All Products
Search

This Product

    Server Load Balancer:UpdateServerGroupAttribute

    Document Center

    Server Load Balancer:UpdateServerGroupAttribute

    Last Updated:Mar 13, 2024

    Updates the configuration of a Network Load Balancer (NLB) server group.

    Debugging

    OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

    Authorization information

    The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

    • Operation: the value that you can use in the Action element to specify the operation on a resource.
    • Access level: the access level of each operation. The levels are read, write, and list.
    • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
      • The required resource types are displayed in bold characters.
      • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
    • Condition Key: the condition key that is defined by the cloud service.
    • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
    OperationAccess levelResource typeCondition keyAssociated operation
    nlb:UpdateServerGroupAttributeWrite
    • All Resources
      *
      none
    		none

    Request parameters

    ParameterTypeRequiredDescriptionExample
    ServerGroupIdstringYes

    The server group ID.

    		sgp-atstuj3rtoptyui****
    ServerGroupNamestringNo

    The new name of the server group.

    The name must be 2 to 128 characters in length, and can contain letters, digits, periods (.), underscores (_), and hyphens (-). The name must start with a letter.

    		NLB_ServerGroup1
    ConnectionDrainEnabledbooleanNo

    Specifies whether to enable connection draining. Valid values:

    • true
    • false
    		false
    ConnectionDrainTimeoutintegerNo

    The timeout period of connection draining. Unit: seconds. Valid values: 10 to 900.

    		10
    SchedulerstringNo

    The routing algorithm. Valid values:

    • Wrr: Backend servers with higher weights receive more requests than backend servers with lower weights.
    • rr: Requests are forwarded to backend servers in sequence.
    • sch: Source IP hashing is used. Requests from the same source IP address are forwarded to the same backend server.
    • tch: Four-element hashing is used. It specifies consistent hashing that is based on four factors: source IP address, destination IP address, source port, and destination port. Requests that contain the same information based on the four factors are forwarded to the same backend server.
    • qch: QUIC ID hashing. Requests that contain the same QUIC ID are forwarded to the same backend server.
    		Wrr
    PreserveClientIpEnabledbooleanNo

    Specifies whether to enable client IP preservation. Valid values:

    • true
    • false
    		false
    HealthCheckConfigobjectNo

    The configurations of the health check feature.

    HealthCheckEnabledbooleanNo

    Specifies whether to enable the health check feature. Valid values:

    • true
    • false
    		false
    HealthCheckTypestringNo

    The protocol that you want to use for health checks. Valid values: TCP and HTTP.

    		TCP
    HealthCheckConnectPortintegerNo

    The port that you want to use for health checks on backend servers. Valid values: 0 to 65535. If you set the value to 0, the ports of backend servers are used for health checks.

    		0
    HealthyThresholdintegerNo

    The number of times that an unhealthy backend server must consecutively pass health checks before it is declared healthy. In this case, the health status changes from fail to success. Valid values: 2 to 10.

    		3
    UnhealthyThresholdintegerNo

    The number of times that a healthy backend server must consecutively fail health checks before it is declared unhealthy. In this case, the health status changes from success to fail. Valid values: 2 to 10.

    		3
    HealthCheckConnectTimeoutintegerNo

    The maximum timeout period of a health check. Unit: seconds. Valid values: 1 to 300.

    		100
    HealthCheckIntervalintegerNo

    The interval at which health checks are performed. Unit: seconds.

    Valid values: 5 to 50.

    		5
    HealthCheckDomainstringNo

    The domain name that you want to use for health checks. Valid values:

    • $SERVER_IP: the private IP address of a backend server.
    • domain: a specified domain name. The domain name must be 1 to 80 characters in length, and can contain lowercase letters, digits, hyphens (-), and periods (.).
    Note This parameter takes effect only when HealthCheckType is set to HTTP.
    		$SERVER_IP
    HealthCheckUrlstringNo

    The path to which health check requests are sent.

    The path must be 1 to 80 characters in length, and can contain only letters, digits, and the following special characters: - / . % ? # & =. It can also contain the following extended characters: _ ; ~ ! ( ) * [ ] @ $ ^ : ' , +. The path must start with a forward slash (/).

    Note This parameter takes effect only when HealthCheckType is set to HTTP.
    		/test/index.html
    HealthCheckHttpCodearrayNo

    The HTTP status codes to return for health checks. Separate multiple HTTP status codes with commas (,). Valid values: http_2xx (default), http_3xx, http_4xx, and http_5xx.

    Note This parameter takes effect only when HealthCheckType is set to HTTP.
    stringNo

    The HTTP status codes to return for health checks. Separate multiple HTTP status codes with commas (,). Valid values: http_2xx (default), http_3xx, http_4xx, and http_5xx.

    Note This parameter takes effect only when HealthCheckType is set to HTTP.
    		http_2xx
    HttpCheckMethodstringNo

    The HTTP method that is used for health checks. Valid values: GET and HEAD.

    Note This parameter takes effect only when HealthCheckType is set to HTTP.
    		GET
    RegionIdstringNo

    The region ID of the NLB instance.

    You can call the DescribeRegions operation to obtain the region ID.

    		cn-hangzhou
    DryRunbooleanNo

    Specifies whether to perform a dry run, without performing the actual request. Valid values:

    • true: performs only a dry run. The system checks the request for potential issues, including missing parameter values, incorrect request syntax, and service limits. If the request fails the dry run, an error message is returned. If the request passes the dry run, the DryRunOperation error code is returned.
    • false (default): performs a dry run and performs the actual request. If the request passes the dry run, a 2xx HTTP status code is returned and the operation is performed.
    		false
    QuicVersionstringNo

    The Quic Version.

    Enumeration Value:
    • quic_10
    • quic_29
    		quic_10
    ClientTokenstringNo

    The client token that is used to ensure the idempotence of the request.

    You can use the client to generate the token, but you must make sure that the token is unique among different requests. The token can contain only ASCII characters.

    Note If you do not specify this parameter, the system automatically uses the request ID as the client token. The request ID may be different for each request.
    		123e4567-e89b-12d3-a456-426655440000

    Response parameters

    ParameterTypeDescriptionExample
    object

    Updates the configuration of a server group.

    RequestIdstring

    The request ID.

    		54B48E3D-DF70-471B-AA93-08E683A1B45
    ServerGroupIdstring

    The server group ID.

    		sgp-atstuj3rtoptyui****
    JobIdstring

    The ID of the asynchronous task.

    		72dcd26b-f12d-4c27-b3af-18f6aed5****

    Examples

    Sample success responses

    JSONformat

    {
  "RequestId": "54B48E3D-DF70-471B-AA93-08E683A1B45",
  "ServerGroupId": "sgp-atstuj3rtoptyui****",
  "JobId": "72dcd26b-f12d-4c27-b3af-18f6aed5****"
}

    Error codes

    For a list of error codes, visit the Service error codes.

    Change history

    Change timeSummary of changesOperation
    2023-12-28The Error code has changedsee changesets
    Change itemChange content
    Error CodesThe Error code has changed.
      Error Codes 400 change
      delete Error Codes: 403
      delete Error Codes: 404
    2023-12-18The Error code has changedsee changesets
    Change itemChange content
    Error CodesThe Error code has changed.
      Error Codes 400 change
      delete Error Codes: 404
      Added Error Codes: 403
    2023-10-09The Error code has changedsee changesets
    Change itemChange content
    Error CodesThe Error code has changed.
      Error Codes 400 change
      delete Error Codes: 404
    2023-10-07The Error code has changedsee changesets
    Change itemChange content
    Error CodesThe Error code has changed.
      Error Codes 400 change
      delete Error Codes: 404
    2023-09-27The Error code has changed. The request parameters of the API has changedsee changesets
    Change itemChange content
    Error CodesThe Error code has changed.
      delete Error Codes: 400
      delete Error Codes: 404
    Input ParametersThe request parameters of the API has changed.
      delete Input Parameters: QuicVersion
    2023-09-26The Error code has changedsee changesets
    Change itemChange content
    Error CodesThe Error code has changed.
      Added Error Codes: 400
      Added Error Codes: 404
    2023-09-18The request parameters of the API has changedsee changesets
    Change itemChange content
    Input ParametersThe request parameters of the API has changed.
      Added Input Parameters: QuicVersion