Added script and configuration.
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Stephan
195
cloud_backup.sh
Executable file
195
cloud_backup.sh
Executable file
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#!/bin/bash
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## File: cloud_backup.sh
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## This automates backup of your nextcloud.
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## Run as a backup user with the group rights of www-data and the ricght to sudo as that user.
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## Within mariadb an user should exist, which has read permissions to everything, but only that!
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source ~/.config/cloud_backup.conf
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## Returns the binaries full path if existent.
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function which_is() {
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declare -n RETVAL=$1; # declare RETVAL a reference of $1
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local EXECUTABLE=$2;
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local WITHFULLPATH=$(which ${EXECUTABLE} 2>/dev/null);
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if [ -x "$WITHFULLPATH" ]; then
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RETVAL="$WITHFULLPATH";
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return 0;
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else
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RETVAL="$EXECUTABLE not found!";
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return 1;
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fi
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}
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## Log levels for messages
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LLMUTE=0
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LLMDTRY=1
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LLERROR=2
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LLWARNING=3
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LLINFO=4
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LLDEBUG=5
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## Actual log level of the logger used
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LOGLEVEL=$LLDEBUG
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## Write log of the script
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function logger() {
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local LOGGINGLEVEL=$1;
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local LOGMESSAGE=$2;
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local _NOW=$($DATE +%Y%m%d_%H:%M:%S);
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if [[ $LOGLEVEL -ge $LOGGINGLEVEL ]]; then
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echo "cloud_backup $_NOW: ${LOGMESSAGE}" >> $LOGFILE;
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fi
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if [[ $LOGLEVEL -eq $LLDEBUG ]]; then
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echo "cloud_backup $_NOW: ${LOGMESSAGE}";
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fi
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}
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## updates nextcloud files cache for a given path
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## $1 Path to update nextcloud filescache on.
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## Attention: path is relative to nextcloud data folder without '/'!
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## return 0 in case of success, 1 on fail.
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update_filescache() {
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local CLOUDPATH=$1;
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logger $LLINFO "Updating file cache for $CLOUDPATH.";
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logger $LLDEBUG "$SUDO -u www-data $PHP ${CONFIG_NC_BASE}occ files:scan --path=\"$CLOUDPATH\"";
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$SUDO -u www-data $PHP ${CONFIG_NC_BASE}occ files:scan --path="$CLOUDPATH";
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return $?;
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}
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## Cleanup and exit with exit value given.
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function clean_up() {
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local EXITVAL=$1;
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logger $LLINFO "Cleaning up on exit $EXITVAL.";
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# re-enable the cloud under all circumstances!
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logger $LLINFO "Re-enabling cloud, switching maintenance mode off.";
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$SUDO -u www-data $PHP ${CONFIG_NC_BASE}occ maintenance:mode --off;
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logger $LLINFO "Making log file $CONFIG_NC_LOGPATH visible to cloud.";
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update_filescache ${CONFIG_NC_LOGPATH}; # make logfile visible in cloud
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if [ $? -ne 0 ]; then logger $LLWARNING "Could not update files cache of nextcloud!"; fi
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logger $LLMDTRY "Exiting on $EXITVAL.";
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exit $EXITVAL;
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}
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#echo "Levels $LLMUTE $LLMDTRY $LLERROR $LLWARNING $LLINFO $LLDEBUG Loglevel: $LOGLEVEL";
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## Check binaries availability
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which_is SUDO 'sudo';
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if [ $? -ne 0 ]; then echo $SUDO; exit 1; fi
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which_is DATE 'date';
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if [ $? -ne 0 ]; then echo $DATE; exit 1; fi
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which_is MYSQLDUMP 'mysqldump';
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if [ $? -ne 0 ]; then echo $MYSQLDUMP; exit 1; fi
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which_is RSYNC 'rsync';
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if [ $? -ne 0 ]; then echo $RSYNC; exit 1; fi
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which_is LN 'ln';
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if [ $? -ne 0 ]; then echo $LN; exit 1; fi
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which_is RM 'rm';
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if [ $? -ne 0 ]; then echo $RM; exit 1; fi
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which_is SSH 'ssh';
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if [ $? -ne 0 ]; then echo $SSH; exit 1; fi
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which_is PHP 'php';
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if [ $? -ne 0 ]; then echo $PHP; exit 1; fi
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which_is TOUCH 'touch'
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if [ $? -ne 0 ]; then echo $TOUCH; exit 1; fi
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which_is CHOWN 'chown'
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if [ $? -ne 0 ]; then echo $CHOWN; exit 1; fi
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# Add slash to paths if missing
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if [ "${BACKUP_TARGET:${#BACKUP_TARGET}-1:1}" != "/" ]; then
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BACKUP_TARGET=$BACKUP_TARGET/
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fi
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if [ "${CONFIG_NC_DATA:${#CONFIG_NC_DATA}-1:1}" != "/" ]; then
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CONFIG_NC_DATA=$CONFIG_NC_DATA/
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fi
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if [ "${CONFIG_NC_BASE:${#CONFIG_NC_BASE}-1:1}" != "/" ]; then
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CONFIG_NC_BASE=$CONFIG_NC_BASE/
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fi
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if [ "${CONFIG_NC_LOGPATH:${#CONFIG_NC_LOGPATH}-1:1}" != "/" ]; then
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CONFIG_NC_LOGPATH=$CONFIG_NC_LOGPATH/
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fi
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## Logfile in nextcloud to have a visible result.
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RUNDATE=$($DATE +%Y_%m_%d)
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LOGFILE="$CONFIG_NC_DATA$CONFIG_NC_LOGPATH${RUNDATE}_cloudbackup.log";
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$TOUCH ${LOGFILE};
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if [ $? -ne 0 ]; then
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echo "Could not create log file! exiting.";
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exit 1;
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fi
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logger $LLINFO "Chown logfile $LOGFILE.";
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$CHOWN :www-data ${LOGFILE};
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if [ $? -ne 0 ]; then
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logger $LLWARNING "Cloud not set group ownership of log file."; # The logfile may not appaer in the clouds dedicated folder.
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exit 1;
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fi
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logger $LLINFO "Making log file $CONFIG_NC_LOGPATH visible to cloud.";
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update_filescache $CONFIG_NC_LOGPATH; # make logfile visible in cloud
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if [ $? -ne 0 ]; then
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logger $LLWARNING "Could not update files cache of nextcloud!";
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fi
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TODAY=$($DATE +%y%m%d_%H%M)
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logger $LLMDTRY "Starting backup for ${TODAY}.";
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## Let nextcloud enter maintenance mode
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logger $LLDEBUG "$SUDO -u www-data $PHP ${CONFIG_NC_BASE}occ maintenance:mode --on;";
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logger $LLINFO "Enabling maintenance mode of nextcloud.";
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$SUDO -u www-data $PHP ${CONFIG_NC_BASE}occ maintenance:mode --on;
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if [[ "$?" != "0" ]]; then logger $LLERROR "Setting nextcloud maintenance mode failed!"; clean_up 1; fi
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## Dump mariadb
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logger $LLDEBUG "$MYSQLDUMP --single-transaction -h ${CONFIG_NC_DB_SERVER} -u ${CONFIG_NC_DB_USER} -p${CONFIG_NC_DB_PASSWD} ${CONFIG_NC_DB_NAME} > $CONFIG_NC_DATA/${TODAY}_nextcloud.sqlbkp;";
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logger $LLINFO "Dumping nextcloud database.";
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$MYSQLDUMP --single-transaction -h ${CONFIG_NC_DB_SERVER} -u ${CONFIG_NC_DB_USER} ${CONFIG_NC_DB_NAME} > $CONFIG_NC_DATA/${TODAY}_nextcloud.sqlbkp;
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if [[ "$?" != "0" ]]; then logger $LLERROR "Dump of the nextcloud database failed!"; clean_up 1; fi
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## Connect to Borg Repo and backup the:
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## - config folder,
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## - data folder,
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## - theme folder,
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## - dumped database
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# Simple backup with rsync
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# local-mode, tossh-mode, fromssh-mode
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### do not edit ###
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RSYNCCONF=(--delete)
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LAST="last"; INC="--link-dest=$BACKUP_TARGET$LAST"
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if [ "$SSHUSER" ] && [ "$SSHPORT" ]; then
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S="$SSH -p $SSHPORT -l $SSHUSER";
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else
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logger $LLERROR "Invalid ssh command, port or user: »$SSH« »$SSHPORT« «$SSHUSER«";
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clean_up 1;
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fi
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for SOURCE in "${BACKUP_SOURCES[@]}"; do
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logger $LLDEBUG "$RSYNC -e $S --exclude-from=$CONFIG_EXCLUDE -avR $SOURCE ${RSYNCCONF[@]} $TOSSH:$BACKUP_TARGET$TODAY $INC";
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logger $LLINFO "Rsyncing $SOURCE.";
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$RSYNC -e "$S" --exclude-from=$CONFIG_EXCLUDE -avR "$SOURCE" "${RSYNCCONF[@]}" "$TOSSH:$BACKUP_TARGET$TODAY" $INC;
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if [ $? -ne 0 ]; then logger $LLERROR "Rsync of $SOURCE failed!"; fi
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done
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if [ "$S" ] && [ "$TOSSH" ] && [ -z "$FROMSSH" ]; then
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logger $LLDEBUG "$S $TOSSH $LN -nsf $TARGET$TODAY $TARGET$LAST";
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logger $LLINFO "Setting Link to last to »$TARGET$TODAY«";
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$S $TOSSH "$LN -nsf $TARGET$TODAY $TARGET$LAST";
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if [ $? -ne 0 ]; then logger $LLERROR "Resetting link to last backup of todays failed!"; clean_up 1; fi
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fi
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logger $LLMDTRY "Backup of nextcloud done, cleaning up.";
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#if [[ "$?" != "0" ]]; then $(logger 1 "Borgbackup of the nextcloud data folder failed!"); exit 1; fi
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#if [[ "$?" != "0" ]]; then $(logger 1 "Borgbackup of the nextcloud database failed!"); exit 1; fi
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## End maintenance mode of nextcloud end exit 0
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clean_up 0;
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## EOF
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