Question 117322 in Mongodb Question posted in
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Replicated single Database in mongoDB

I want to replicated a single database of a mongoDB-Server. There are four databases on the server:

Server A to replicated Server B
database 1a database 1b
database 2a database 2b
database 3a ————–> database 3b
database 4a database 4b

Only the database 3a should be replicated to Server B.

How can I do it? Is it possible with the normal replication configuration (https://www.mongodb.com/docs/manual/replication/) and if the answer is yes, how?

I hope you can help. Thank you in forward.

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2

Answers


  1. 0

    Short answer: this is not possible with Replication.

    Long answer: Perhaps is would be possible with some crazy setup of a Sharded Cluster, because sharding is enabled/disabled per database.

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  2. 0

    Yes, it’s possible… Change streaming is the solution. So, you copy changes of one database (or collection) to other server.

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