Describe Application Load Balancer Listener - DescribeListeners

Overview

Describe a specified listener or all listeners under an application type load balancing instance

Definition

Public Parameters

Parameter Name	Type	Description Information	Required
Action	string	Corresponding API command name, the current API is `DescribeListeners`.	Yes
PublicKey	string	The user's public key can be obtained from Console (opens in a new tab)	Yes
Signature	string	User signature generated based on public key and API command, see Signature Algorithm	Yes

Request Parameters

Parameter Name	Type	Description Information	Required
Region	string	Region. See List of Regions and Availability Zones	Yes
ProjectId	string	Project ID. If not filled in, the default project is used, sub-accounts must be filled in. Please refer to the GetProjectList interface.	Yes
ListenerId	string	The ID of the application load balancer listener. If ListenerId is specified, LoadBalancerId is ignored. Either ListenId or LoadBalancerId must be selected.	No
LoadBalancerId	string	The ID of the application load balancer instance. If ListenId is not specified, it describes all listeners under the specified LoadBalancerId.	No
Offset	int	Data offset, default is 0	No
Limit	int	Data pagination value, default is 100	No

Response Field

Field Name	Type	Description Information	Required
RetCode	int	Return status code. If it is 0, it means successful return. If it is not 0, it means failure.	Yes
Action	string	Operation command name.	Yes
Message	string	Returns an error message, providing detailed description when `RetCode` is non-zero.	No
TotalCount	int	Total number of load balancer listeners that meet the conditions	No
Listeners	array[Listener]	Load Balancer Listener Information	No

Data Model

Listener

Field Name	Type	Description Information	Required
ListenerId	string	Listener's ID	No
Name	string	Name of the Listener	No
Remark	string	Remarks on the Listener	No
ListenerPort	int	Listener's Listening Port	No
ListenerProtocol	string	Monitoring Protocol. Application-specific limited values: HTTP, HTTPS.	No
Certificates	array[Certificate]	(Application-specific) Default server certificate ID. Only HTTPS listening is supported. For specific interface details, see Certificate.	No
SecurityPolicyId	string	(Application-specific) Security policy group ID. Only HTTPS listening supports binding; Default -> Native policy	No
IdleTimeout	int	Connection idle timeout. Unit: seconds.	No
Scheduler	string	Load Balancing Algorithm. Application-specific limited values: Roundrobin -> Round Robin; Source -> Source Address; WeightRoundrobin -> Weighted Round Robin; Leastconn -> Least Connections; Backup -> Master-Slave Mode	No
StickinessConfig	StickinessConfigSet	Configuration related to session persistence. For detailed structure, see StickinessConfigSet.	No
HealthCheckConfig	HealthCheckConfigSet	Configuration related to Health Check. For specific structure, see HealthCheckConfigSet.	No
CompressionEnabled	boolean	(Application-specific) Whether to enable data compression function. Currently, only gzip is supported to compress specific file types.	No
HTTP2Enabled	boolean	(Application-specific) Whether to enable the HTTP/2 feature. Only HTTPS listening supports enabling.	No
RedirectEnabled	boolean	(Application-specific) Whether to enable HTTP redirection to HTTPS. Only HTTP listening supports enabling.	No
RedirectPort	int	(Application-specific) Redirect Port	No
Targets	array[Target]	Information of the added service node. See Target for specific structure.	No
Rules	array[Rule]	(Application-specific) Forwarding Rule Information	No
State	string	Listener health status. Limited enumeration values: Healthy -> Healthy, Unhealthy -> Unhealthy, PartialHealth -> Partially Healthy, None -> No node status.	No

Certificate

Field Name	Type	Description Information	Required
SSLId	string	Certificate ID	No
IsDefault	boolean	Is it the default certificate?	No

StickinessConfigSet

Field Name	Type	Description Information	Required
Enabled	boolean	Whether to enable the session persistence feature. The application load balancing instance is implemented based on Cookie.	No
Type	string	(Application-specific) Cookie processing method. Limited enumeration values: ServerInsert -> Automatically generate KEY; UserDefined -> User-defined KEY.	No
CookieName	string	(Application-specific) Custom Cookie. Effective when the StickinessType value is "UserDefined"."""	No

HealthCheckConfigSet

Field Name	Type	Description Information	Required
Enabled	boolean	Whether to enable the health check function. Temporarily does not support closing. The default value is: true	No
Type	string	Health check method. Application type limited values: Port -> Port check; HTTP -> HTTP check; Default value: Port	No
Domain	string	(Application-specific) HTTP check domain. This field is meaningful when Type is HTTP, representing the HTTP check domain.	No
Path	string	(Application-specific) HTTP check path. This field is meaningful when the Type is HTTP, representing the HTTP check path.	No

Target

Field Name	Type	Description Information	Required
ResourceType	string	The type of service node. Limited enumeration values: UHost -> Cloud Host, UNI -> Virtual Network Interface, UPM -> Physical Cloud Host, IP -> IP type; Default value: "UHost"; For non-IP types, if the resource has multiple IPs, only the main IP can be added; For non-IP types, related resource information will be displayed during the display, and only IP information will be displayed for IP types. When the related resource is deleted, the non-IP type will remove the related resource from lb, and the IP type does not guarantee this logic.	No
ResourceId	string	Resource ID of the service node	No
ResourceName	string	Resource Name of Service Node	No
VPCId	string	Service node's VPC resource ID	No
SubnetId	string	Subnet resource ID of the service node	No
ResourceIP	string	IP of the service node	No
Port	int	Port of the service node	No
Weight	int	Weight of the service node. Only effective when the weighted round-robin algorithm is used.	No
Enabled	boolean	Is the service node enabled?	No
IsBackup	boolean	Is the service node a backup node?	No
Id	string	The identification ID of the service node. Used in ALB/NLB, unrelated to the resource's own ID, can be used for UpdateTargetsAttribute/RemoveTargets.	No
State	string	Health check status of the service node. Limited enumeration values: Healthy -> Healthy, Unhealthy -> Unhealthy	No

Rule

Field Name	Type	Description Information	Required
RuleId	string	ID of the forwarding rule	No
RuleConditions	array[RuleCondition]	Forwarding rule matching conditions. See RuleCondition for specific structure.	No
RuleActions	array[RuleAction]	Forwarding action. For specific rules, see RuleAction.	No
IsDefault	boolean	Is it the default forwarding rule?	No
Pass	boolean	When the service node for forwarding is empty, should the rule be ignored?	No

RuleCondition

Field Name	Type	Description Information	Required
Type	string	Match condition type. Limited enumeration values: Host, Path	Yes
HostConfig	HostConfigSet	Domain-related configuration. Required when Type is Host. See HostConfigSet for specific structure.	No
PathConfig	PathConfigSet	Configuration related to the path. Required when Type is Path. For detailed structure, see PathConfigSet.	No

RuleAction

Field Name	Type	Description Information	Required
Type	string	Action Type. Limited enumeration value: Forward	Yes
ForwardConfig	ForwardConfigSet	Forward service node related configuration. See ForwardConfigSet for specific structure.	No

ForwardConfigSet

Field Name	Type	Description Information	Required
Targets	array[ForwardTargetSet]	The backend service nodes to be forwarded. It is limited to the service node pool of the listener; the array length can be 0. See ForwardTargetSet for detailed structure.	Yes

ForwardTargetSet

Field Name	Type	Description Information	Required
Id	string	Identification ID of the service node	Yes
Weight	int	Weight. Only valid when the load balancing algorithm of the listener is weighted round robin; Value range [1-100], default value is 1.	No

HostConfigSet

Field Name	Type	Description Information	Required
Values	array[string]	Value. Currently only supports an array length of 1; The value must meet the conditions of the relevant matching method.	Yes
MatchMode	string	Matching method. Limited enumeration values: Regular-Regular, Wildcard-Wildcard domain; Default value: Regular.	No

PathConfigSet

Field Name	Type	Description Information	Required
Values	array[string]	Value. Currently only supports an array length of 1; The value must meet the conditions of the relevant matching method.	Yes

Example

Request Example

https://api.ucloud-global.com/?Action=DescribeListeners
&Region=cn-bj2
&ProjectId=org-XXXXX
&ListenerId=als-XXXXX
&LoadBalancerId=alb-XXXXX
&Offset=0
&Limit=10

Response Example

{
  "Action": "DescribeListenersResponse",
  "Listeners": [
    {
      "Certificates": [
        {
          "IsDefault": true,
          "SSLId": "ssl-XXXXXX"
        }
      ],
      "CompressionEnabled": true,
      "HTTP2Enabled": false,
      "HealthCheckConfig": [
        {
          "Enabled": false
        }
      ],
      "IdleTimeout": 60,
      "ListenPort": 80,
      "ListenProtocol": "HTTP",
      "ListenerId": "als-XXXXXX",
      "Name": "als",
      "RedirectEnabled": false,
      "RedirectPort": 7,
      "Remark": "test_als",
      "Rules": [
        {
          "IsDefault": true,
          "Pass": true,
          "RuleActions": [
            {
              "ForwardConfig": {
                "Targets": [
                  {
                    "Id": "ars-XXXXX",
                    "Weight": 1
                  }
                ]
              },
              "Type": "Forward"
            }
          ],
          "RuleConditions": [
            {
              "PathConfig": {
                "Values": [
                  "/"
                ]
              },
              "Type": "Path"
            }
          ],
          "RuleId": "rule-XXXXXX"
        },
        {
          "IsDefault": false,
          "Pass": true,
          "RuleActions": [
            {
              "ForwardConfig": {
                "Targets": [
                  {
                    "Id": "ars-XXXXX",
                    "Weight": 1
                  }
                ]
              },
              "Type": "Forward"
            }
          ],
          "RuleConditions": [
            {
              "PathConfig": {
                "Values": [
                  "/abc"
                ]
              },
              "Type": "Path"
            },
            {
              "HostConfig": {
                "MatchMode": "Regular",
                "Values": [
                  "www.*.com"
                ]
              },
              "Type": "Host"
            }
          ],
          "RuleId": "rule-XXXXXX"
        }
      ],
      "Scheduler": "Roundrobin",
      "SecurityPolicyId": "security-tls12s",
      "StickinessConfig": [
        {
          "CookieName": "test",
          "Enabled": true,
          "Type": "UserDefined"
        }
      ],
      "Targets": [
        {
          "Enabled": true,
          "Id": "ars-XXXXX",
          "IsBackup": false,
          "Port": 80,
          "ResourceIP": "X.X.X.X",
          "ResourceId": "uhost-XXXXXX",
          "ResourceName": "UHost1",
          "ResourceType": "UHost",
          "State": "Unhealthy",
          "SubnetId": "subnet-XXXXX",
          "VPCId": "vnet-XXXXX",
          "Weight": 1
        }
      ]
    }
  ],
  "RetCode": 0,
  "TotalCount": 1
}

DescribeLoadBalancers DescribeRules