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a83d9f admin 2025-09-03 13:58:39
added original dokuwiki file
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# Backups
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## Nextcloud
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Le backup export en utilisant la commande Export du Snap vers le
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répertoire par défaut et non changeable
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`/var/snap/nextcloud/common/backups`. Celui si est "symlinké" avec un
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répertoire sur les disques grandes capacités `/mnt/data/backup`.
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Le fichier obtenu est compressé et envoyé par rsync vers le NAS Synology
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FGM-ARBRE. Pour cela l'utilisateur rsync a été créé avec autorisation
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d'accès rsync, et répertoire de backup sur Arbre.
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Le répertoire de données Nextcloud `/data` est directement synchronisé
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avec son propre répertoire sur le backup d'Arbre.
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Les logs sont sauvegardés dans `/var/log/`.
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Les répertoires intermédiaires sont vidés avant traitement, les logs
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sont limités ansi que le nombre de fichier compressé de Nexcloud
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(database, paramétrages...)
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``` bash
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#!/bin/bash
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# Variables
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NEXTCLOUD_EXPORT_DIR="/var/snap/nextcloud/common/backups" # Default Nextcloud Snap export directory
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LOCAL_TEMP_DIR="/mnt/data/backup/temp" # Temporary local storage
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NAS_USER="rsync" # Synology NAS username
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NAS_HOST="192.168.1.41" # Synology NAS hostname or IP
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SRV_CERTIFICATE="~/.ssh/rsync_key"
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NAS_BACKUP_DIR="/volume1/NextcloudBackUp" # Destination path on Synology NAS
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DATE=$(date +'%Y-%m-%d_%H-%M-%S') # Timestamp for backup
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LOG_DIR="/var/log" # Log directory
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LOG_FILE="$LOG_DIR/nextcloud_backup_$DATE.log" # New log file with date-based name
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MAX_BACKUPS=5 # Maximum number of backups to keep on NAS
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CONFIG_DB_ARCHIVE="$LOCAL_TEMP_DIR/nextcloud_config_db_$DATE.tar.gz" # Compressed export for config and DB
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DATA_DIR="/mnt/ncdata/data" # Nextcloud data directory
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# Ensure local temporary storage directory exists
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mkdir -p "$LOCAL_TEMP_DIR"
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# Clean up old log files to keep only the latest 10
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echo "[$(date)] Cleaning up old log files..." | tee -a "$LOG_FILE"
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ls -t $LOG_DIR/nextcloud_backup*.log | tail -n +11 | xargs rm -f
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if [ $? -ne 0 ]; then
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echo "[$(date)] ERROR: Failed to clean up old log files." | tee -a "$LOG_FILE"
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exit 1
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fi
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echo "[$(date)] Old log files cleaned successfully." | tee -a "$LOG_FILE"
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# Clean up the Nextcloud export directory before starting
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echo "[$(date)] Cleaning up the Nextcloud export directory..." | tee -a "$LOG_FILE"
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sudo rm -rf -- "$NEXTCLOUD_EXPORT_DIR"/*
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if [ $? -ne 0 ]; then
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echo "[$(date)] ERROR: Failed to clean up the Nextcloud export directory." | tee -a "$LOG_FILE"
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exit 1
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fi
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sudo rm -rf -- "$LOCAL_TEMP_DIR"/*
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if [ $? -ne 0 ]; then
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echo "[$(date)] ERROR: Failed to clean up the Temporary Compress export directory." | tee -a "$LOG_FILE"
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exit 1
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fi
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echo "[$(date)] Nextcloud export directories cleaned successfully." | tee -a "$LOG_FILE"
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# Perform full export of config and database using Snap export
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echo "[$(date)] Starting full export of Nextcloud configuration and database..." | tee -a "$LOG_FILE"
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sudo nextcloud.export -abc > /dev/null 2>&1
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if [ $? -ne 0 ]; then
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echo "[$(date)] ERROR: Full export of Nextcloud configuration and database failed." | tee -a "$LOG_FILE"
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exit 1
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fi
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echo "[$(date)] Export completed successfully." | tee -a "$LOG_FILE"
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# Compress the exported config and database
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echo "[$(date)] Compressing exported configuration and database..." | tee -a "$LOG_FILE"
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tar -czf "$CONFIG_DB_ARCHIVE" -C "$NEXTCLOUD_EXPORT_DIR" .
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if [ $? -ne 0 ]; then
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echo "[$(date)] ERROR: Compression of configuration and database export failed." | tee -a "$LOG_FILE"
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exit 1
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fi
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# Transfer the compressed config and database archive to Synology NAS
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echo "[$(date)] Transferring compressed configuration and database to Synology NAS..." | tee -a "$LOG_FILE"
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rsync -a -e "ssh -i ~/.ssh/rsync_key" "$CONFIG_DB_ARCHIVE" "$NAS_USER@$NAS_HOST:$NAS_BACKUP_DIR/"
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if [ $? -ne 0 ]; then
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echo "[$(date)] ERROR: Transfer of configuration and database to Synology NAS failed." | tee -a "$LOG_FILE"
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exit 1
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fi
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# Sync the data directory directly to Synology NAS
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echo "[$(date)] Syncing data directory to Synology NAS..." | tee -a "$LOG_FILE"
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rsync -a -e "ssh -i ~/.ssh/rsync_key" --delete "$DATA_DIR/" "$NAS_USER@$NAS_HOST:$NAS_BACKUP_DIR/data/"
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if [ $? -ne 0 ]; then
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echo "[$(date)] ERROR: Sync of data directory to Synology NAS failed." | tee -a "$LOG_FILE"
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exit 1
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fi
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# Remove temporary local files to minimize space usage
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echo "[$(date)] Cleaning up local temporary files..." | tee -a "$LOG_FILE"
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rm -rf "$CONFIG_DB_ARCHIVE" "$LOCAL_TEMP_DIR"/*
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if [ $? -ne 0 ]; then
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echo "[$(date)] ERROR: Failed to clean up local temporary files." | tee -a "$LOG_FILE"
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exit 1
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fi
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# Rotate backups on the Synology NAS to keep only the latest $MAX_BACKUPS
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echo "[$(date)] Rotating backups on Synology NAS..." | tee -a "$LOG_FILE"
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ssh "$NAS_USER@$NAS_HOST" "ls -t $NAS_BACKUP_DIR | tail -n +$(($MAX_BACKUPS + 1)) | xargs -I {} rm -rf "$NAS_BACKUP_DIR/{}""
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if [ $? -ne 0 ]; then
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echo "[$(date)] ERROR: Backup rotation on Synology NAS failed." | tee -a "$LOG_FILE"
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exit 1
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fi
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echo "[$(date)] Backup process completed successfully." | tee -a "$LOG_FILE"
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exit 0
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```
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## Mailu
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``` bash
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#!/bin/bash
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# Configuration
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MAILU_DATA="/path/to/mailu_data" # Path to Mailu data
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BACKUP_DEST="user@synology:/path/to/synology/backups/mailu" # Destination on Synology NAS
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BACKUP_NAME="mailu_backup_$(date +'%Y%m%d%H%M%S').tar.gz" # Backup file name with timestamp
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KEEP_BACKUPS=5 # Number of backups to retain
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LOG_FILE="/var/log/mailu_backup.log" # Log file location
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# Create a backup archive
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echo "$(date) - Starting Mailu backup..." >> $LOG_FILE
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tar -czf "/tmp/$BACKUP_NAME" -C "$MAILU_DATA" . >> $LOG_FILE 2>&1
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if [ $? -ne 0 ]; then
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echo "$(date) - Backup creation failed!" >> $LOG_FILE
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exit 1
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fi
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# Sync the backup to the NAS
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rsync -avz --remove-source-files "/tmp/$BACKUP_NAME" "$BACKUP_DEST" >> $LOG_FILE 2>&1
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if [ $? -ne 0 ]; then
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echo "$(date) - Rsync to NAS failed!" >> $LOG_FILE
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exit 1
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fi
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# Clean up older backups on the NAS
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echo "$(date) - Cleaning up old backups..." >> $LOG_FILE
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ssh user@synology "cd /path/to/synology/backups/mailu && ls -tp | grep -v '/$' | tail -n +$((KEEP_BACKUPS + 1)) | xargs -d 'n' -r rm --" >> $LOG_FILE 2>&1
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if [ $? -eq 0 ]; then
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echo "$(date) - Old backups cleaned up successfully." >> $LOG_FILE
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else
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echo "$(date) - Failed to clean up old backups." >> $LOG_FILE
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fi
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echo "$(date) - Backup completed successfully." >> $LOG_FILE
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```