134 lines
3.2 KiB
Bash
134 lines
3.2 KiB
Bash
#!/bin/bash
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# Docker Volume Backup Script
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# Wird remote auf dem Server ausgeführt
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# Sichert alle Docker Volumes automatisch
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set -e
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# Parameter
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BACKUP_DATE="${BACKUP_DATE:-$(date +%Y%m%d_%H%M%S)}"
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BACKUP_BASE_DIR="$HOME/backups"
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BACKUP_DIR="$BACKUP_BASE_DIR/$BACKUP_DATE"
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EXCLUDE_VOLUMES="${EXCLUDE_VOLUMES:-}" # Komma-separierte Liste von Volumes die übersprungen werden sollen
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echo "========================================"
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echo "Docker Volume Backup"
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echo "========================================"
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echo "Backup directory: $BACKUP_DIR"
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echo "Date: $(date)"
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echo "Server: ${SERVER_NAME:-unknown}"
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echo ""
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# Backup-Verzeichnis erstellen
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echo "Creating backup directory: $BACKUP_DIR"
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mkdir -p "$BACKUP_DIR"
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echo "Discovering Docker volumes..."
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VOLUMES=$(docker volume ls --format '{{.Name}}')
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VOLUME_COUNT=$(echo "$VOLUMES" | wc -l)
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if [ -z "$VOLUMES" ]; then
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echo "⚠ No Docker volumes found!"
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exit 0
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fi
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echo "Found $VOLUME_COUNT volumes to backup"
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if [ -n "$EXCLUDE_VOLUMES" ]; then
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echo "Excluding: $EXCLUDE_VOLUMES"
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fi
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echo ""
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# Funktion zum Prüfen ob Volume ausgeschlossen werden soll
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is_excluded() {
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local VOLUME_NAME=$1
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if [ -z "$EXCLUDE_VOLUMES" ]; then
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return 1 # Nicht ausgeschlossen
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fi
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IFS=',' read -ra EXCLUDED <<< "$EXCLUDE_VOLUMES"
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for excluded in "${EXCLUDED[@]}"; do
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if [[ "$VOLUME_NAME" == "$excluded" ]]; then
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return 0 # Ausgeschlossen
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fi
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done
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return 1 # Nicht ausgeschlossen
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}
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# Funktion zum Backup eines Volumes
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backup_volume() {
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local VOLUME_NAME=$1
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local SAFE_NAME=$(echo "$VOLUME_NAME" | tr '/' '_' | tr ':' '_')
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# Prüfen ob ausgeschlossen
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if is_excluded "$VOLUME_NAME"; then
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echo "⊘ Skipping $VOLUME_NAME (excluded)"
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return 0
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fi
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echo "Backing up: $VOLUME_NAME..."
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if docker run --rm \
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-v "$VOLUME_NAME":/source:ro \
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-v "$BACKUP_DIR":/backup \
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alpine tar czf "/backup/${SAFE_NAME}.tar.gz" -C /source . 2>/dev/null; then
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SIZE=$(du -h "$BACKUP_DIR/${SAFE_NAME}.tar.gz" | cut -f1)
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echo "✓ $VOLUME_NAME backed up ($SIZE)"
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else
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echo "✗ Failed to backup $VOLUME_NAME"
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return 1
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fi
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}
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# Alle Volumes sichern
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SUCCESS_COUNT=0
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FAILED_COUNT=0
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while IFS= read -r volume; do
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if backup_volume "$volume"; then
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((SUCCESS_COUNT++)) || true
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else
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((FAILED_COUNT++)) || true
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fi
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echo ""
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done <<< "$VOLUMES"
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# Create manifest
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echo "========================================"
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echo "Creating backup manifest..."
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cd "$BACKUP_DIR"
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cat > manifest.txt << EOF
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Backup created: $(date)
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Hostname: $(hostname)
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Server: ${SERVER_NAME:-unknown}
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Total volumes: $VOLUME_COUNT
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Successful: $SUCCESS_COUNT
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Failed: $FAILED_COUNT
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Files:
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$(ls -lh *.tar.gz 2>/dev/null || echo "No backup files created")
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Checksums (SHA256):
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$(sha256sum *.tar.gz 2>/dev/null || echo "No files to checksum")
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EOF
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echo "Backup manifest:"
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cat manifest.txt
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echo ""
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echo "Total backup size: $(du -sh $BACKUP_DIR | cut -f1)"
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echo "========================================"
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echo "Summary:"
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echo " Total volumes: $VOLUME_COUNT"
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echo " Successful: $SUCCESS_COUNT"
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echo " Failed: $FAILED_COUNT"
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echo "========================================"
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if [ $FAILED_COUNT -gt 0 ]; then
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echo "⚠ Backup completed with errors!"
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exit 1
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else
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echo "✓ Backup completed successfully!"
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exit 0
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fi
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