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|
#!/bin/bash
# Nextcloud backups
#
# Copyleft 2017 by Ignacio Nunez Hernanz <nacho _a_t_ ownyourbits _d_o_t_ com>
# GPL licensed (see end of file) * Use at your own risk!
#
# More at https://ownyourbits.com/2017/02/13/nextcloud-ready-raspberry-pi-image/
#
install()
{
apt-get update
apt-get install -y --no-install-recommends pigz
cat > /usr/local/bin/ncp-backup <<'EOF'
#!/bin/bash
set -eE
destdir="${1:-/media/USBdrive/ncp-backups}"
includedata="${2:-no}"
compress="${3:-no}"
backuplimit="${4:-0}"
destfile="$destdir"/nextcloud-bkp_$( date +"%Y%m%d_%s" ).tar
dbbackup=nextcloud-sqlbkp_$( date +"%Y%m%d" ).bak
occ="sudo -u www-data php /var/www/nextcloud/occ"
[[ -f /.docker-image ]] && basedir=/data || basedir=/var/www
[[ "$compress" == "yes" ]] && destfile="$destfile".gz
datadir=$( $occ config:system:get datadirectory ) || {
echo "Error reading data directory. Is NextCloud running and configured?";
exit 1;
}
cleanup(){ local ret=$?; rm -f "${dbbackup}" ; $occ maintenance:mode --off; exit $ret; }
fail() { local ret=$?; echo "Abort..." ; rm -f "${dbbackup}" "${destfile}"; $occ maintenance:mode --off; exit $ret; }
trap cleanup EXIT
trap fail INT TERM HUP ERR
echo "check free space..." # allow at least ~500 extra MiB
mkdir -p "$destdir"
nsize=$(du -sb "$basedir/nextcloud" | awk '{ print $1 }')
[[ -d "$basedir/nextcloud"/data ]] && \
dsize=$(du -sb "$basedir/nextcloud"/data | awk '{ print $1 }')
margin=$((500*1024*1024)) # safety margin for database and some extra
if [[ "$includedata" == "yes" ]]; then
datasize=$(du -sb "$datadir" | awk '{ print $1 }')
size=$((nsize - dsize + margin + datasize))
else
size=$((nsize - dsize + margin))
fi
free=$( df -B1 "$destdir" | tail -1 | awk '{ print $4 }' )
[ $size -ge $free ] && {
echo "free space check failed. Need $size Bytes";
exit 1;
}
# delete older backups
[[ $backuplimit != 0 ]] && {
numbkps=$( ls "$destdir"/nextcloud-bkp_* 2>/dev/null | wc -l )
[[ $numbkps -ge $backuplimit ]] && \
ls -t $destdir/nextcloud-bkp_* | tail -$(( numbkps - backuplimit + 1 )) | while read -r f; do
echo "clean up old backup $f"
rm "$f"
done
}
# database
$occ maintenance:mode --on
cd "$basedir" || exit 1
echo "backup database..."
mysqldump -u root --single-transaction nextcloud > "$dbbackup"
# files
echo "backup files..."
[[ "$includedata" == "yes" ]] && data="$(basename "$datadir")"
[[ "$compress" == "yes" ]] && compress_arg="-I pigz"
mkdir -p "$destdir"
tar $compress_arg -cf "$destfile" \
\
"$dbbackup" \
\
--exclude "$data/.opcache" \
--exclude "$data/{access,error,nextcloud}.log" \
--exclude "$data/access.log" \
--exclude "$data/ncp-update-backups" \
-C "$(dirname "$datadir"/)" $data \
\
--exclude "nextcloud/data/*/files/*" \
--exclude "nextcloud/data/.opcache" \
--exclude "nextcloud/data/{access,error,nextcloud}.log" \
--exclude "nextcloud/data/access.log" \
--exclude "nextcloud/data/appdata_*/preview/*" \
--exclude "nextcloud/data/*/uploads/*" \
--exclude "nextcloud/data/*/cache/*" \
--exclude "nextcloud/data/*/files_trashbin/*" \
--exclude "nextcloud/data/*/files_versions/*" \
--exclude "nextcloud/data/ncp-update-backups" \
-C $basedir nextcloud/ \
|| {
echo "error generating backup"
exit 1
}
rm "$dbbackup"
chmod 640 "$destfile"
chown :www-data "$destfile"
echo "backup $destfile generated"
EOF
chmod +x /usr/local/bin/ncp-backup
}
configure()
{
ncp-backup "$DESTDIR" "$INCLUDEDATA" "$COMPRESS" "$BACKUPLIMIT"
}
# License
#
# This script is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this script; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
# Boston, MA 02111-1307 USA
|
