Configure Hot Replica Failover per Node in PolarDB - PolarDB - Alibaba Cloud - PolarDB

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

polardb:ModifyDBNodeHotReplicaMode

update

*DBCluster

acs:polardb:{#regionId}:{#accountId}:dbcluster/{#DbClusterId}

None

Request parameters

Parameter	Type	Required	Description	Example
DBClusterId	string	Yes	The ID of the cluster. Note You can call the DescribeDBClusters operation to query the details of the clusters that belong to your Alibaba Cloud account, such as cluster IDs.	pc-*****************
DBNodeId	string	Yes	The ID of the node in the cluster.	pi-*****************
HotReplicaMode	string	Yes	Specifies whether to enable the hot standby feature. Valid values: ON OFF	ON

Response elements

Element	Type	Description	Example
	object
RequestId	string	The ID of the request.	9F4DDFBF-205C-5A3E-8DC2-C6**********
DBClusterId	string	The ID of the cluster. Note You can call the DescribeDBClusters operation to query information about all clusters that are deployed in a specified region, such as the cluster ID.	pc-*****************
OrderId	string	The ID of the order.	2148126708*****

Examples

Success response

JSON format

{
  "RequestId": "9F4DDFBF-205C-5A3E-8DC2-C6**********",
  "DBClusterId": "pc-*****************",
  "OrderId": "2148126708*****"
}

Error codes

HTTP status code	Error code	Error message	Description
400	InvalidDBNodeId.Malformed	The specified parameter DBNodeId is not valid.	The specified DBNodeId parameter is invalid.
404	InvalidDBInstanceClass.NotFound	rw class code must be equal with hot replica	The specification of the secondary node must be the same as that of the primary node.
404	InvalidDBClusterId.Malformed	The specified parameter DBClusterId is not valid.	The specified DBClusterId parameter is invalid.
404	InvalidDBNodeId.NotFound	The DBNodeId provided does not exist in our records.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.