How to use mongodump for 1 collection
Solution 1
I think it's just:
mongodump --db=<old_db_name> --collection=<collection_name> --out=data/
mongorestore --db=<new_db_name> --collection=<collection_name> data/<db_name>/<collection_name>.bson
Btw, the other way to move the collection from one database to another is to use renameCollection
:
db.runCommand({renameCollection:"<old_db_name>.<collection_name>",to:"<new_db_name>.<collection_name>"})
Here's some related SO threads:
- How to copy a collection from one database to another in MongoDB
- How to use the dumped data by mongodump?
Hope that helps.
Solution 2
Taking database (document) dump (backup)
mongodump --host <hostname-of-mongoserver> --db <db-name> --username <dbuser-name> --password <password> --gzip --out </backup/location/>
Taking collection dump (backup)
mongodump --host <hostname-of-mongoserver> --db <db-name> --collection <collection-name> --username <dbuser-name> --password <password> --gzip --out </backup/location/>
Solution 3
Very basic commands for dump mongodb.
-
Dump all collection
mongodump
-
Dump specific database only
mongodump --db=DB_NAME
-
Dump database with username & password
mongodump -u=USERNAME -p=PASSWORD --db=DB_NAME
-
Dump from another host
mongodump --host HOST_NAME/HOST_IP --port HOST_PORT --out {YOUR_DIRECTOTY_PATH} --db=DB_NAME
Only able to dump from another host when they allow it.
Solution 4
If it's a replica set and you want to use the --uri
you should use it like this cause documentation states that you can't specify some options when using --uri
mongodump --uri "mongodb://user:[email protected]:27017,mongo-en-2.example.io:27017,mongo-en-3.example.io:27017/$Databasename?replicaSet=$replicasetname&authSource=admin" --collection $collectionname
Then restore it the usual way.
Solution 5
Here is an example of how you can export a single collection with mongodump.exe
on Windows 10:
"D:\Program Files\MongoDB\Server\4.0\bin\mongodump.exe" -h localhost --port 27017 -d meteor --collection users -o meteor_users
The exported collection is users
, the database is meteor
, the host localhost
, the port is 27017
.
The output will be stored in directory meteor_users
.
Restoring should use a command like this one:
"D:\Program Files\MongoDB\Server\4.0\bin\mongorestore.exe" -d meteor -c users users.bson
user2325703
Updated on March 09, 2021Comments
-
user2325703 over 3 years
How can I use
mongodump
to move a single collection from one database to another?How should I use the command and its options?