sh.setBalancerState()

Description

sh.setBalancerState(state)

Enables or disables the balancer.

Starting in MongoDB 6.1, automatic chunk splitting is not performed. This is because of balancing policy improvements. Auto-splitting commands still exist, but do not perform an operation. For details, see Balancing Policy Changes.

In MongoDB versions earlier than 6.1, sh.setBalancerState() also enables auto-splitting if enabling the balancer and disables auto-splitting if disabling the balancer.

Use sh.getBalancerState() to determine if the balancer is currently enabled or disabled and sh.isBalancerRunning() to check its current state.

Important

mongosh Method

This page documents a mongosh method. This is not the documentation for database commands or language-specific drivers, such as Node.js.

For the database command, see the balancerStart and balancerStop commands.

For MongoDB API drivers, refer to the language-specific MongoDB driver documentation.

For the legacy mongo shell documentation, refer to the documentation for the corresponding MongoDB Server release:

• mongo shell v4.4

• mongo shell v4.2

Important

You can only run sh.setBalancerState() on a mongos instance. sh.setBalancerState() errors if run on mongod instance.

The sh.setBalancerState() method has the following parameter:

Parameter	Type	Description
state	boolean	Set this to true to enable the balancer and false to disable it.