MongoDB Get Shard Version

MongoDB Get Shard Version

In MongoDB, the getShardVersion operation is used to retrieve the shard version information for a collection. This method is essential for understanding the current version of shard metadata for a collection within MongoDB.

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Syntax

db.collection.getShardVersion()

The getShardVersion method does not take any parameters and returns the shard version information for the specified collection.

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Example MongoDB Get Shard Version

Let's look at an example of how to use the getShardVersion method in the programGuru collection in MongoDB:

1. Retrieve Shard Version Information

db.programGuru.getShardVersion()

This command retrieves the shard version information for the programGuru collection.

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Full Example

Let's go through a complete example that includes switching to a database, creating a collection, enabling sharding, and retrieving the shard version information.

Step 1: Switch to a Database

This step involves switching to a database named myDatabase.

use myDatabase

In this example, we switch to the myDatabase database.

Step 2: Create a Collection

This step involves creating a new collection named programGuru in the myDatabase database.

db.createCollection("programGuru")

Here, we create a collection named programGuru.

Step 3: Enable Sharding for the Database

This step involves enabling sharding for the myDatabase database.

sh.enableSharding("myDatabase")

We enable sharding for the myDatabase database.

Step 4: Shard the Collection

This step involves sharding the programGuru collection on the name field.

sh.shardCollection("myDatabase.programGuru", { name: 1 })

We shard the programGuru collection on the name field.

Step 5: Retrieve Shard Version Information

This step involves using the getShardVersion method to retrieve the shard version information for the programGuru collection.

db.programGuru.getShardVersion()

We retrieve the shard version information for the programGuru collection.

Conclusion

The MongoDB getShardVersion operation is crucial for understanding the current version of shard metadata for a collection. Understanding how to use this method allows you to efficiently manage and monitor the sharding configuration of your MongoDB collections.