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Sharding Commands


For details on specific commands, including syntax and examples, click on the specific command to go to its reference page.

Adds a shard to a sharded cluster.
Associates a shard with a zone. Supports configuring zones in sharded clusters.

Returns information on whether the chunks of a sharded collection are balanced.

New in version 4.4.

Starts a balancer thread.
Returns information on the balancer status.
Stops the balancer thread.
Internal command that validates index on shard key.
Clears the jumbo flag for a chunk.
Removes orphaned data with shard key values outside of the ranges of the chunks owned by a shard.
Enables sharding on a specific database.
Forces a mongod/mongos instance to update its cached routing metadata.
Internal command that reports on the state of a sharded cluster.
Internal command that returns the config server version.
Verifies that a process is a mongos.
Returns a list of configured shards.
Deprecated internal command. See splitVector.
Internal command that migrates chunks between shards.
Reassigns the primary shard when removing a shard from a sharded cluster.
Provides the ability to combine chunks on a single shard.

Refines a collection's shard key by adding a suffix to the existing key.

New in version 4.4.

Starts the process of removing a shard from a sharded cluster.
Removes the association between a shard and a zone. Supports configuring zones in sharded clusters.
Internal command to sets the config server version.
Enables the sharding functionality for a collection, allowing the collection to be sharded.
Reports whether the mongod is a member of a sharded cluster.
Creates a new chunk.
Internal command to split chunk. Instead use the methods sh.splitFind() and sh.splitAt().
Internal command that determines split points.
Deprecated. Internal command that affects connections between instances in a MongoDB deployment.
Adds or removes the association between a range of sharded data and a zone. Supports configuring zones in sharded clusters.
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