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This article introduces the relevant knowledge of "what are the steps of Mongodb data migration". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Requirements: need to migrate mongodb data from one linux to another linux

Example: a migrates to B

Scheme:

You can complete the task with two commands:

Export of data: mongoexport

Data import: mongoimport

Specific steps:

Export:

1. Find the directory where the mongoexport of A's mongodb is located.

For example: cd / usr/local/mongodb/bin

two。 Export the data, execute the command:. / mongoexport-d DataBaseName-c CollectionName-o XXX.dat

Where DataBaseName is the database name, CollectionName is the collection name, and XXX.dat is the exported name

The exported XXX.dat will be in the same directory as mongoexport.

For example:. / mongoexport-d Student-c StudentInfo-o StudentInfo.dat

Export the collection StudentInfo under the database Student to the same directory as mongoexport and name it StudentInfo.dat

3. Follow the steps above to export all collections, and the export is complete.

Import:

4. To move the exported collection data to the same directory as mongoimport on server B, you can use the command:

Sudo mv / tmp/XXX.dat / db/mongo/bin (move XXX.dat to / db/mongo/bin directory)

5. Find the directory where the mongoimport of B is located: cd / db/mongo/bin

6. Import the data and execute the command:

. / mongoimport-h 127.0.0.1:port-u xxx- p xxx-d DataBaseName-c CollectionName XXX.dat

Where DataBaseName is the database name, CollectionName is the collection name, and XXX.dat is the imported collection

For example:

. / mongoimport-h 127.0.0.1 zhangsan 27017-u zhangsan-p zhangsan-d Student-c StudentInfo StudentInfo.dat

-h 127.0.0.1 purl 27017: connect locally, port number is 27017

-u zhangsan: user name is zhangsan

-p zhangsan: password is zhangsan

-d Student-c StudentInfo StudentInfo.dat: import StudentInfo.dat into the database name Student and the collection name StudentInfo.

Migration complete.

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