-#!/bin/bash
+#!/bin/sh
-PATH=/local/bin:$PATH
+#dirs
+confdir=/home/backup/conf/ #configuration files
+storagedir=/backup #mountpoint of huge disc
+###
+
+#exclude-pattern
+exclude=$confdir/exclude
+[ ! -f $exclude ] && printf "tmp\ncore\n" > $exclude
+###
+
+#syntax of remotestat:
+#hostname:/directory/
+remotestatf=$confdir/remotestat
+[ -f $remotestatf ] && remotestat=`cat $remotestatf`
+###
+
+PATH=/local/bin:$PATH:/store/bin
export PATH
-exclude=/home/backup/exclude.txt
-echo -n "Starter... "
+#start the logfile
date
-
-#Skriver litt til loggefilen
echo
-echo "Slik ser regexpen som forteller hva vi ikke skal ta backup av:"
+echo "Exclude pattern:"
cat $exclude
echo
echo
-#newgrp itk
umask 027
-#liste over maskinene vi tar backup av. (space mellom maskinnavn)
-computers="cirkus backup josef"
-#for debug
-#computers="josef"
+# The computers we want to back up
+unixcomputers=`cat $confdir/computers.unix \
+ | grep -v "^#" \
+ | grep -v "^$" `
+
+
+if [ $1 ] ; then
+ unixcomputers=$1
+fi;
###
-#disse bør kunne varieres fra fs til fs
-maksantallfulle=2 #hvor mange fulle vi tar vare på
-#maksantalldaglige=30 #hvor mange daglige vi tar vare på
+#disse bør kunne varieres fra fs til fs?
+maksantallfulle=3 #hvor mange fulle vi tar vare på
dagermellomfulle=30 #antall dager før det er på tide med ny full
+logw=40
###
#lager datovariabeler
-DATE=`date "+%Y%m%d%H%M"` #passer for bruk med touch
-DATEs=`date "+%Y-%m-%d %H:%M"` #passer for bruk med tar
+DATE=`date "+%Y%m%d%H%M"` #format: touch
+DATEs=`date "+%Y-%m-%d %H:%M"` #format: tar
###
#selve backupen
backup()
{
- if [ "$backuplevel" = "daglig" ]
+ printf "%-${logw}s %s\n" "$computer:$filesystem" "$backuplevel backup"
+
+ if [ "$backuplevel" = "daglig" ] || [ "$backuplevel" = "incremental" ]
then
- forrige=`cat ../.dato`
- 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
- if `ssh $computer "cd $filesystem ;\
- tar cfl - . $forrigecmd \
- --exclude-from=$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
- #Det gikk kanskje bra
+ #perhaps it did work
mv $DATE.tmp $DATE.tgz
- #lage listefil
- tar tvfz $DATE.tgz > $DATE.idx 2>&1
- grep -v ^d $DATE.idx | sort -n -r +2 > $DATE.sdx
+ #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
- #oppdatere datofil
- echo $DATEs > ../.dato
- touch -t $DATE ../.dato
+ #make a sortet filelist
+ grep -v ^d $DATE.idx | sort -n -r +2 > $DATE.sdx
- #fikse rettigheter
- chmod 600 *tgz
- chmod 644 *sdx *idx
+ #fix perm
+ chmod 600 *tgz #only for us
+ chmod 644 *sdx *idx 2>/dev/null #everyone can read
else
- #Det gikk ikke bra
- rm $DATE.tmp
- echo "$backuplevel backup av $computer:$filesystem gikk ikke bra"
+ #it did not work
+ rm $DATE.tmp 2>/dev/null
+ echo "$backuplevel backup of $computer:$filesystem failed and deleted"
+ # TODO send mail!
fi
+
}
-for computer in $computers
+#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}' `
- #for debugging
- #filesystems="/"
+ #clean up our dir at this client
+ ssh $computer "rm -r ~/.backup ; mkdir -m 700 ~/.backup"
+
+ #try to copy $exclude to $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:~/.backup/preexec
+ [ -f $confdir/postexec.$computer ] &&
+ scp $confdir/postexec.$computer $computer:~/.backup/postexec
+
+ #try to run preexec if it exist
+ ssh $computer "[ -f ~/.backup/preexec ] && /bin/bash -x ~/.backup/preexec"
for filesystem in $filesystems
do
- #lager en variant uten tegnet "/"
- sfilesystem=`echo $filesystem | tr '/' '_'`
+ #lager en variant uten tegnet "/" eller $ (gjelder NT)
+ sfilesystem=`echo $filesystem | tr '\/\$' '__'`
+
+ #lager det som trengs av kataloger
+ mkdir -m 755 -p $storagedir/$computer/$sfilesystem/{full,daglig} 2>/dev/null
#
- echo $filesystem > /backup/$computer/$sfilesystem.navn
- chmod 644 /backup/$computer/$sfilesystem.navn
+ echo $filesystem > ${storagedir}/${computer}/.${sfilesystem}.name
+ chmod 644 ${storagedir}/${computer}/.${sfilesystem}.name
- #standard backuplevel. full og daglig er eneste muligheter
+ #set default backuplevel
backuplevel=daglig
- #backuplevel=full
-
- #lager det som trengs av kataloger
- mkdir -m 755 -p /backup/$computer/$sfilesystem/{full,daglig} 2>/dev/null
- #Bør bare skje ved første gangs kjøring for dette fs
- if [ ! -f /backup/$computer/$sfilesystem/.dato ]
+ if [ ! -f $storagedir/$computer/$sfilesystem/.date ]
then
+ #take the first full backup of this filesystem on this computer
backuplevel=full
- echo $DATEs > /backup/$computer/$sfilesystem/.dato
- echo "$computer:$filesystem datofil laget"
- echo "$computer:$filesystem trenger full pga ingen fra foer"
+ echo $DATEs > $storagedir/$computer/$sfilesystem/.date
fi
#sjekker om det er på tide med en full
if
- [ -z `find /backup/$computer/$sfilesystem/full/ -name \*tgz -mtime -$dagermellomfulle` ]
+ [ -z "`find $storagedir/$computer/$sfilesystem/full/ -name \*tgz -mtime -$dagermellomfulle`" ]
then
- echo "$computer:$filesystem trenger full pga lenge siden sist"
backuplevel=full
fi
- #gå ned i rett katalog
- cd /backup/$computer/$sfilesystem/$backuplevel
+ #gå ned i rett katalog, eller dø
+ # TODO bør sende mail om dette skjer!
+ cd $storagedir/$computer/$sfilesystem/$backuplevel || exit 1
- #selve backupen
+ #perform the actual backup
backup
- echo "$computer:$filesystem sletter fulle slik at vi ikke har mer enn 2"
- mf=$(($maksantallfulle+1))
- for full in `ls -1t /backup/$computer/$sfilesystem/full/*tgz | tail +$mf`
+ # 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
+ for full in `ls -1t $storagedir/$computer/$sfilesystem/full/*tgz | tail +$mf`
do
- prefix=`echo $full|cut -d . -f 1`
- echo "$computer:$filesystem sletter $prefix"
+ prefix=`echo $full | sed "s/\.[^.]*$//"`
+ echo "$computer:$filesystem sletter full $prefix (for mange)"
rm $prefix*
done
- echo "$computer:$filesystem ferdig med slett av fulle"
- echo "$computer:$filesystem slette daglige eldre enn eldste fulle"
- eldste=`ls -t1 /backup/$computer/$sfilesystem/full/*tgz | tail -1`
+ #delete incremental backups older than the oldest complete backup
+ oldf=`ls -t1 $storagedir/$computer/$sfilesystem/full/*tgz | tail -1`
find \
- /backup/$computer/$sfilesystem/daglig \
- \! -newer $eldste \
- -print \
+ $storagedir/$computer/$sfilesystem/daglig \
+ -type f \
+ \! -newer $oldf \
-exec rm {} \;
- echo "$computer:$filesystem ferdig med slett av gamle daglige"
-
+# #denne funker bare med gnu find
+# #-printf "$computer:$filesystem sletter daglig %f (for gammel)\n"
done
-done
+ #try to run postexec if it exist
+ ssh $computer "[ -f ~/.backup/postexec ] && /bin/bash -x ~/.backup/postexec"
+
+)
+done &
+
+wait
+
+#create report
+# (Hasn't been working for years -berge)
+#/home/backup/report.sh $storagedir > /tmp/report.txt
+#[ ! -z $remotestat ] && scp /tmp/report.txt $remotestat
+###
-#Finne de backupene som har tryna og
-#lage en webside med de
-/home/backup/finn_ufullstendige.sh
+# print diskusage to logfile
+df -k
-echo -n "Ferdig... "
date
projects / backup.sh / blobdiff