ApsaraDB for MongoDB:Change Mongos configurations

Billing rules

For more information, see Configuration change fees.

Notes

• This process may cause 1-2 brief disconnections, each lasting about 30 seconds. You can schedule the change to avoid interrupting your business.

• The time required to complete the configuration change depends on factors such as network conditions, the task queue, and the amount of data. Change the configurations during off-peak hours and ensure that your application has an automatic reconnection mechanism.

• If the minor version of your database is expired or is not on the maintenance list, the system automatically upgrades the minor version to the latest version during the configuration change. This ensures better performance and stability.

Procedure

1. Go to the ApsaraDB for MongoDB sharded cluster instances page. At the top of the page, select a resource group and a region. Then, click the ID of the target instance.

2. In the Mongos List section, change the configuration of one or more Mongos nodes.

   • Change the configuration of one Mongos node.

     Find the target Mongos node. In the Actions column, click the icon. For a pay-as-you-go instance, select Change Configurations. For a subscription instance, select Upgrade Configuration or Downgrade Configuration.

   • Change the configurations of multiple Mongos nodes

     1. In the Mongos List, select the target Mongos nodes.

     2. In the upper-left corner of the Mongos List, select Batch Change for pay-as-you-go instances. For subscription instances, select Batch Upgrade or Batch Downgrade.

3. Set the following parameters.

   Parameter	Description
   Specification Category	Select the specification category for the Mongos nodes. Note This parameter is required only for ApsaraDB for MongoDB sharded cluster instances that use cloud disks. If a category is not available for selection, it is not supported in the current zone. For more information about the categories and specifications of ApsaraDB for MongoDB sharded cluster instances, see Sharded cluster instance specifications.
   Instance Specifications	Select the specifications for the Mongos nodes.
   Switchover Time	Select when the configuration change takes effect. Switch Immediately after Migration: The system applies the configuration change immediately after the task is complete. Switch within Maintenance Window: The system applies the configuration change within the specified maintenance window. You can use the current maintenance window or set a new one as needed. Click Edit next to Switch within Maintenance Window to set the switch time. In the Specification Information section, click Edit next to Maintenance Window to set the switch time. For more information, see Set a maintenance window.

4. Complete the purchase based on the billing method.

   • Pay-as-you-go: Click Pay Now. The system automatically deducts the fee within the next hour.

   • Subscription: Click Pay Now and complete the payment process on the Payment page.

   During the configuration change, the instance status is Changing Configuration. When the instance status changes to Running, the configuration change is complete.

Related API operations