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DocumentationTencentDB for MongoDBOperation GuideNode ManagementAdding Mongos Node
Adding Mongos Node
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Last updated: 2025-02-06 17:57:57
Adding Mongos Node
Last updated: 2025-02-06 17:57:57
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Overview

You can add more mongos nodes to increase the maximum number of connections to the database instance.

Version requirements

Sharded clusters in version 4.0 and later currently support adding new Mongos nodes.

Instructions

After you add a mongos node, the system will automatically bind an IP address to it and enable the connection string for mongos access. Then, you can directly copy the connection string in the Network section on the Instance Details page.

Prerequisites

Instance type: Sharded cluster instance.
Instance status: Running.
The CPU performance and memory capacity of the mongos nodes are insufficient and need to be upgraded.

Directions

1. Log in to the TencentDB for MongoDB console.
2. In the MongoDB drop-down list on the left sidebar, select Shard Instance.
3. Above the Instance List on the right, select the region.
4. In the Instance List, find the target instance.
5. Click the Instance ID to enter the Instance Details page and click the Node Management tab.
6. On the Node Management tab, click the Mongos Node tab.
7. On the Mongos Node tab, click Add Mongos Node.
The instance nodes are in the same AZ:

The instance nodes are in different AZs:

Parameter
Description
Instance ID/Name
The unique ID and name of the instance.
AZ
The AZ where the instance resides. This parameter will be displayed if the instance nodes are in the same AZ.
Mongos Count
The current number of mongos nodes configured for the instance. This parameter will be displayed if the instance nodes are in the same AZ.
Mongos Specs
Specification of mongos nodes, including the number of CPU cores, memory, and maximum number of connections.
Add Mongos Node
Select the number of mongos nodes to be added. An instance can have up to 48 mongos nodes.
Total Fees
Fees after specification adjustment.
In pay-as-you-go billing mode, fees are charged hourly by the new specification in three billing tiers.
Compare
You can compare the specification, number of nodes in the AZ, and maximum numbers of connections before and after mongos nodes are added to assess whether the new specification meets your needs.
8. After confirming that everything is correct, click OK.
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