notebookvb

MongTower/mongodbbackup_with_gzip.sh

@@ -12,6 +12,7 @@ UNRAID_NAME="tower"
 BASE_PATH="/mnt/user/Backup/Critical/MongoDBBackup"
 
 KEEP_DAYS=3
+KEEP_COUNT=3   # počet posledních záloh k udržení (mimo time-based)
 
 # Databases to back up (+ admin DB pro credentials a roles)
 WHAT_TO_BACKUP=("admin" "edc")
@@ -30,31 +31,24 @@ for DB_NAME in "${WHAT_TO_BACKUP[@]}"; do
     FINAL_PATH="$BASE_PATH/$UNRAID_NAME/$DB_NAME/$DATE"
     mkdir -p "$FINAL_PATH"
 
-    DUMP_DIR="$FINAL_PATH/$DB_NAME"
     DUMP_FILE="$FINAL_PATH/$DB_NAME.archive.gz"
     ERR_FILE="$FINAL_PATH/$DB_NAME.err"
 
     # ======================================================
-    # DUMP + GZIP
+    # DUMP + GZIP (streamuje přes stdout, nepotřebuje volume mount)
     # Zachovává: indexy, metadata, validators, all collections
     # ======================================================
     docker exec "$CONTAINER_NAME" mongodump \
         --host="$MONGO_HOST" \
         --port="$MONGO_PORT" \
         --db="$DB_NAME" \
-        --out="$DUMP_DIR" \
+        --archive \
+        --gzip \
         --numParallelCollections=4 \
-        2> "$ERR_FILE"
+        > "$DUMP_FILE" 2> "$ERR_FILE"
 
     EXIT_CODE=$?
 
-    # Compress the dump directory
-    if [ $EXIT_CODE -eq 0 ]; then
-        (cd "$FINAL_PATH" && tar -czf "$DB_NAME.archive.gz" "$DB_NAME" 2>> "$ERR_FILE")
-        EXIT_CODE=$?
-        rm -rf "$DUMP_DIR"
-    fi
-
     # ======================================================
     # VALIDATION
     # ======================================================
@@ -73,12 +67,19 @@ for DB_NAME in "${WHAT_TO_BACKUP[@]}"; do
 
     # ======================================================
     # CLEANUP OLD BACKUPS
+    # 1. Smaž zálohy starší než KEEP_DAYS dnů
+    # 2. Z toho co zbyde, ponech jen posledních KEEP_COUNT
     # ======================================================
     echo "Cleaning up old backups for $DB_NAME..."
     find "$BASE_PATH/$UNRAID_NAME/$DB_NAME" \
         -mindepth 1 -maxdepth 1 -type d -mtime +$KEEP_DAYS \
         -exec rm -rf {} \;
 
+    # Nech jen posledních KEEP_COUNT záloh
+    ls -td "$BASE_PATH/$UNRAID_NAME/$DB_NAME"/*/ 2>/dev/null \
+        | tail -n +$((KEEP_COUNT + 1)) \
+        | xargs -r rm -rf
+
 done
 
 echo "------------------------------------------"