DescribeInstanceTopology - ApsaraDB for OceanBase - Alibaba Cloud Documentation Center

You can call this operation to query the topology of an OceanBase 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.

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
oceanbase:DescribeInstanceTopology	get	All Resources *	none	none

Request parameters

Parameter	Type	Required	Description	Example
InstanceId	string	Yes	The status of the node.	ob317v4uif****

Response parameters

Parameter	Type	Description	Example
	object	The information of node resources.
RequestId	string	The information about the CPU resources of the node.	EE205C00-30E4-XXXX-XXXX-87E3A8A2AA0C
InstanceTopology	object	The number of CPU cores used by the node.
Tenants	array<object>	The total number of CPU cores for the node.
Tenants	object	The information about the CPU resources of the node.
TenantId	string	The size of used memory of the node, in GB.	t33h8y08k****
TenantName	string	The total memory size of the node, in GB.	pay_online
TenantCpu	float	The information about the memory resources of the node.	2
TenantMemory	float	The total storage space of the node, in GB.	10
TenantMode	string	The size of used storage space of the node, in GB.	Oracle
TenantZones	array<object>	The information about the storage resources of the node.
TenantZones	object	The information of node resources.
TenantZoneRole	string	The information of zones.	ReadWrite
IsPrimaryTenantZone	string	The maximum disk usage, in percentage.	true
TenantZoneId	string	The server with the highest disk usage.	cn-hangzhou-h
Units	array<object>	The information about the storage resources.
Units	object	The resource information of the zones.
UnitId	string	The topology of the cluster.	1002
UnitStatus	string	You can call this operation to query the topology of an OceanBase cluster.	ONLINE
NodeId	string	It is an online CLI tool that allows you to quickly retrieve and debug APIs. It can dynamically generate executable SDK code samples.	i-bp16niirq4zdmgvm****
UnitCpu	float	Alibaba Cloud CLI	2
UnitMemory	float	The ID of the tenant.	10
EnableMigrateUnit	boolean	The return result of the request.	true
ManualMigrate	boolean	The return result of the request.	true
EnableCancelMigrateUnit	boolean	Indicates whether the migration can be canceled. This field is valid only for units that are being manually immigrated or emigrated.	true
UnitDataSize	long	The operation that you want to perform. Set the value to DescribeInstanceTopology.	10
TenantStatus	string	The size of used memory of the node, in GB.	ONLINE
TenantDeployType	string	The name of the tenant.	multiple
TenantUnitNum	integer	The number of CPU cores of the tenant.	1
PrimaryZoneDeployType	string	The server with the highest disk usage. Enumeration Value: RANDOM: RANDOM. STATIC: STATIC.	RANDOM
Zones	array<object>	The information about resource units.
Zones	object	Indicates whether the migration is manually performed.
ZoneId	string	The information of the tenant.	cn-hangzhou-i
Region	string	The zone information of the cluster.	cn-hangzhou
ZoneDisk	string	The information about the memory resources of the node.	200 GB
Nodes	array<object>	The ID of the region.
Nodes	object	The status of the resource unit. Valid values: ONLINE: The resource unit is running. IMMIGRATING: The resource unit is being immigrated. EMIGRATING: The resource unit is being emigrated. CANCEL_EMIGRATING: Resource node immigration is being canceled. CANCEL_EMIGRATING: Resource node emigration is being canceled. DELETING: The resource unit is being deleted.
NodeId	string	The ID of the resource unit.	i-bp16niirq4zdmgvm****
NodeCopyId	long	The information of zones.	1
NodeStatus	string	The ID of the OBServer where the resource unit resides.	ONLINE
NodeResource	array<object>	The ID of the node.
NodeResource	object	The topology of the cluster.
Cpu	object	The memory size of the tenant, in GB.
UsedCpu	float	Indicates whether migration can be performed.	4
TotalCpu	integer	The size of used storage space of the node, in GB.	14
Memory	object	The role to access the zone. Valid values: ReadWrite: a role that has the read and write privileges. ReadOnly: a role that has only the read-only privilege.
UsedMemory	float	The information of node resources.	10
TotalMemory	long	The ID of the replica node.	70
DiskSize	object	The information about the CPU resources of the node.
TotalDiskSize	double	The deployment type of the primary zone.	400
UsedDiskSize	double	The status of the tenant. PENDING_CREATE: The tenant is being created. RESTORE: The tenant is being recovered. ONLINE: The tenant is running. SPEC_MODIFYING: The specification of the tenant is being modified. ALLOCATING_INTERNET_ADDRESS: An Internet address is being allocated. PENDING_OFFLINE_INTERNET_ADDRESS: The Internet address is being disabled. PRIMARY_ZONE_MODIFYING: The tenant is switching to a new primary zone. PARAMETER_MODIFYING: Parameters are being modified. WHITE_LIST_MODIFYING: The whitelist is being modified.	200
ZoneResource	object	Example 1
DiskSize	object
MaxDiskUsedPercent	double	DescribeInstanceTopology	0.14

Examples

Sample success responses

JSONformat

{
  "RequestId": "EE205C00-30E4-XXXX-XXXX-87E3A8A2AA0C",
  "InstanceTopology": {
    "Tenants": [
      {
        "TenantId": "t33h8y08k****",
        "TenantName": "pay_online",
        "TenantCpu": 2,
        "TenantMemory": 10,
        "TenantMode": "Oracle",
        "TenantZones": [
          {
            "TenantZoneRole": "ReadWrite",
            "IsPrimaryTenantZone": "true",
            "TenantZoneId": "cn-hangzhou-h",
            "Units": [
              {
                "UnitId": "1002",
                "UnitStatus": "ONLINE",
                "NodeId": "i-bp16niirq4zdmgvm****",
                "UnitCpu": 2,
                "UnitMemory": 10,
                "EnableMigrateUnit": true,
                "ManualMigrate": true,
                "EnableCancelMigrateUnit": true,
                "UnitDataSize": 10
              }
            ]
          }
        ],
        "TenantStatus": "ONLINE",
        "TenantDeployType": "multiple",
        "TenantUnitNum": 1,
        "PrimaryZoneDeployType": "RANDOM"
      }
    ],
    "Zones": [
      {
        "ZoneId": "cn-hangzhou-i",
        "Region": "cn-hangzhou",
        "ZoneDisk": "200 GB",
        "Nodes": [
          {
            "NodeId": "i-bp16niirq4zdmgvm****",
            "NodeCopyId": 1,
            "NodeStatus": "ONLINE",
            "NodeResource": [
              {
                "Cpu": {
                  "UsedCpu": 4,
                  "TotalCpu": 14
                },
                "Memory": {
                  "UsedMemory": 10,
                  "TotalMemory": 70
                },
                "DiskSize": {
                  "TotalDiskSize": 400,
                  "UsedDiskSize": 200
                }
              }
            ]
          }
        ],
        "ZoneResource": {
          "DiskSize": {
            "MaxDiskUsedPercent": 0.14,
            "MaxDiskUsedObServer": [
              "i-bp1fhj23fs32dfbg4****"
            ]
          }
        }
      }
    ]
  }
}

Error codes

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

Change history

Change time	Summary of changes	Operation
2024-07-04	The response structure of the API has changed	View Change Details
2024-06-06	The response structure of the API has changed	View Change Details
2024-04-15	The response structure of the API has changed	View Change Details
2023-12-26	The response structure of the API has changed	View Change Details
2022-09-28	The response structure of the API has changed	View Change Details
2021-08-19	Add Operation	View Change Details