mongodump 命令

常用示例

说明

mongodump creates binary exports of MongoDB databases. It reads data directly from MongoDB and writes BSON files, preserving document structure and types. Output format is a directory structure with one folder per database containing BSON and metadata JSON files for each collection. The archive format combines everything into a single file. The --oplog option captures operations during the dump, enabling point-in-time restore. This is essential for consistent backups of active databases. Query filtering exports only matching documents. This enables partial backups, test data extraction, or archiving specific records. Compression (--gzip) significantly reduces backup size. Combined with archive format, it produces a single compressed file suitable for storage or transfer. Parallelism options speed up large backups. Multiple collections can dump simultaneously, and documents within collections can be processed in parallel.

参数

--uri _URI_

MongoDB connection URI.

--host _HOST_

Server hostname.

--port _PORT_

Server port.

--db, -d _DATABASE_

Database to dump.

--collection, -c _COLL_

Collection to dump.

--out, -o _DIR_

Output directory.

--archive=_FILE_

Output as archive file.

--gzip

Compress output.

--query, -q _JSON_

Filter documents.

--queryFile _FILE_

Query filter from file.

--username, -u _USER_

Authentication username.

--password, -p _PASS_

Authentication password.

--authenticationDatabase _DB_

Authentication database.

--oplog

Include oplog for point-in-time backup.

--dumpDbUsersAndRoles

Include users and roles.

--numParallelCollections _N_

Parallel collection dumps.

-j _N_

Parallel document dumps.