Description
This API supports sharded cluster instances only.
| Name | Type | Required or not | Description |
|---|
| Action | String | Yes | Required parameter; value: ModifyNodeSpec. |
| DBInstanceId | String | Yes | Primary instance ID |
| NodeId String | String | Yes | Sub-instance ID |
| NodeClass | String | Yes | Node specification |
| NodeStorage | String | No | Node disk space. Set this parameter for shard nodes. |
| ClientToken | String | No | Token. It is used to ensure the idempotence. |
Response parameters
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