X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=backup.sh;h=6f67ee024b5fecc2b620f33b4f3a9f3d78a2def4;hb=e4df5a6ad04b19f05b0a0c6c50a5993ca0b85573;hp=9edfe425e6f14f5024b4211e02a9b28b7257d764;hpb=47a803e1dc4923df09a78283197cdb19811cd988;p=backup.sh

diff --git a/backup.sh b/backup.sh
index 9edfe42..6f67ee0 100755
--- a/backup.sh
+++ b/backup.sh
@@ -1,36 +1,47 @@
 #!/bin/bash
 
-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
 
-#Maskiner vi skal ta backup av
-unixcomputers=`cat /home/backup/computers.unix`
-ntcomputers=`cat /home/backup/computers.nt`
+# The computers we want to back up
+unixcomputers=`cat $confdir/computers.unix`
+###
 
 #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
-#maksantalldaglige=30       #hvor mange daglige 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
@@ -39,41 +50,55 @@ DATEs=`date "+%Y-%m-%d %H:%M"`       #passer for bruk med tar
 backup()
 {
 
- echo "$computer:$filesystem tar $backuplevel backup"
+ printf "%-${logw}s %s\n" "$computer:$filesystem" "$backuplevel backup"
 
- if [ "$backuplevel" = "daglig" ]
+ if [ "$backuplevel" = "daglig" ] || [ "$backuplevel" = "incremental" ]
  then
-  forrige=`cat ../.dato`
-  forrigecmd=--newer=\"$forrige\"
+  lastd=`cat ../.date`
+  lastcmd="--newer=\"$lastd\""
  else
-  forrigecmd=""
+  lastcmd=""
  fi
 
- #Prøver å ta backup med tar
- if `ssh $computer "cd $filesystem ;\
-     tar cfl - . $forrigecmd \
-      --exclude-from=/tmp/.backup/exclude \
+ #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
+
+ #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
+ if `ssh $computer "$tar cfCl - $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 og oppdater datofil om det gikk greit
+  #make a filelist.
+  #update the datefile if the filelist is ok.
   tar tvfz $DATE.tgz > $DATE.idx 2>&1 &&
-    echo $DATEs > ../.dato            &&
-    touch -t $DATE ../.dato
+    echo $DATEs > ../.date            &&
+    touch -t $DATE ../.date
 
-  #lage sortert listefil
+  #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"
  fi
 
 }
@@ -91,93 +116,89 @@ do
   | grep -v ^# \
   | awk '{ if ( $(NF-1) != "0" ) print $2}' `
 
- #Renske opp i katalogen vår på klienten
- ssh $computer "rm -rf /tmp/.backup ; mkdir -m 700 /tmp/.backup"
+ #clean up our dir at this client
+ ssh $computer "rm -r ~/.backup ; mkdir -m 700 ~/.backup"
 
- #Prøver å kopiere over $exclude til $computer
- scp $exclude $computer:/tmp/.backup/exclude ||
-    echo "Vi klarte ikke kopiere over exclude.txt til $computer :("
+ #try to copy $exclude to $computer
+ scp $exclude $computer:~/.backup/exclude ||
+    echo "could not copy exclude.txt to $computer :("
 
- #Prøver å kopiere over preeexec og postexec om de finnes
- [ -f /backup/$computer/.preexec  ] &&
-         scp /backup/$computer/.preexec  $computer:/tmp/.backup/preexec
- [ -f /backup/$computer/.postexec ] &&
-         scp /backup/$computer/.postexec $computer:/tmp/.backup/postexec
+ #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
 
- #Prøver å kjøre preexec om den finnes
- ssh $computer "[ -f /tmp/.backup/preexec ] && 
-                   /bin/bash -x /tmp/.backup/preexec"
+ #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 "/" 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
+  cd $storagedir/$computer/$sfilesystem/$backuplevel
 
-  #selve backupen
+  #perform the actual backup
   backup
 
-  #Sjekker om det er på tide å slette noen fulle backuper
+  #delete complete backups
   mf=$(($maksantallfulle+1))
-  for full in `ls -1t /backup/$computer/$sfilesystem/full/*tgz | tail +$mf`
+  for full in `ls -1t $storagedir/$computer/$sfilesystem/full/*tgz | tail +$mf`
   do
    prefix=`echo $full|cut -d . -f 1`
    echo "$computer:$filesystem sletter full $prefix (for mange)"
    rm $prefix*
   done
 
-  #Sjekker om det er på tide å slette noen daglige backuper
-  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 $eldste \
-     -printf "$computer:$filesystem sletter daglig %f (for gammel)\n" \
+     $storagedir/$computer/$sfilesystem/daglig \
+     -type f \
+     \! -newer $oldf \
      -exec rm {} \;
+     #denne funker bare med gnu find
+     #-printf "$computer:$filesystem sletter daglig %f (for gammel)\n" \
 
  done
 
- #Prøver å kjøre postexec om den finnes
- ssh $computer "[ -f /tmp/.backup/postexec ] &&
-                   /bin/bash -x /tmp/.backup/postexec"
+ #try to run postexec if it exist
+ ssh $computer "[ -f ~/.backup/postexec ] && /bin/bash -x ~/.backup/postexec"
 
 done
 
-#Finne de backupene som har tryna og 
-#lage en webside med de
-/home/backup/finn_ufullstendige.sh
+#create report
+/home/backup/report.sh $storagedir > /tmp/report.txt
+#[ ! -z $remotestat ] && scp /tmp/report.txt $remotestat
+###
 
-#Lage søkbar indeks over listefilene
-/home/backup/indekser.sh
+# print diskusage to logfile
+df -k
 
-echo -n "Ferdig... "
 date