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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!
#
# Usage:
#
# ./installer.sh nc-backup.sh <IP> (<img>)
#
# See installer.sh instructions for details
#
# More at https://ownyourbits.com/2017/02/13/nextcloud-ready-raspberry-pi-image/
#
DESTDIR_=/media/USBdrive/ncp-backups
INCLUDEDATA_=no
COMPRESS_=no
BACKUPLIMIT_=4
DESCRIPTION="Backup this NC instance to a file"
install()
{
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_$( date +"%Y%m%d" ).bak
OCC="sudo -u www-data php /var/www/nextcloud/occ"
DATADIR=$( $OCC config:system:get datadirectory ) || {
echo "Error reading data directory. Is NextCloud running and configured?";
exit 1;
}
cleanup(){ local RET=$?; rm -f "${DBBACKUP}" ; $OCC maintenance:mode --off; exit $RET; }
fail() { local RET=$?; echo "Abort..." ; rm -f "${DBBACKUP}" "${DESTFILE}"; $OCC maintenance:mode --off; exit $RET; }
trap cleanup EXIT
trap fail INT TERM HUP ERR
echo "check free space..." # allow at least ~500 MiB for backups without data
mkdir -p "$DESTDIR"
[[ "$INCLUDEDATA" == "yes" ]] && SIZE=$( du -s "$DATADIR" | awk '{ print $1 }' ) || SIZE=500000
FREE=$( df "$DESTDIR" | tail -1 | awk '{ print $4 }' )
[ $SIZE -ge $FREE ] && {
echo "free space check failed. Need $( du -sh "$DATADIR" | awk '{ print $1 }' )";
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
cd /var/www || exit 1
$OCC maintenance:mode --on
echo "backup database..."
mysqldump -u root --single-transaction nextcloud > "$DBBACKUP"
# files
echo "backup base files..."
mkdir -p "$DESTDIR"
tar --exclude "nextcloud/data/*/files/*" \
--exclude "nextcloud/data/.opcache" \
--exclude "nextcloud/data/{access,error,nextcloud}.log" \
--exclude "nextcloud/data/access.log" \
--exclude "nextcloud/data/ncp-update-backups/" \
-cf "$DESTFILE" "$DBBACKUP" nextcloud/ \
|| {
echo "error generating backup"
exit 1
}
rm "$DBBACKUP"
[[ "$INCLUDEDATA" == "yes" ]] && {
echo "backup data files..."
tar --exclude "data/.opcache" \
--exclude "data/{access,error,nextcloud}.log" \
--exclude "data/access.log" \
--exclude "data/ncp-update-backups/" \
-rf "$DESTFILE" -C "$DATADIR"/.. "$( basename "$DATADIR" )" \
|| {
echo "error generating backup"
exit 1
}
}
[[ "$COMPRESS" == "yes" ]] && {
echo "compressing backup file..."
tar -czf "${DESTFILE}.gz" -C "$( dirname "$DESTFILE" )" "$( basename "$DESTFILE" )"
rm "$DESTFILE"
DESTFILE="${DESTFILE}.gz"
}
chmod 600 "$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
|
