Function

This API is used to add a listener to a load balancer.

URI

POST /v1.0/{project_id}/elbaas/listeners

**Table 1** Parameter description
Parameter	Mandatory	Type	Description
project_id	Yes	String	Specifies the project ID.
name	Yes	String	Specifies the listener name. The value can contain 1 to 64 characters that consist of letters, digits, underscores (_), and hyphens (-).
description	No	String	Provides supplementary information about the listener. The value contains 0 to 128 characters and cannot contain angle brackets (< and >).
loadbalancer_id	Yes	String	Specifies the load balancer ID.
protocol	Yes	String	Specifies the protocol used by the listener. The value can be HTTP, TCP, HTTPS, SSL, or UDP. A UDP listener cannot be added to a private network load balancer.
port	Yes	Integer	Specifies the port used by the listener. The port number ranges from 1 to 65535.
backend_protocol	Yes	String	Specifies the backend ECS protocol. If protocol is set to UDP, the value of this parameter can only be UDP. If protocol is set to SSL, the value of this parameter can only be TCP. The value can be HTTP, TCP, or UDP.
backend_port	Yes	Integer	Specifies the port used by backend ECSs. The port number ranges from 1 to 65535.
lb_algorithm	Yes	String	Specifies the load balancing algorithm. The value can be roundrobin, leastconn, or source.
session_sticky	No	Boolean	Specifies whether to enable the sticky session feature. The value can be true or false. The feature is enabled when the value is true. If protocol is set to SSL, the sticky session feature is not supported and the parameter is invalid. If protocol is set to HTTP, HTTPS, or TCP and lb_algorithm is not roundrobin, the value of this parameter can only be false.
sticky_session_type	No	String	Specifies where the cookie is from. The only value is insert, indicating that the cookie is inserted by the load balancer. This parameter takes effect when protocol is set to HTTP and session_sticky to true. This parameter does not take effect when protocol is set to TCP, SSL, or UDP, which means that the parameter is unavailable or its value is set to null.
cookie_timeout	No	Integer	Specifies the cookie timeout duration. This parameter is valid when protocol is set to HTTP, session_sticky to true, and sticky_session_type to insert. This parameter is invalid when protocol is set to TCP, SSL, or UDP. The value ranges from 1 to 1440.
tcp_timeout	No	Integer	Specifies the TCP session timeout duration. This parameter is valid when protocol is set to TCP. The value ranges from 1 to 1440.
tcp_draining	No	Boolean	Specifies whether to maintain TCP connections to a backend ECS that has been removed. This parameter is valid when protocol is set to TCP. The value can be true or false.
tcp_draining_timeout	No	Integer	Specifies the timeout duration for maintaining TCP connections to a backend ECS that has been removed in the unit of minute. This parameter is valid when protocol is set to TCP and tcp_draining to true. The value ranges from 0 to 60.
certificate_id	No	String	Specifies the certificate ID. This parameter is mandatory when protocol is set to HTTPS or SSL. The ID can be obtained from the certificate list.
certificates	No	String	Lists the certificate IDs if protocol is set to HTTPS. This parameter is mandatory in the SNI scenario and is valid only when the load balancer is a public network load balancer.
udp_timeout	No	Integer	Specifies the UDP session timeout duration. This parameter is valid when protocol is set to UDP. The value ranges from 1 to 1440.
ssl_protocols	No	String	Specifies the supported SSL/TLS protocol version. This parameter is available only when protocol is set to HTTPS or SSL. The value can be TLS 1.2 or TLS 1.2 TLS 1.1 TLS 1.0, and the default value is TLS 1.2.
ssl_ciphers	No	String	Specifies the cipher suites supported by a specific SSL/TLS protocol version. This parameter is available only when protocol is set to HTTPS or SSL. The value is Default, Extended, or Strict. The value of Default is ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256. The value of Extended is ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:AES128-SHA256:AES256-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:AES128-SHA:AES256-SHA:DHE-DSS-AES128-SHA:CAMELLIA128-SHA:EDH-RSA-DES-CBC3-SHA:DES-CBC3-SHA:ECDHE-RSA-RC4-SHA:RC4-SHA:DHE-RSA-AES256-SHA:DHE-DSS-AES256-SHA:DHE-RSA-CAMELLIA256-SHA:DHE-DSS-CAMELLIA256-SHA:CAMELLIA256-SHA:EDH-DSS-DES-CBC3-SHA:DHE-RSA-CAMELLIA128-SHA:DHE-DSS-CAMELLIA128-SHA. The value of Strict is ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256. The default value is Default. When ssl_protocols is set to TLS 1.2 TLS 1.1 TLS 1.0, this parameter can only be set to Extended.

Request

Request parameters
None

Example request

{
    "name": "listener1",
    "description": "",
    "loadbalancer_id": "0b07acf06d243925bc24a0ac7445267a",
    "protocol": "HTTP",
    "port": 88,
    "backend_protocol": "HTTP",
    "backend_port": 80,
    "lb_algorithm": "roundrobin",
    "session_sticky": true,
    "sticky_session_type": "insert",
    "cookie_timeout": 100,
    "tcp_draining": true,
    "tcp_draining_timeout": 5
}

Response

Response parameters

**Table 2** Parameter description
Parameter	Type	Description
update_time	String	Specifies the time when the listener was updated.
backend_port	Integer	Specifies the port used by backend ECSs.
id	String	Specifies the listener ID.
backend_protocol	String	Specifies the protocol used by backend ECSs.
sticky_session_type	String	Specifies where the cookie is from. The only value is insert, indicating that the cookie is inserted by the load balancer. This parameter is valid when protocol is set to HTTP and session_sticky to true.
description	String	Provides supplementary information about the listener.
loadbalancer_id	String	Specifies the load balancer ID.
create_time	String	Specifies the time when the listener was created.
status	String	Specifies the listener status. The value can be ACTIVE, PENDING_CREATE, or ERROR.
protocol	String	Specifies the protocol used for load balancing at Layer 4 or Layer 7.
port	Integer	Specifies the port used by the listener.
cookie_timeout	Integer	Specifies the cookie timeout duration in the unit of minute. This parameter is valid when session_sticky is set to true and sticky_session_type to insert. The value ranges from 1 to 1440.
admin_state_up	Boolean	Specifies the administrative status of the load balancer. Two options are available: false: The load balancer is disabled. true: The load balancer is running properly.
session_sticky	Boolean	Specifies whether to enable the sticky session feature. The feature is enabled when the value is true.
lb_algorithm	String	Specifies the load balancing algorithm.
name	String	Specifies the listener name.
tcp_draining	Boolean	Specifies whether to maintain TCP connections to a backend ECS that has been removed. This parameter is valid when protocol is set to TCP. The value can be true or false.
tcp_draining_timeout	Integer	Specifies the timeout duration for maintaining TCP connections to a backend ECS that has been removed in the unit of minute. This parameter is valid when protocol is set to TCP and tcp_draining to true. The value ranges from 0 to 60.
ssl_protocols	String	Specifies the supported SSL/TLS protocol version. This parameter is available only when protocol is set to HTTPS or SSL.
ssl_ciphers	String	Specifies the cipher suite of an encryption protocol. This parameter is available only when protocol is set to HTTPS or SSL.
certificate_id	String	Specifies the default certificate ID. This parameter is available only when protocol is set to HTTPS or SSL.
certificates	String	Lists the certificate IDs if protocol is set to HTTPS. This parameter is mandatory in the SNI scenario.

Example response

{
    "update_time": "2015-09-15 07:41:17",
    "backend_port": 80,
    "tcp_draining": true,
    "id": "248425d7b97dc26920eb23720115e068",
    "backend_protocol": "HTTP",
    "sticky_session_type": "insert",
    "description": "",
    "loadbalancer_id": "0b07acf06d243925bc24a0ac7445267a",
    "create_time": "2015-09-15 07:41:17",
    "status": "ACTIVE",
    "protocol": "TCP",
    "port": 88,
    "cookie_timeout": 100,
    "admin_state_up": true,
    "session_sticky": true,
    "lb_algorithm": "roundrobin",
    "name": "listener1",
    "tcp_draining": true,
    "tcp_draining_timeout": 5
}

Status Code

Normal
200

Error

Status Code	Message	Description
400	badRequest	Request error.
401	unauthorized	Authentication failed.
403	userDisabled	You do not have the permission to perform the operation.
404	Not Found	The requested page does not exist.
500	authFault	System error.
503	serviceUnavailable	The service is unavailable.

Adding a Listener

Function

URI

Request

Response

Status Code