ApsaraDB for MongoDB allows you to change configurations to meet your needs in most scenarios. It also provides solutions to the configuration items that you cannot change.
For more information about instance specifications, see Instance types.
Standalone instances
Item | Configuration change supported | Description |
---|---|---|
Specifications | Yes | For more information, see Change the configuration of a standalone or replica set instance. |
Storage space | Yes | For more information, see Change the configuration of a standalone or replica set instance.
If the billing method is subscription, you cannot downgrade the storage space. You must perform the following operations:
|
Number of nodes | No |
You cannot change the number of nodes, architecture, and storage engine for a standalone instance. You must perform the following operations:
|
Instance architecture | ||
Storage engines |
Replica set instances
Item | Configuration change supported | Description |
---|---|---|
Number of nodes | Yes | For more information, see Change the number of nodes for a replica set instance. |
Specifications | Yes | For more information, see Change the configuration of a standalone or replica set instance. |
Storage space | Yes | For more information, see Change the configuration of a standalone or replica set instance.
If the billing method is subscription, you cannot downgrade the storage space. You must perform the following operations:
|
Instance architecture | No |
You cannot change the architecture and storage engine of a replica set instance. You must perform the following operations:
|
Storage engines |
Sharded cluster instances
You can change the specifications and storage space of a sharded cluster instance.Component | Item | Description |
---|---|---|
Mongos node | Specifications | For more information, see Change the configuration of a sharded cluster instance. |
Shard node | Specifications | For more information, see Change the configuration of a sharded cluster instance.
If the billing method is subscription, you cannot downgrade the storage space. You must perform the following operations:
|
Storage space | ||
Configserver node | Specifications and storage space | A Configserver node uses a fixed three-node replica set architecture. By default, 1 core, 2 GB memory, and 20 GB storage space are selected. You cannot change these items. |