Querying AZs

Function

This API is used to query all available AZs when you create a dedicated load balancer.

One set of AZs is returned by default. When you create a dedicated load balancer, you can select one or more AZs only in this set.
In special scenarios, dedicated load balancers must be created in specific AZs. In the returned one or more sets of AZs, you can select as many AZs as you want as long as the selected AZs are in the same set. For example, if two sets [az1,az2] and [az2,az3] are returned, you can select az1 and az2 or az2 and az3, but cannot select az1 and az3.

Calling Method

For details, see Calling APIs.

URI

GET /v3/{project_id}/elb/availability-zones

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Specifies the project ID.

**Table 2** Query Parameters
Parameter	Mandatory	Type	Description
public_border_group	No	String	Specifies the AZ group.

Request Parameters

**Table 3** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	Specifies the token used for IAM authentication.

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
request_id	String	Specifies the request ID. The value is automatically generated.
availability_zones	Array<Array<AvailabilityZone>>	Specifies the AZs that are available during load balancer creation. For example, in [az1,az2] and [az2,az3] sets, you can select az1 and az2 or az2 and az3, but cannot select az1 and az3.

**Table 5** AvailabilityZone
Parameter	Type	Description
code	String	Specifies the AZ code.
state	String	Specifies the AZ status. The value can only be ACTIVE.
protocol	Array of strings	Specifies the type of the flavor that is available. L4 indicates the flavor at Layer 4 (flavor for network load balancing). L7 indicates the flavor at Layer 7 (flavor for application load balancing).
public_border_group	String	Specifies the AZ group, for example, center.
category	Integer	Specifies the AZ code. 0 indicates center. 21 indicates homezone.

Example Requests

Querying AZs where a load balancer works

GET https://{ELB_Endpoint}/v3/060576782980d5762f9ec014dd2f1148/elb/availability-zones

Example Responses

Status code: 200

Successful request.

{
  "availability_zones" : [ [ {
    "state" : "ACTIVE",
    "code" : "az1",
    "protocol" : [ "L4", "L7" ],
    "public_border_group" : "center",
    "category" : 0
  }, {
    "state" : "ACTIVE",
    "code" : "az2",
    "protocol" : [ "L4" ],
    "public_border_group" : "center",
    "category" : 0
  }, {
    "state" : "ACTIVE",
    "code" : "az3",
    "protocol" : [ "L7" ],
    "public_border_group" : "center",
    "category" : 0
  }, {
    "state" : "ACTIVE",
    "code" : "homezone.az0",
    "protocol" : [ "L4" ],
    "public_border_group" : "homezone.azg",
    "category" : 21
  } ] ],
  "request_id" : "0d799435-259e-459f-b2bc-0beee06f6a77"
}