Backup and Restore MongoDB Databases

Thu, Sep 5, 2019

MongoDB comes with two commands that allow us to quickly backupand restore to our running MongoDB instances. In order to take backups, we can use the mongodump command which creates BSON dump files. And to restore those dump, we can use the mongorestore command.

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Taking Backups

- all databases

$ mongodump

- single database

$ mongodump --db <DATABASE>

- single collection

$ mongodump --db <DATABASE> --collection <COLLECTION>

- from remote host

$ mongodump --host <HOST>:<PORT> --username <USERNAME> --password <USERNAME> --db <DATABASE>

- using uri

$ mongodump --uri="<CONNECTION STRING>"

*if your local mongodump is having lower version than remote mongodb and the above command does not work, try adding the --forceTableScan option.

we can also use -d instead of --db, and -c instead of --collection

src : https://docs.mongodb.com/manual/reference/program/mongodump

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Restore from dump

- all databases

$ mongorestore <DUMP_FOLDER>

it will create all the database and collection in local mongodb from the dump folder

- single database

$ mongorestore -d <NEW_DATABASE> <DUMP_DIRECTORY>

- single collection

$ mongorestore -d <NEW_DATABASE> -c <NEW_COLLECTION> <COLLECTION.bson>

To remote host,

$ mongorestore --uri="<DB_URI>" -d <NEW_DATABASE> -c <NEW_COLLECTION> <COLLECTION.bson>

Note :

There is a new option called --nsInclude from mongo 3.4. Using this option, we can use namespaces instead of older options where db_name and collection_name are given.

Example :

• Old Way : mongorestore --db db_name --collection collection_name
• Using --nsInclude : mongorestore --nsInclude db_name.collection_name

src : https://docs.mongodb.com/manual/reference/program/mongorestore