X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=backup.sh;h=adeea18272ce1860731430b7fb3e4b6434c2497e;hb=6d730569affcb76153e16c99c568663932c6dbd1;hp=7457a34fdcebc5a73037886c459180329a10fe4c;hpb=a43c445820a18e5acec38aba996c82b3c1363e94;p=backup.sh

diff --git a/backup.sh b/backup.sh
index 7457a34..adeea18 100755
--- a/backup.sh
+++ b/backup.sh
@@ -1,37 +1,54 @@
-#!/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
@@ -40,43 +57,73 @@ DATEs=`date "+%Y-%m-%d %H:%M"`       #passer for bruk med tar
 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=""
@@ -84,77 +131,103 @@ do
  #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