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ApsaraDB for MyBase:DescribeDedicatedHostAttribute

Last Updated:Oct 28, 2025

Queries the parameter settings of a host in a dedicated cluster.

Debugging

You can run this interface directly in OpenAPI Explorer, saving you the trouble of calculating signatures. After running successfully, OpenAPI Explorer can automatically generate SDK code samples.

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:
    • For mandatory resource types, indicate with a prefix of * .
    • 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.
OperationAccess levelResource typeCondition keyAssociated operation
cddc:DescribeDedicatedHostAttributeget
*All Resources
*
    none
none

Request parameters

ParameterTypeRequiredDescriptionExample
RegionIdstringNocn-hangzhou
DedicatedHostIdstringYes

The host ID. You can log on to the ApsaraDB for MyBase console and go to the Hosts page to view the host ID.

ch-bp10a5id3boqi****
DedicatedHostGroupIdstringYes

The ID of the dedicated cluster in which the host is created. You can log on to the ApsaraDB for MyBase console and go to the Dedicated Clusters page to view the dedicated cluster ID.

dhg-34639v1jt4y4****

Response parameters

ParameterTypeDescriptionExample
object
HostTypestring

The storage type of the host. Valid values:

  • dhg_cloud_ssd or dhg_cloud_essd: enhanced SSD (ESSD).
  • dhg_local_ssd: local SSD.
dhg_cloud_ssd
HostStorageinteger

The total storage of the host. Unit: GB.

100
InstanceNumberROSlaveinteger

The number of secondary instances of the read-only instance deployed on the host.

1
AccountTypestring

The account type of the host. Valid values:

  • Normal: standard account.
  • Admin: administrator account.
Admin
MemoryUsedstring

The amount of memory used by the host. Unit: GB.

24576
DedicatedHostGroupIdstring

The ID of the dedicated cluster in which the host is created.

dhg-34639v1jt4y4****
RequestIdstring

The request ID.

00A001D6-2630-5CBD-A23C-80BC1BAFDC31
InstanceNumberROMasterinteger

The number of primary instances of the read-only instance deployed on the host.

1
AllocationStatusstring

Indicates whether instances can be deployed on the host. Valid values:

  • Allocatable: yes.
  • Suspended: no.
Suspended
StorageUsedstring

The storage usage of the host. Unit: GB.

588800
EcsClassCodestring

The instance type of the Elastic Compute Service (ECS) instance.

ecs.r5.16xlarge
DedicatedHostIdstring

The host ID.

ch-bp10a5id3boqi****
MemAllocationRatiostring

The memory usage of the host. Unit: %.

90
CreatedTimestring

The time when the host was created. The time follows the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time is displayed in UTC.

2021-11-13T07:14:22Z
IPAddressstring

The IP address of the host.

192.168.XX.XX
AutoRenewstring

Indicates whether auto-renewal is enabled on the host. Valid values:

  • true
  • false (default)
false
HostStatusstring

The state of the host. Valid values:

  • 0: The host is being created.
  • 1: The host is running.
  • 2: The host is faulty.
  • 3: The host is ready for disabling.
  • 4: The host is being maintained.
  • 5: The host is disabled.
  • 6: The host is restarting.
  • 7: The host is locked.
Note When a host fails, the host is disabled. Before the host is disabled, the data of the instances that run on the host is migrated to another host. This ensures data integrity.
1
HostNamestring

The name of the host.

ch-8vbj9x74z874o****
HostCPUinteger

The number of CPU cores of the host.

16
OpenPermissionstring

Indicates whether the host OS permissions are grated. Valid values:

  • 0: no.
  • 1: yes.
1
InstanceNumberinteger

The number of instances deployed on the host.

3
CpuUsedstring

The number of CPU cores used by the host.

36
VPCIdstring

The virtual private cloud (VPC) ID.

vpc-wz9vu1jb32wn3sdd6****
HostClassstring

The instance type of the host.

mssql.host.c2xlarge
RegionIdstringcn-hangzhou
InstanceNumberMasterinteger

The number of primary instances deployed on the host.

4
VSwitchIdstring

The vSwitch ID.

vsw-bp1kaugqyrzb58oc1****
InstanceNumberSlaveinteger

The number of secondary instances deployed on the host.

1
ExpiredTimestring

The expiration time of the host. The time follows the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time is displayed in UTC.

2022-03-16T16:00:00Z
ZoneIdstring

The zone ID.

cn-hangzhou-h
CPUAllocationRatiostring

The CPU overcommit ratio of the dedicated cluster. Unit: %. The value is accurate to the tens digit.

200
ImageCategorystring

The image of the host. This parameter is returned only when the database engine is SQL Server. Valid values:

  • WindowsWithMssqlEntAlwaysonLicense: SQL Server Cluster Edition (AlwaysOn).
  • WindowsWithMssqlStdLicense: SQL Server Standard Edition.
  • WindowsWithMssqlEntLicense: SQL Server Enterprise Edition.
  • WindowsWithMssqlWebLicense: SQL Server Web Edition.
WindowsWithMssqlStdLicense
DiskAllocationRatiostring

The storage overcommit ratio of the dedicated cluster.

200
HostMeminteger

The memory size of the host. Unit: MB.

2048
AccountNamestring

The account name of the host.

  • The name can contain lowercase letters, digits, and underscores (_).
  • The name must start with a lowercase letter and end with a lowercase letter or a digit.
  • The name must be 2 to 16 characters in length.
cdp_system
DistributionTagstring

The distribution tag of the host.

tag

Examples

Sample success responses

JSONformat

{
  "HostType": "dhg_cloud_ssd",
  "HostStorage": 100,
  "InstanceNumberROSlave": 1,
  "AccountType": "Admin",
  "MemoryUsed": 24576,
  "DedicatedHostGroupId": "dhg-34639v1jt4y4****",
  "RequestId": "00A001D6-2630-5CBD-A23C-80BC1BAFDC31",
  "InstanceNumberROMaster": 1,
  "AllocationStatus": "Suspended",
  "StorageUsed": 588800,
  "EcsClassCode": "ecs.r5.16xlarge",
  "DedicatedHostId": "ch-bp10a5id3boqi****",
  "MemAllocationRatio": 90,
  "CreatedTime": "2021-11-13T07:14:22Z",
  "IPAddress": "192.168.XX.XX",
  "AutoRenew": false,
  "HostStatus": 1,
  "HostName": "ch-8vbj9x74z874o****",
  "HostCPU": 16,
  "OpenPermission": 1,
  "InstanceNumber": 3,
  "CpuUsed": 36,
  "VPCId": "vpc-wz9vu1jb32wn3sdd6****",
  "HostClass": "mssql.host.c2xlarge",
  "RegionId": "cn-hangzhou",
  "InstanceNumberMaster": 4,
  "VSwitchId": "vsw-bp1kaugqyrzb58oc1****",
  "InstanceNumberSlave": 1,
  "ExpiredTime": "2022-03-16T16:00:00Z",
  "ZoneId": "cn-hangzhou-h",
  "CPUAllocationRatio": 200,
  "ImageCategory": "WindowsWithMssqlStdLicense",
  "DiskAllocationRatio": 200,
  "HostMem": 2048,
  "AccountName": "cdp_system",
  "DistributionTag": "tag"
}

Error codes

HTTP status codeError codeError messageDescription
400InvalidUserId.NotSupportThe userid have no permission.-
403Forbidden.RAMUser not authorized to operate on the specified resource, or this API does not support RAM.The user is not authorized to operate on the specified resource.
403Permission.NotSupportThe user permission does not support the operation.The user does not have permission to perform the operation.
404InvalidDedicatedHostGroup.NotFoundSpecified DedicatedHostGroup does not exists.-

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

Change history

Change timeSummary of changesOperation
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