ElasticLoadBalancing / Client / modify_load_balancer_attributes

modify_load_balancer_attributes#

ElasticLoadBalancing.Client.modify_load_balancer_attributes(**kwargs)#

Modifies the attributes of the specified load balancer.

You can modify the load balancer attributes, such as AccessLogs, ConnectionDraining, and CrossZoneLoadBalancing by either enabling or disabling them. Or, you can modify the load balancer attribute ConnectionSettings by specifying an idle connection timeout value for your load balancer.

For more information, see the following in the Classic Load Balancers Guide:

Request Syntax

response = client.modify_load_balancer_attributes(
    LoadBalancerName='string',
    LoadBalancerAttributes={
        'CrossZoneLoadBalancing': {
            'Enabled': True|False
        },
        'AccessLog': {
            'Enabled': True|False,
            'S3BucketName': 'string',
            'EmitInterval': 123,
            'S3BucketPrefix': 'string'
        },
        'ConnectionDraining': {
            'Enabled': True|False,
            'Timeout': 123
        },
        'ConnectionSettings': {
            'IdleTimeout': 123
        },
        'AdditionalAttributes': [
            {
                'Key': 'string',
                'Value': 'string'
            },
        ]
    }
)

Parameters:

LoadBalancerName (string) –
[REQUIRED]

The name of the load balancer.
LoadBalancerAttributes (dict) –
[REQUIRED]

The attributes for the load balancer.
- CrossZoneLoadBalancing (dict) –
  
  If enabled, the load balancer routes the request traffic evenly across all instances regardless of the Availability Zones.
  
  For more information, see Configure Cross-Zone Load Balancing in the Classic Load Balancers Guide.
  - Enabled (boolean) – [REQUIRED]
    
    Specifies whether cross-zone load balancing is enabled for the load balancer.
- AccessLog (dict) –
  
  If enabled, the load balancer captures detailed information of all requests and delivers the information to the Amazon S3 bucket that you specify.
  
  For more information, see Enable Access Logs in the Classic Load Balancers Guide.
  - Enabled (boolean) – [REQUIRED]
    
    Specifies whether access logs are enabled for the load balancer.
  - S3BucketName (string) –
    
    The name of the Amazon S3 bucket where the access logs are stored.
  - EmitInterval (integer) –
    
    The interval for publishing the access logs. You can specify an interval of either 5 minutes or 60 minutes.
    
    Default: 60 minutes
  - S3BucketPrefix (string) –
    
    The logical hierarchy you created for your Amazon S3 bucket, for example my-bucket-prefix/prod. If the prefix is not provided, the log is placed at the root level of the bucket.
- ConnectionDraining (dict) –
  
  If enabled, the load balancer allows existing requests to complete before the load balancer shifts traffic away from a deregistered or unhealthy instance.
  
  For more information, see Configure Connection Draining in the Classic Load Balancers Guide.
  - Enabled (boolean) – [REQUIRED]
    
    Specifies whether connection draining is enabled for the load balancer.
  - Timeout (integer) –
    
    The maximum time, in seconds, to keep the existing connections open before deregistering the instances.
- ConnectionSettings (dict) –
  
  If enabled, the load balancer allows the connections to remain idle (no data is sent over the connection) for the specified duration.
  
  By default, Elastic Load Balancing maintains a 60-second idle connection timeout for both front-end and back-end connections of your load balancer. For more information, see Configure Idle Connection Timeout in the Classic Load Balancers Guide.
  - IdleTimeout (integer) – [REQUIRED]
    
    The time, in seconds, that the connection is allowed to be idle (no data has been sent over the connection) before it is closed by the load balancer.
- AdditionalAttributes (list) –
  
  Any additional attributes.
  - (dict) –
    
    Information about additional load balancer attributes.
    - Key (string) –
      
      The name of the attribute.
      
      The following attribute is supported.
      - elb.http.desyncmitigationmode - Determines how the load balancer handles requests that might pose a security risk to your application. The possible values are monitor, defensive, and strictest. The default is defensive.
    - Value (string) –
      
      This value of the attribute.

Return type:

dict

Returns:

Response Syntax

{
    'LoadBalancerName': 'string',
    'LoadBalancerAttributes': {
        'CrossZoneLoadBalancing': {
            'Enabled': True|False
        },
        'AccessLog': {
            'Enabled': True|False,
            'S3BucketName': 'string',
            'EmitInterval': 123,
            'S3BucketPrefix': 'string'
        },
        'ConnectionDraining': {
            'Enabled': True|False,
            'Timeout': 123
        },
        'ConnectionSettings': {
            'IdleTimeout': 123
        },
        'AdditionalAttributes': [
            {
                'Key': 'string',
                'Value': 'string'
            },
        ]
    }
}

Response Structure

(dict) –

Contains the output of ModifyLoadBalancerAttributes.
- LoadBalancerName (string) –
  
  The name of the load balancer.
- LoadBalancerAttributes (dict) –
  
  Information about the load balancer attributes.
  - CrossZoneLoadBalancing (dict) –
    
    If enabled, the load balancer routes the request traffic evenly across all instances regardless of the Availability Zones.
    
    For more information, see Configure Cross-Zone Load Balancing in the Classic Load Balancers Guide.
    - Enabled (boolean) –
      
      Specifies whether cross-zone load balancing is enabled for the load balancer.
  - AccessLog (dict) –
    
    If enabled, the load balancer captures detailed information of all requests and delivers the information to the Amazon S3 bucket that you specify.
    
    For more information, see Enable Access Logs in the Classic Load Balancers Guide.
    - Enabled (boolean) –
      
      Specifies whether access logs are enabled for the load balancer.
    - S3BucketName (string) –
      
      The name of the Amazon S3 bucket where the access logs are stored.
    - EmitInterval (integer) –
      
      The interval for publishing the access logs. You can specify an interval of either 5 minutes or 60 minutes.
      
      Default: 60 minutes
    - S3BucketPrefix (string) –
      
      The logical hierarchy you created for your Amazon S3 bucket, for example my-bucket-prefix/prod. If the prefix is not provided, the log is placed at the root level of the bucket.
  - ConnectionDraining (dict) –
    
    If enabled, the load balancer allows existing requests to complete before the load balancer shifts traffic away from a deregistered or unhealthy instance.
    
    For more information, see Configure Connection Draining in the Classic Load Balancers Guide.
    - Enabled (boolean) –
      
      Specifies whether connection draining is enabled for the load balancer.
    - Timeout (integer) –
      
      The maximum time, in seconds, to keep the existing connections open before deregistering the instances.
  - ConnectionSettings (dict) –
    
    If enabled, the load balancer allows the connections to remain idle (no data is sent over the connection) for the specified duration.
    
    By default, Elastic Load Balancing maintains a 60-second idle connection timeout for both front-end and back-end connections of your load balancer. For more information, see Configure Idle Connection Timeout in the Classic Load Balancers Guide.
    - IdleTimeout (integer) –
      
      The time, in seconds, that the connection is allowed to be idle (no data has been sent over the connection) before it is closed by the load balancer.
  - AdditionalAttributes (list) –
    
    Any additional attributes.
    - (dict) –
      
      Information about additional load balancer attributes.
      - Key (string) –
        
        The name of the attribute.
        
        The following attribute is supported.
        
        elb.http.desyncmitigationmode - Determines how the load balancer handles requests that might pose a security risk to your application. The possible values are monitor, defensive, and strictest. The default is defensive.
      - Value (string) –
        
        This value of the attribute.

Exceptions

Examples

This example enables cross-zone load balancing for the specified load balancer.

response = client.modify_load_balancer_attributes(
    LoadBalancerAttributes={
        'CrossZoneLoadBalancing': {
            'Enabled': True,
        },
    },
    LoadBalancerName='my-load-balancer',
)

print(response)

Expected Output:

{
    'LoadBalancerAttributes': {
        'CrossZoneLoadBalancing': {
            'Enabled': True,
        },
    },
    'LoadBalancerName': 'my-load-balancer',
    'ResponseMetadata': {
        '...': '...',
    },
}

This example enables connection draining for the specified load balancer.

response = client.modify_load_balancer_attributes(
    LoadBalancerAttributes={
        'ConnectionDraining': {
            'Enabled': True,
            'Timeout': 300,
        },
    },
    LoadBalancerName='my-load-balancer',
)

print(response)

Expected Output:

{
    'LoadBalancerAttributes': {
        'ConnectionDraining': {
            'Enabled': True,
            'Timeout': 300,
        },
    },
    'LoadBalancerName': 'my-load-balancer',
    'ResponseMetadata': {
        '...': '...',
    },
}