DescribeDBClusters - PolarDB - Alibaba Cloud Documentation Center

Queries PolarDB clusters or the clusters that can be accessed by an authorized RAM user.

Debugging

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Debug

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

Operation: the value that you can use in the Action element to specify the operation on a resource.
Access level: the access level of each operation. The levels are read, write, and list.
Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
Condition Key: the condition key that is defined by the cloud service.
Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.

Operation	Access level	Resource type	Condition key	Associated operation
polardb:DescribeDBClusters	list	DBCluster acs:polardb:{#regionId}:{#accountId}:dbcluster/{#DbClusterId}	none	none

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID of the cluster. Note You can call the DescribeRegions operation to query the available regions.	cn-hangzhou
DBClusterIds	string	No	The ID of the cluster. Separate multiple cluster IDs with commas (,).	pc-****************
DBClusterDescription	string	No	The description of the cluster. Fuzzy match is supported.	pc-****************
ConnectionString	string	No	The endpoint of the cluster.	********.rwlb.polardb-pg-public.rds.aliyuncs.com
DBClusterStatus	string	No	The state of the cluster that you want to query. For information about valid values, see Cluster states.	Running
DBType	string	No	The database engine that the cluster runs. Valid values: MySQL PostgreSQL Oracle	MySQL
DescribeType	string	No	The query mode of the list. The value Simple indicates that the simple mode is used. In this mode, only the basic metadata information of the cluster is returned. Note If you do not specify this parameter, the detailed mode is used by default. Detailed information about the cluster is returned.	Simple
DBVersion	string	No	The database engine version of the cluster.	5.6
RecentCreationInterval	integer	No	Filters clusters created in the last N days. Valid values: 0 to 15.	7
RecentExpirationInterval	integer	No	Filters clusters that expire after N days. Valid values: 0 to 15.	6
Expired	boolean	No	Specifies whether the cluster has expired. Valid values: true false	true
PageSize	integer	No	The number of entries per page. Valid values: 30, 50, and 100. Default value: 30.	30
PageNumber	integer	No	The page number. The value must be an integer that is greater than 0. Default value: 1.	10
ResourceGroupId	string	No	The ID of the resource group.	rg-**********
Tag	array<object>	No	The tags of the cluster.
	object	No	1
Key	string	No	The key of the tag. You can use tags to filter clusters. You can specify up to 20 tags. N specifies the serial number of each tag. The values that you specify for N must be unique and consecutive integers that start from 1. The value of Tag.N.Key is Tag.N.Value. Note The tag key can be up to 64 characters in length and cannot start with `aliyun`, `acs:`, `http://`, or `https://`.	MySQL
Value	string	No	The value of the tag. Note The tag value can be up to 64 characters in length and cannot start with `aliyun`, `acs:`, `http://`, or `https://`.	5.6
PayType	string	No	The billing method. Valid values: Postpaid: pay-as-you-go Prepaid: subscription	Postpaid
DBNodeIds	string	No	The ID of the node. You can specify multiple node IDs. Separate multiple node IDs with commas (,).	pi-***************

Response parameters

Parameter	Type	Description	Example
	object
TotalRecordCount	integer	The total number of returned entries.	16
PageRecordCount	integer	The number of clusters returned per page.	5
RequestId	string	The ID of the request.	9B7BFB11-C077-4FE3-B051-F69CEB******
PageNumber	integer	The number of the page to return.	12
Items	array<object>	The information about the clusters.
DBCluster	object
VpcId	string	The virtual private cloud (VPC) ID of the cluster.	vpc-****************
VswitchId	string	The vSwitch ID of the cluster.	vsw-***************
ExpireTime	string	The expiration time of the cluster. Note A specific value is returned only for subscription (Prepaid) clusters. For pay-as-you-go (Postpaid) clusters, no value is returned.	2020-11-14T16:00:00Z
Expired	string	Indicates whether the cluster has expired. Valid values: true false Note A specific value is returned only for subscription (Prepaid) clusters.	false
DBNodeNumber	integer	The number of nodes.	2
CreateTime	string	The time when the cluster was created.	2020-08-14T05:58:42Z
PayType	string	The billing method of the cluster. Valid values: Postpaid: pay-as-you-go Prepaid: subscription	Prepaid
StoragePayType	string	The storage billing method of the cluster. Valid values: Postpaid: pay-as-you-go Prepaid: subscription	Prepaid
ServerlessType	string	Indicates whether the cluster is a serverless cluster. AgileServerless indicates the cluster is a serverless cluster. No value is returned for a common cluster.	AgileServerless
StrictConsistency	string	Indicates whether multi-zone data consistency is enabled for the cluster. Valid values: ON: Multi-zone data consistency is enabled. For Standard Edition clusters of Multi-zone Edition, this value is returned. OFF: Multi-zone data consistency is disabled.	ON
DBNodeClass	string	The specifications of the node.	polar.mysql.x4.large
Tags	array<object>	The information about the tags.
Tag	object	1
Key	string	The key of the tag.	MySQL
Value	string	The value of the tag.	5.6
DBType	string	The type of the database engine.	MySQL
LockMode	string	The lock state of the cluster. Valid values: Unlock: The cluster is unlocked. ManualLock: The cluster is manually locked. LockByExpiration: The cluster is locked due to cluster expiration.	Unlock
DBNodes	array<object>	The information about the nodes.
DBNode	object
DBNodeClass	string	The specifications of the node.	polar.mysql.x4.large
ZoneId	string	The zone ID of the cluster.	cn-hangzhou-i
DBNodeRole	string	The role of the node. Valid values: Writer: primary node Reader: read-only node ColumnReader: column store read-only node AI: AI node	Reader
DBNodeId	string	The ID of the node.	pi-****************
RegionId	string	The region ID of the cluster.	cn-hangzhou
Serverless	string	Indicates whether the serverless feature is enabled for the node. ON indicates that the serverless feature is enabled. No value is returned if the serverless feature is disabled.	ON
ImciSwitch	string	Indicates whether the In-Memory Column Index (IMCI) feature is enabled. Valid values: ON OFF	OFF
HotReplicaMode	string	Indicates whether the hot standby feature is enabled. Valid values: ON OFF	OFF
RegionId	string	The region ID of the cluster.	cn-hangzhou
DeletionLock	integer	Indicates whether the cluster is protected from deletion. Valid values: 0: The cluster is not protected from deletion. 1: The cluster is protected from deletion. Note You cannot delete clusters that are protected from deletion.	0
DBVersion	string	The version of the database engine.	5.6
DBClusterId	string	The cluster ID.	pc-****************
DBClusterStatus	string	The state of the cluster.	Running
ResourceGroupId	string	The ID of the resource group.	rg-************
StorageUsed	long	The used storage. Unit: bytes.	3009413120
StorageSpace	long	The storage that is billed based on the subscription billing method. Unit: bytes.	50
DBClusterNetworkType	string	The network type of the cluster.	VPC
DBClusterDescription	string	The description of the cluster.	GDN-1
ZoneId	string	The zone ID of the cluster.	cn-hangzhou-i
Engine	string	The database engine of the cluster.	POLARDB
Category	string	The edition of the cluster. Valid values: Normal: Cluster Edition Basic: Single Node Edition Archive: X-Engine Edition NormalMultimaster: Multi-master Cluster (Database/Table) Edition	Normal
AiType	string	The type of the AI node. Valid values: SearchNode: search node DLNode: AI node Enumeration values: SearchNode \| DLNode: both DLNode: AI node SearchNode: search node Enumeration Value: SearchNode\|DLNode: Both. DLNode: DLNode. SearchNode: SearchNode.	SearchNode
CpuCores	string	The number of CPU cores.	1
MemorySize	string	The memory size for local operations. Unit: MB.	2048
RemoteMemorySize	string	The memory size for distributed operations. Unit: MB.	3612
SubCategory	string	The specification type of the compute node. Valid values: Exclusive: dedicated. General: general-purpose.	Exclusive
StorageType	string	The storage type.	essdautopl
HotStandbyCluster	string	Indicates whether the hot standby storage cluster feature is enabled. Valid values: ON OFF	OFF

Examples

Sample success responses

JSONformat

{
  "TotalRecordCount": 16,
  "PageRecordCount": 5,
  "RequestId": "9B7BFB11-C077-4FE3-B051-F69CEB******",
  "PageNumber": 12,
  "Items": {
    "DBCluster": [
      {
        "VpcId": "vpc-****************",
        "VswitchId": "vsw-***************",
        "ExpireTime": "2020-11-14T16:00:00Z",
        "Expired": "false",
        "DBNodeNumber": 2,
        "CreateTime": "2020-08-14T05:58:42Z",
        "PayType": "Prepaid",
        "StoragePayType": "Prepaid",
        "ServerlessType": "AgileServerless",
        "StrictConsistency": "ON",
        "DBNodeClass": "polar.mysql.x4.large",
        "Tags": {
          "Tag": [
            {
              "Key": "MySQL",
              "Value": "5.6"
            }
          ]
        },
        "DBType": "MySQL",
        "LockMode": "Unlock",
        "DBNodes": {
          "DBNode": [
            {
              "DBNodeClass": "polar.mysql.x4.large",
              "ZoneId": "cn-hangzhou-i",
              "DBNodeRole": "Reader",
              "DBNodeId": "pi-****************",
              "RegionId": "cn-hangzhou",
              "Serverless": "ON",
              "ImciSwitch": "OFF",
              "HotReplicaMode": "OFF"
            }
          ]
        },
        "RegionId": "cn-hangzhou",
        "DeletionLock": 0,
        "DBVersion": "5.6",
        "DBClusterId": "pc-****************",
        "DBClusterStatus": "Running",
        "ResourceGroupId": "rg-************",
        "StorageUsed": 3009413120,
        "StorageSpace": 50,
        "DBClusterNetworkType": "VPC",
        "DBClusterDescription": "GDN-1",
        "ZoneId": "cn-hangzhou-i",
        "Engine": "POLARDB",
        "Category": "Normal",
        "AiType": "SearchNode",
        "CpuCores": "1",
        "MemorySize": "2048",
        "RemoteMemorySize": "3612",
        "SubCategory": "Exclusive",
        "StorageType": "essdautopl",
        "HotStandbyCluster": "OFF"
      }
    ]
  }
}

Error codes

HTTP status code	Error code	Error message	Description
400	InvalidRegionId.Malformed	The specified parameter RegionId is not valid.	The specified RegionId parameter is invalid.
400	NumberExceed.Tags	The Tags parameter's number is exceed.	The number of tags specified in the tags parameter exceeds the limit.
400	InvalidPageSize.Malformed	The specified parameter PageSize is not valid.	The specified PageSize parameter is invalid.
400	InvalidPageNumber.Malformed	The specified parameter PageNumber is not valid.	The specified PageNumber parameter is invalid.
400	InvalidRecentCreationInterval.Malformed	The specified parameter RecentCreationInterval is not valid.	The specified RecentCreationInterval parameter is invalid.
400	InvalidRecentExpirationInterval.Malformed	The specified parameter RecentExpirationInterval is not valid.	The specified RecentExpirationInterval parameter is invalid.
404	DBTypeOrDBVersion.Malformed	The specified DBType does not match DBVersion.	The specified values of DBType and DBVersion do not match.
500	InternalError	The request processing has failed due to some unknown error, exception or failure.	The request failed to be processed because unknown errors, exceptions, or failures have occurred.
503	ServiceUnavailable	The request has failed due to a temporary failure of the server.	A temporary server error occurred.

For a list of error codes, visit the Service error codes.

Change history

Change time	Summary of changes	Operation
2024-07-24	The Error code has changed. The response structure of the API has changed	View Change Details
2024-06-25	The Error code has changed. The response structure of the API has changed	View Change Details
2024-04-09	The Error code has changed. The response structure of the API has changed	View Change Details
2023-12-26	The Error code has changed. The request parameters of the API has changed	View Change Details
2023-09-12	The Error code has changed	View Change Details
2023-08-09	API Description Update. The Error code has changed	View Change Details
2023-07-07	The Error code has changed. The response structure of the API has changed	View Change Details
2023-06-20	The Error code has changed. The response structure of the API has changed	View Change Details
2023-04-13	The Error code has changed. The response structure of the API has changed	View Change Details
2023-04-11	The Error code has changed. The response structure of the API has changed	View Change Details
2023-03-31	The Error code has changed	View Change Details
2022-09-15	The Error code has changed. The response structure of the API has changed	View Change Details
2022-09-15	The Error code has changed. The response structure of the API has changed	View Change Details
2022-06-02	The Error code has changed. The response structure of the API has changed	View Change Details