Querying Health Checks

Function

This API is used to query all health checks.

Constraints

This API has the following constraints:

  • Parameters marker, limit, and page_reverse are used for pagination query.

  • Parameters marker and page_reverse take effect only when they are used together with parameter limit.

URI

GET /v3/{project_id}/elb/healthmonitors

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Specifies the project ID.

Table 2 Query Parameters

Parameter

Mandatory

Type

Description

marker

No

String

Specifies the ID of the last record on the previous page.

Note:

  • This parameter must be used together with limit.

  • If this parameter is not specified, the first page will be queried.

  • This parameter cannot be left blank or set to an invalid ID.

limit

No

Integer

Specifies the number of records on each page.

Minimum: 0

Maximum: 2000

Default: 2000

page_reverse

No

Boolean

Specifies whether to use reverse query. Values:

  • true: Query the previous page.

  • false (default): Query the next page.

Note:

  • This parameter must be used together with limit.

  • If page_reverse is set to true and you want to query the previous page, set the value of marker to the value of previous_marker.

id

No

Array

Specifies the health check ID.

Multiple IDs can be queried in the format of id=xxx&id=xxx.

monitor_port

No

Array

Specifies the port used for the health check.

Multiple ports can be queried in the format of monitor_port=xxx&monitor_port=xxx.

domain_name

No

Array

Specifies the domain name to which HTTP requests are sent during the health check.

The value can contain only digits, letters, hyphens (-), and periods (.) and must start with a digit or letter.

Multiple domain names can be queried in the format of domain_name=xxx&domain_name=xxx.

name

No

Array

Specifies the health check name.

Multiple names can be queried in the format of name=xxx&name=xxx.

delay

No

Array

Specifies the interval between health checks, in seconds. The value ranges from 1 to 50.

Multiple intervals can be queried in the format of delay=xxx&delay=xxx.

max_retries

No

Array

Specifies the number of consecutive health checks when the health check result of a backend server changes from OFFLINE to ONLINE.

Multiple values can be queried in the format of max_retries=xxx&max_retries=xxx.

admin_state_up

No

Boolean

Specifies the administrative status of the health check.

The value can be true (health check is enabled) or false (health check is disabled).

max_retries_down

No

Array

Specifies the number of consecutive health checks when the health check result of a backend server changes from ONLINE to OFFLINE. The value ranges from 1 to 10.

Multiple values can be queried in the format of max_retries_down=xxx&max_retries_down=xxx.

timeout

No

Integer

Specifies the maximum time required for waiting for a response from the health check, in seconds.

type

No

Array

Specifies the health check protocol. The value can be TCP, UDP_CONNECT, HTTP, or HTTPS.

Multiple protocols can be queried in the format of type=xxx&type=xxx.

expected_codes

No

Array

Specifies the expected HTTP status code. This parameter will take effect only when type is set to HTTP or HTTPS.

The value options are as follows:

  • A specific value, for example, 200

  • A list of values that are separated with commas (,), for example, 200, 202

  • A value range, for example, 200-204

The default value is 200. Multiple status codes can be queried in the format of expected_codes=xxx&expected_codes=xxx.

url_path

No

Array

Specifies the HTTP request path for the health check. The value must start with a slash (/), and the default value is /. This parameter is available only when type is set to HTTP.

Multiple paths can be queried in the format of url_path=xxx&url_path=xxx.

http_method

No

Array

Specifies the HTTP method.

The value can be GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, CONNECT, or PATCH.

Multiple methods can be queried in the format of http_method=xxx&http_method=xxx.

This parameter is unsupported. Please do not use it.

enterprise_project_id

No

Array

Specifies the enterprise project ID.

  • If this parameter is not passed, resources in the default enterprise project are queried, and authentication is performed based on the default enterprise project.

  • If this parameter is passed, its value can be the ID of an existing enterprise project (resources in the specific enterprise project are required) or all_granted_eps (resources in all enterprise projects are queried).

Multiple IDs can be queried in the format of enterprise_project_id=xxx&enterprise_project_id=xxx.

This parameter is unsupported. Please do not use it.

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.

page_info

PageInfo object

Shows pagination information.

healthmonitors

Array of HealthMonitor objects

Specifies the health check.

Table 5 PageInfo

Parameter

Type

Description

previous_marker

String

Specifies the ID of the first record in the pagination query result.

next_marker

String

Specifies the ID of the last record in the pagination query result.

current_count

Integer

Specifies the number of records.

Table 6 HealthMonitor

Parameter

Type

Description

admin_state_up

Boolean

Specifies the administrative status of the health check.

  • true(default) indicates that the health check is enabled.

  • false indicates that the health check is disabled.

delay

Integer

Specifies the interval between health checks, in seconds. The value ranges from 1 to 50.

Minimum: 1

Maximum: 50

domain_name

String

Specifies the domain name that HTTP requests are sent to during the health check.

The value can contain only digits, letters, hyphens (-), and periods (.) and must start with a digit or letter.

The value is left blank by default, indicating that the virtual IP address of the load balancer is used as the destination address of HTTP requests.

This parameter is available only when type is set to HTTP.

expected_codes

String

Specifies the expected HTTP status code. This parameter will take effect only when type is set to HTTP or HTTPS.

The value options are as follows:

  • A specific value, for example, 200

  • A list of values that are separated with commas (,), for example, 200, 202

  • A value range, for example, 200-204

The default value is 200. Multiple status codes can be queried in the format of expected_codes=xxx&expected_codes=xxx.

http_method

String

Specifies the HTTP method. The value can be GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, CONNECT, or PATCH. The default value is GET.

This parameter is available when type is set to HTTP or HTTPS.

This parameter is unsupported. Please do not use it.

id

String

Specifies the health check ID.

max_retries

Integer

Specifies the number of consecutive health checks when the health check result of a backend server changes from OFFLINE to ONLINE.

The value ranges from 1 to 10

Minimum: 1

Maximum: 10

max_retries_down

Integer

Specifies the number of consecutive health checks when the health check result of a backend server changes from ONLINE to OFFLINE.

The value ranges from 1 to 10, and the default value is 3.

Minimum: 1

Maximum: 10

monitor_port

Integer

Specifies the port used for the health check. If this parameter is left blank, a port of the backend server will be used by default. The port number ranges from 1 to 65535.

Minimum: 1

Maximum: 65535

name

String

Specifies the health check name.

pools

Array of PoolRef objects

Lists the IDs of backend server groups for which the health check is configured. Only one ID will be returned.

project_id

String

Specifies the project ID.

timeout

Integer

Specifies the maximum time required for waiting for a response from the health check, in seconds. It is recommended that you set the value less than that of parameter delay.

Minimum: 1

Maximum: 50

type

String

Specifies the health check protocol. The value can be TCP, UDP_CONNECT, HTTP, or HTTPS.

Note:

  • If the protocol of the backend server is QUIC, the value can only be UDP_CONNECT.

  • If the protocol of the backend server is UDP, the value can only be UDP_CONNECT.

  • If the protocol of the backend server is TCP, the value can only be TCP, HTTP, or HTTPS.

  • If the protocol of the backend server is HTTP, the value can only be TCP, HTTP, or HTTPS.

  • If the protocol of the backend server is HTTPS, the value can only be TCP, HTTP, or HTTPS.

url_path

String

Specifies the HTTP request path for the health check. The value must start with a slash (/), and the default value is /. Note: This parameter is available only when type is set to HTTP.

created_at

String

Specifies the time when the health check was configured. The format is yyyy-MM-dd'T'HH:mm:ss'Z' (UTC time).

This is a new field in this version, and it will not be returned for resources associated with existing dedicated load balancers and for resources associated with existing and new shared load balancers.

updated_at

String

Specifies the time when the health check was updated. The format is yyyy-MM-dd'T'HH:mm:ss'Z' (UTC time).

This is a new field in this version, and it will not be returned for resources associated with existing dedicated load balancers and for resources associated with existing and new shared load balancers.

Table 7 PoolRef

Parameter

Type

Description

id

String

Specifies the ID of the backend server group.

Example Requests

GET https://{ELB_Endpoint}/v3/99a3fff0d03c428eac3678da6a7d0f24/elb/healthmonitors

Example Responses

Status code: 200

Successful request.

{
  "healthmonitors" : [ {
    "monitor_port" : null,
    "id" : "c2b210b2-60c4-449d-91e2-9e9ea1dd7441",
    "project_id" : "99a3fff0d03c428eac3678da6a7d0f24",
    "domain_name" : null,
    "name" : "My Healthmonitor update",
    "delay" : 10,
    "max_retries" : 10,
    "pools" : [ {
      "id" : "488acc50-6bcf-423d-8f0a-0f4184f5b8a0"
    } ],
    "admin_state_up" : true,
    "timeout" : 30,
    "type" : "HTTP",
    "expected_codes" : "200",
    "url_path" : "/",
    "http_method" : "GET"
  }, {
    "monitor_port" : null,
    "id" : "cda1af03-0660-4fd2-8edf-e38c79846e08",
    "project_id" : "99a3fff0d03c428eac3678da6a7d0f24",
    "domain_name" : "akik..un.com",
    "name" : "lijunqiu",
    "delay" : 50,
    "max_retries" : 1,
    "pools" : [ {
      "id" : "ae6e45ba-be84-4074-8ac6-bc4a56484809"
    } ],
    "admin_state_up" : false,
    "timeout" : 3,
    "type" : "UDP_CONNECT",
    "expected_codes" : null,
    "url_path" : "/world",
    "http_method" : null
  } ],
  "page_info" : {
    "next_marker" : "cda1af03-0660-4fd2-8edf-e38c79846e08",
    "previous_marker" : "c2b210b2-60c4-449d-91e2-9e9ea1dd7441",
    "current_count" : 2
  },
  "request_id" : "814bc40e-8b0a-4ced-b8e5-f136c3e1df6a"
}

Status Codes

Status Code

Description

200

Successful request.

Error Codes

See Error Codes.

last updated: 2024-12-10 15:19 UTC - commit: ce8dfe31a7e62df8f351b369251e4667fec0f78a