rf /tmp/.backup ; mkdir -m 700 /tmp/.backup"
+ ssh $computer "rm -r ~/.backup ; mkdir -m 700 ~/.backup"
#try to copy $exclude to $computer
- scp $exclude $computer:/tmp/.backup/exclude ||
- echo "Vi klarte ikke kopiere over exclude.txt til $computer :("
+ scp $exclude $computer:~/.backup/exclude ||
+ echo "could not copy exclude.txt to $computer :("
#try to copy preeexec and postexec if they exist
[ -f $confdir/preexec.$computer ] &&
- scp $confdir/preexec.$computer $computer:/tmp/.backup/preexec
+ scp $confdir/preexec.$computer $computer:~/.backup/preexec
[ -f $confdir/postexec.$computer ] &&
- scp $confdir/postexec.$computer $computer:/tmp/.backup/postexec
+ scp $confdir/postexec.$computer $computer:~/.backup/postexec
#try to run preexec if it exist
- ssh $computer "[ -f /tmp/.backup/preexec ] &&
- /bin/bash -x /tmp/.backup/preexec"
+ ssh $computer "[ -f ~/.backup/preexec ] && /bin/bash -x ~/.backup/preexec"
for filesystem in $filesystems
do
mkdir -m 755 -p $storagedir/$computer/$sfilesystem/{full,daglig} 2>/dev/null
#
- echo $filesystem > $storagedir/$computer/$sfilesystem.name
- chmod 644 $storagedir/$computer/$sfilesystem.name
+ echo $filesystem > ${storagedir}/${computer}/.${sfilesystem}.name
+ chmod 644 ${storagedir}/${computer}/.${sfilesystem}.name
#set default backuplevel
backuplevel=daglig
#sjekker om det er på tide med en full
if
- [ -z `find $storagedir/$computer/$sfilesystem/full/ -name \*tgz -mtime -$dagermellomfulle` ]
+ [ -z "`find $storagedir/$computer/$sfilesystem/full/ -name \*tgz -mtime -$dagermellomfulle`" ]
then
backuplevel=full
fi
- #gå ned i rett katalog
- cd $storagedir/$computer/$sfilesystem/$backuplevel
+ #gå ned i rett katalog, eller dø
+ # TODO bør sende mail om dette skjer!
+ cd $storagedir/$computer/$sfilesystem/$backuplevel || exit 1
#perform the actual backup
backup
+ # Sjekk om det skal være et annet antall fulle backuper av en boks
+ if [ -f $confdir/maksfulle.$computer ] ; then
+ mf=$((`cat $confdir/maksfulle.$computer`+1))
+ else
+ mf=$(($maksantallfulle+1))
+ fi
+
#delete complete backups
- mf=$(($maksantallfulle+1))
for full in `ls -1t $storagedir/$computer/$sfilesystem/full/*tgz | tail +$mf`
do
- prefix=`echo $full|cut -d . -f 1`
+ prefix=`echo $full | sed "s/\.[^.]*$//"`
echo "$computer:$filesystem sletter full $prefix (for mange)"
rm $prefix*
done
oldf=`ls -t1 $storagedir/$computer/$sfilesystem/full/*tgz | tail -1`
find \
$storagedir/$computer/$sfilesystem/daglig \
+ -type f \
\! -newer $oldf \
-exec rm {} \;
- #denne funker bare med gnu find
- #-printf "$computer:$filesystem sletter daglig %f (for gammel)\n" \
-
+# #denne funker bare med gnu find
+# #-printf "$computer:$filesystem sletter daglig %f (for gammel)\n"
done
#try to run postexec if it exist
- ssh $computer "[ -f /tmp/.backup/postexec ] &&
- /bin/bash -x /tmp/.backup/postexec"
+ ssh $computer "[ -f ~/.backup/postexec ] && /bin/bash -x ~/.backup/postexec"
+
+)
+done &
-done
+wait
#create report
-/home/backup/report.sh $storagedir > /tmp/report.txt
-[ ! -z $remotestat ] && scp /tmp/report.txt $remotestat
+# (Hasn't been working for years -berge)
+#/home/backup/report.sh $storagedir > /tmp/report.txt
+#[ ! -z $remotestat ] && scp /tmp/report.txt $remotestat
###
+# print diskusage to logfile
+df -k
+
date
projects / backup.sh / blobdiff