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Diffstat (limited to 'handlers/rub')
| -rw-r--r-- | handlers/rub | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/handlers/rub b/handlers/rub new file mode 100644 index 0000000..95ed3b1 --- /dev/null +++ b/handlers/rub @@ -0,0 +1,221 @@ +# +# backupninja handler to do incremental backups using +# rsync and hardlinks, based on +# +# http://www.mikerubel.org/computers/rsync_snapshots/ +# +# feedback: rhatto at riseup.net | gpl +# +# config file options +# ------------------- +# +# [general] +# log = rsync log file +# partition = partition where the backup lives +# fsck = set to 1 if fsck should run on $partition after the backup is made +# read_only = set to 1 if $partition is mounted read-only +# mountpoint = backup partition mountpoint or backup main folder +# backupdir = folder relative do $mountpoint where the backup should be stored +# days = number of backup increments (min = 5) +# lockfile = lockfile to be kept during backup execution +# +# [source] +# include = include folder on backup +# exclude = exclude folder on backup +# from = local or remote +# ssh = ssh command line (remote only) +# rsync = rsync command line +# exclude_vserver = vserver-name (valid only if vservers = yes on backupninja.conf) +# +# [services] +# initscripts = absolute path where scripts are located +# service = script name to be stoped at the begining of the backup and started at its end +# +# You dont need to manually specify vservers using "include = /vservers". +# They are automatically backed-up if vserver is set to "yes" on your backupninja.conf. +# + +setsection general +getconf log /var/log/backupninja-rub.log +getconf partition +getconf fsck +getconf read_only +getconf mountpoint +getconf backupdir +getconf rotate +getconf days +getconf lockfile + +setsection source +getconf from local +getconf rsync "rsync -av --delete" +getconf ssh ssh +getconf user +getconf host +getconf include +getconf exclude +getconf exclude_vserver + +setsection services +getconf initscripts +getconf service + +backupdir="$mountpoint/$backupdir" + +if [ ! -d "$backupdir" ]; then + error "Backupdir $backupdir does not exist" + exit 1 +fi + +if [ -z "$days" ]; then + keep="4" +else + keep="`echo $days - 1 | bc -l`" +fi + +if [ ! -z "$lockfile" ]; then + touch $lockfile || warning "Could not create lockfile $lockfile" +fi + +for path in $exclude; do + EXCLUDES="$EXCLUDES --exclude=$path" +done + +if [ ! -z "$service" ]; then + for daemon in $service; do + info "Stopping service $daemon..." + $initscripts/$daemon stop + done +fi + +function rotate { + + # please use an absolute path + + if [[ "$2" < 4 ]]; then + error "Rotate: minimum of 4 rotations" + exit 1 + fi + + if [ -d $1.$2 ]; then + mv $1.$2 $1.tmp + fi + + for ((n=`echo "$2 - 1" | bc`; n >= 0; n--)); do + if [ -d $1.$n ]; then + dest=`echo "$n + 1" | bc` + mv $1.$n $1.$dest + touch $1.$dest + fi + done + + if [ -d $1.tmp ]; then + mv $1.tmp $1.0 + fi + + if [ -d $1.1 ]; then + cp -alf $1.1/. $1.0 + fi + +} + +echo "Starting backup at `date`" >> $log + +if [ "$read_only" == "1" ] || [ "$read_only" == "yes" ]; then + if [ -d "$mountpoint" ]; then + mount -o remount,rw $mountpoint + if (($?)); then + error "Could not mount $mountpoint" + exit 1 + fi + fi +fi + +if [ "$vservers_are_available" == "yes" ]; then + + # sane permission on backup + mkdir -p $backupdir/$VROOTDIR + chmod 000 $backupdir/$VROOTDIR + + for candidate in `ls $VROOTDIR`; do + found_excluded_vserver="0" + if [ "$candidate" != "lost+found" ]; then + for excluded_vserver in $exclude_vserver; do + if [ "$excluded_vserver" == "$candidate" ]; then + found_excluded_vserver="1" + break + fi + done + if [ "$found_excluded_vserver" == "0" ]; then + include="$include $VROOTDIR/$candidate" + fi + fi + done +fi + +for SECTION in $include; do + + section="`basename $SECTION`" + + if [ ! -d "$backupdir/$SECTION/$section.0" ]; then + mkdir -p $backupdir/$SECTION/$section.0 + fi + + info "Rotating $backupdir/$SECTION/$section..." + echo "Rotating $backupdir/$SECTION/$section..." >> $log + rotate $backupdir/$SECTION/$section $keep + info "Syncing $SECTION on $backupdir/$SECTION/$section.0..." + + if [ "$from" == "local" ]; then + debug $rsync $EXCLUDES /$SECTION/ $backupdir/$SECTION/$section.0/ + $rsync $EXCLUDES /$SECTION/ $backupdir/$SECTION/$section.0/ >> $log + if [ "$?" != "0" ]; then + warning "Rsync error when trying to transfer $SECTION" + fi + elif [ "$from" == "remote" ]; then + if [ -z "$user" ] || [ -z "$host" ]; then + error "Config file error: either user or host was not specified" + exit 1 + else + debug $rsync $EXCLUDES -e "$ssh" $user@$host:/$SECTION/ $backupdir/$SECTION/$section.0 + $rsync $EXCLUDES -e "$ssh" $user@$host:/$SECTION/ $backupdir/$SECTION/$section.0 >> $log + if [ "$?" != "0" ]; then + warning "Rsync error when trying to transfer $SECTION" + fi + fi + else + error "Invalid source $from" + exit 1 + fi + + touch $backupdir/$SECTION/$section.0 + +done + +if [ "$read_only" == "1" ] || [ "$read_only" == "yes" ]; then + mount -o remount,ro $mountpoint +fi + +if [ "$fsck" == "1" ] || [ "$fsck" == "yes" ]; then + umount $mountpoint + if (($?)); then + warning "Could not umount $mountpoint to run fsck" + else + fsck -v -y $partition >> $log + mount $mountpoint + fi +fi + +if [ ! -z "$service" ]; then + for daemon in $service; do + info "Starting service $daemon..." + $initscripts/$daemon start + done +fi + +if [ ! -z "$lockfile" ]; then + rm $lockfile || warning "Could not remove lockfile $lockfile" +fi + +echo "Finnishing backup at `date`" >> $log + |