Domain name for API request: clb.intl.tencentcloudapi.com.
This API is used to modify the attributes of a CLB instance listener, including the listener name, health check parameters, certificate information, and forwarding policy. This API does not support classic CLB instances.
This is an asynchronous API. After it returns the result successfully, you can call the DescribeTaskStatus API with the returned RequestId as an input parameter to query whether the task is successful.
A maximum of 20 requests can be initiated per second for this API.
The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.
| Parameter Name | Required | Type | Description |
|---|---|---|---|
| Action | Yes | String | Common Params. The value used for this API: ModifyListener. |
| Version | Yes | String | Common Params. The value used for this API: 2018-03-17. |
| Region | Yes | String | Common Params. For more information, please see the list of regions supported by the product. |
| LoadBalancerId | Yes | String | ID of the CLB instance. You can call the DescribeLoadBalancers API to query the ID. |
| ListenerId | Yes | String | ID of the CLB instance listener. You can call the DescribeListeners API to query the ID. |
| ListenerName | No | String | New listener name. The maximum length is 255 characters. |
| SessionExpireTime | No | Integer | Session persistence time in seconds. Value range: 30-3,600. The default value is 0, indicating that session persistence is not enabled. This parameter is applicable only to TCP/UDP listeners. |
| HealthCheck | No | HealthCheck | Health check parameter. It is only applicable only to TCP, UDP, TCP_SSL and QUIC listeners. |
| Certificate | No | CertificateInput | Certificate information. This parameter is only applicable to HTTPS/TCP_SSL/QUIC listeners. Certificate and MultiCertInfo cannot be both specified. |
| Scheduler | No | String | Listener forwarding method. Valid values: WRR (weighted round-robin), LEAST_CONN (least connections), and IP_HASH (IP address hash). They indicate weighted round-robin and least connections, respectively. Default value: WRR. Use cases: This applies to TCP/UDP/TCP_SSL/QUIC listeners. The balancing method for Layer-7 listeners should be modified in the forwarding rules. |
| SniSwitch | No | Integer | Whether to enable the SNI feature. This parameter applies only to HTTPS listeners. The default value is 0, indicating disabled, and 1 indicates enabled. Note: The SNI feature can be enabled for listeners that have not enabled SNI, but cannot be disabled for listeners that have enabled SNI. |
| TargetType | No | String | Target backend type. NODE: A single node; TARGETGROUP: A target group. |
| KeepaliveEnable | No | Integer | Whether to enable the persistent connection feature. This parameter applies only to HTTP/HTTPS listeners. The default value is 0, indicating disabled, and 1 indicates enabled. Enable this feature with caution if the maximum number of connections is limited for real servers. This feature is in beta testing. To use it, submit a beta testing application. |
| DeregisterTargetRst | No | Boolean | Reschedules when unbinding real servers. only supported for TCP/UDP listeners. toggle on to enable this feature. |
| SessionType | No | String | Session persistence type. NORMAL: default session persistence type; QUIC_CID: perform session persistence based on QUIC connection ID. If the value is set to QUIC_CID, only the UDP protocol is supported. Use cases: This applies to TCP/UDP/TCP_SSL/QUIC listeners. Default value: NORMAL. |
| MultiCertInfo | No | MultiCertInfo | Certificate information. You can specify multiple server-side certificates with different algorithm types. This parameter is only applicable to HTTPS listeners with the SNI feature not enabled. Certificate and MultiCertInfo cannot be specified at the same time. |
| MaxConn | No | Integer | Maximum number of concurrent connections at the listener level. This parameter is supported only for LCU-supported instances with TCP/UDP/TCP_SSL/QUIC listeners currently. Value range: 1 to the maximum number of concurrent connections for the instance specification. -1 indicates that no limit is set on the concurrent connections at the listener level. Classic network instances do not support this parameter. Default value: -1, which indicates no limit. |
| MaxCps | No | Integer | Maximum number of new connections at the listener level. This parameter is supported only for LCU-supported instances with TCP/UDP/TCP_SSL/QUIC listeners currently. Value range: 1 to the maximum number of new connections for the instance specification. -1 indicates that no limit is set on the new connections at the listener level. Classic network instances do not support this parameter. Default value: -1, which indicates no limit. |
| IdleConnectTimeout | No | Integer | Specifies the idle connection timeout in seconds. this parameter applies only to TCP/UDP listeners. default value: 900 for TCP listeners and 300 for UDP listeners. value range: 10–900 for shared instances and dedicated instances and 10–1980 for lcu-supported instances. to set a value exceeding 1980, submit a ticket application. the maximum settable value is 3600. |
| ProxyProtocol | No | Boolean | Specifies whether PP is supported for TCP_SSL and QUIC. |
| SnatEnable | No | Boolean | Whether SNAT (source IP replacement) is enabled. valid values: True (enabled), False (disabled). disabled by default. note: when SnatEnable is enabled, the client source IP will be replaced, at this point the pass through client source IP option is disabled, and vice versa. |
| DataCompressMode | No | String | Data compression mode. |
| RescheduleTargetZeroWeight | No | Boolean | Reschedules when setting backend server weight to 0. only supported for TCP/UDP listeners. toggle on to enable this feature. |
| RescheduleUnhealthy | No | Boolean | Reschedules when health check exceptions occur on real servers. only supported for TCP/UDP listeners. toggle on to enable this feature. |
| RescheduleExpandTarget | No | Boolean | Reschedules when adding or removing backend servers. only supported for TCP/UDP listeners. toggle on to enable this feature. |
| RescheduleStartTime | No | Integer | Specifies the trigger start time for rescheduling. value range: 0-3600s. supported only by TCP/UDP listeners. |
| RescheduleInterval | No | Integer | Rescheduling trigger duration. valid values: 0-3600s. only TCP/UDP listeners support this. |
| Parameter Name | Type | Description |
|---|---|---|
| RequestId | String | The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem. |
This example shows you how to modify the certificate bound to an HTTPS listener.
POST / HTTP/1.1
Host: clb.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: ModifyListener
<Common request parameters>
{
"ListenerId": "lbl-4fbxq45k",
"Certificate": {
"SSLMode": "UNIDIRECTIONAL",
"CertId": "Nb1DY3hQ"
},
"LoadBalancerId": "lb-cuxw2rm0"
}{
"Response": {
"RequestId": "b64574f9-5bc7-4a63-a9d7-3671b6a6d62b"
}
}
This example shows you how to modify the name, health check parameters, and forwarding policy of a TCP listener.
POST / HTTP/1.1
Host: clb.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: ModifyListener
<Common request parameters>
{
"HealthCheck": {
"UnHealthNum": 5,
"HealthNum": 5,
"IntervalTime": 60,
"TimeOut": 35,
"HealthSwitch": 1
},
"LoadBalancerId": "lb-cuxw2rm0",
"ListenerId": "lbl-d1ubsydq",
"ListenerName": "newlis",
"Scheduler": "LEAST_CONN",
"SessionExpireTime": 120
}{
"Response": {
"RequestId": "8cd88c83-fd30-47c0-8e7a-89bf13a7a83c"
}
}
POST / HTTP/1.1
Host: clb.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: ModifyListener
<Common request parameters>
{
"LoadBalancerId": "lb-fd9kpk4s",
"ListenerId": "lbl-1sf4yxie",
"RescheduleTargetZeroWeight": false,
"RescheduleUnhealthy": false,
"RescheduleExpandTarget": false,
"RescheduleStartTime": 0,
"RescheduleInterval": 0
}{
"Response": {
"RequestId": "e5854a85-faee-485e-8892-0a7cbca45080"
}
}
TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.
The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.
| Error Code | Description |
|---|---|
| FailedOperation | Operation failed. |
| FailedOperation.ResourceInOperating | The specified resource is currently being operated. Please try again later. |
| InternalError | Internal error. |
| InvalidParameter | Parameter error. |
| InvalidParameter.FormatError | Wrong parameter format. |
| InvalidParameterValue | Incorrect parameter value. |
| InvalidParameterValue.Length | Wrong parameter length. |
| MissingParameter | Missing parameter. |
| UnauthorizedOperation | Unauthorized operation. |
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