rdiff-backup-dockerized/start.sh

#!/bin/bash

# set -e

# source job.conf
BACKUP_DIR=/backups
CONFIG_DIR=/config
SSH_CF_DIR=/root/.ssh

read_config(){ 
	#Konfiguration resetten
	source "/reset-conf.sh"
	
	if [ ! -f "$CONFIG_DIR/$1" ]; then
		echo config nicht vorhanden!z
		exit 1
	fi 
	
}

gen_config(){
 	[ ! -f "$SSH_CF_DIR/id_rsa" ] && ssh-keygen -t rsa -b 4096 -f "$SSH_CF_DIR/id_rsa" -q -C "rdiff-backup-dockerized @ ${SSH_KEY_MARKER}" && chmod go-rwx $SSH_CF_DIR/id_rsa
	
	if [ ! -f "$SSH_CF_DIR/config" ]; then
		echo 'Host *' > "$SSH_CF_DIR/config"
		echo '   StrictHostKeyChecking no' >> "$SSH_CF_DIR/config"
		# echo '   UserKnownHostsFile=/dev/null' >> "$SSH_CF_DIR/config"
		
		chmod go-rwx $SSH_CF_DIR/config
	fi
	
	[ ! -f "$CONFIG_DIR/example_conf.sh" ] && cp /example_conf.sh "$CONFIG_DIR/example_conf.sh"
}

backup(){
	read_config "$1"
	
	echo Start backup $1 
	echo ==================================================
	
	# neue Konfiguration lesen
	source "$CONFIG_DIR/$1"
	
	# SCHRITT 1:
	# sichern der MySQL-Datenbanken auf dem remote host
	# es muss auf dem remote host genug Platz auf der Festplatte geben damit Dump erfolgen kann!
	
	if [  ${#MYSQL_DB[@]} -gt 0 ]
	then
		[ "$MYSQL_DUMP_DIR" != "" ] && [ "$MYSQL_DUMP_DIR" != "/" ] && ssh ${REMOTE_USER}@${REMOTE_HOST} "[ ! -d \"$MYSQL_DUMP_DIR\" ] && mkdir -p \"$MYSQL_DUMP_DIR\""
		
		for db in "${MYSQL_DB[@]}"
		do
			echo dumb database: "$db"
			ssh ${REMOTE_USER}@${REMOTE_HOST} "mysqldump -u \"$MYSQL_USER\" \"-p$MYSQL_PASS\" --events --routines --triggers --single-transaction --add-drop-database -B \"$db\" > \"$MYSQL_DUMP_DIR/$db.sql\""
		done
	
		# Ordner mit SQL-Dateien in die Sicherung aufnehmen
		FOLDERS+=("$MYSQL_DUMP_DIR")
	fi

	# SCHRITT 2:
	# die Sicherung der Ordner (inklusive der SQL-Dump)
	for dir in "${FOLDERS[@]}"
	do
		# prüfen ob das backup-ordner existiert ...
		if [ ! -d "$BACKUP_DIR/${REMOTE_HOST}${dir}" ];
		then
			# ... und gegebenfals anlegen
			mkdir -p "$BACKUP_DIR/${REMOTE_HOST}${dir}"
		fi
		
		# die eigentliche Sicherung ...	
		echo backup file[s]: "$dir"
		rdiff-backup $RDIFF_BACKUP_OPTS "${REMOTE_USER}@${REMOTE_HOST}::${dir}" "$BACKUP_DIR/${REMOTE_HOST}${dir}"
		
		# alle Sicherungen die älter als $DELETE_OLD_FILES löschen
		rdiff-backup --remove-older-than $DELETE_OLD_FILES --force "$BACKUP_DIR/${REMOTE_HOST}${dir}"
		
		# Liste der Sicherungen anzeigen
		if [ "$2" == "--list" ]; then
			rdiff-backup -l "$BACKUP_DIR/${REMOTE_HOST}${dir}"
		fi
		
		echo
	done
	
	# SCHRITT 3: 
	# die SQL-Dateien vom remote host wieder löschen 
	if [  ${#MYSQL_DB[@]} -gt 0 ]
	then
		[ "$MYSQL_DUMP_DIR" != "" ] && [ "$MYSQL_DUMP_DIR" != "/" ] && ssh ${REMOTE_USER}@${REMOTE_HOST} "rm -rf \"$MYSQL_DUMP_DIR/\"*.sql"
	fi
	echo Done backup $1 
	echo
}

restore(){
	read_config "$1"
	
	echo Start restore $1 
	echo ==================================================
	
	# neue Konfiguration lesen
	source "$CONFIG_DIR/$1"
	# SCHRITT 1:
	# Alle Dateien und Ordner aus dem letzten Backup wiederherstellen
	
	if [  ${#MYSQL_DB[@]} -gt 0 ]
	then
		FOLDERS+=("$MYSQL_DUMP_DIR")
	fi
	
	for dir in "${FOLDERS[@]}"
	do
		# die eigentliche Wiederherstellung ...	
		echo restore file[s]: "$dir" "$2"
		
		if [ "$2" != "" ]; then
			rdiff-backup --force -r "$2" "$BACKUP_DIR/${REMOTE_HOST}${dir}" "${REMOTE_USER}@${REMOTE_HOST}::${dir}"
		else
			rdiff-backup --force -r now "$BACKUP_DIR/${REMOTE_HOST}${dir}" "${REMOTE_USER}@${REMOTE_HOST}::${dir}"
		fi
	done
	# SCHRITT 2:
	# Datenbanken wiederherstellen 
		
	for db in "${MYSQL_DB[@]}"
	do
		echo restore database: "$db"
		ssh ${REMOTE_USER}@${REMOTE_HOST} "mysql -u \"$MYSQL_USER\" \"-p$MYSQL_PASS\" < \"$MYSQL_DUMP_DIR/$db.sql\""
		[ "$MYSQL_DUMP_DIR" != "" ] && [ "$MYSQL_DUMP_DIR" != "/" ] && ssh ${REMOTE_USER}@${REMOTE_HOST} "rm -rf \"$MYSQL_DUMP_DIR/$db.sql\""
	done
	
	
	echo Done restore $1 
	echo
}


list(){
	read_config "$1"
	
	echo Show backups of $1 
	echo ==================================================
	
	# neue Konfiguration lesen
	source "$CONFIG_DIR/$1"
	
	if [  ${#MYSQL_DB[@]} -gt 0 ]
	then
		FOLDERS+=("$MYSQL_DUMP_DIR")
	fi
	
	for dir in "${FOLDERS[@]}"
	do
		echo show backups for file[s]: "$dir"
		
		rdiff-backup -l "$BACKUP_DIR/${REMOTE_HOST}${dir}"
		echo
	done
	
	echo Done show $1 
	echo
}

if [ "$1" == "--gen-config" ]; then
	gen_config
	
elif [ "$1" == "--backup" ]; then
	shift
	backup "$@"
	
elif [ "$1" == "--restore" ]; then
	shift
	restore "$@"
	
elif [ "$1" == "--list" ]; then
	shift
	list "$@"
	
elif [ "$1" == "--bash" ]; then
	shift
	/bin/bash "$@"
	
else
	echo "usage ?"
fi