aws-cdk.aws-elasticloadbalancing 1.138.0

The CDK Construct Library for AWS::ElasticLoadBalancing

Amazon Elastic Load Balancing Construct Library

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The @aws-cdk/aws-elasticloadbalancing package provides constructs for configuring classic load balancers.

Configuring a Load Balancer

Load balancers send traffic to one or more AutoScalingGroups. Create a load balancer, set up listeners and a health check, and supply the fleet(s) you want to load balance to in the targets property.

# Example automatically generated from non-compiling source. May contain errors.
lb = elb.LoadBalancer(self, "LB",
    vpc=vpc,
    internet_facing=True,
    health_check={
        "port": 80
    }
)

lb.add_target(my_auto_scaling_group)
lb.add_listener(
    external_port=80
)

The load balancer allows all connections by default. If you want to change that, pass the allowConnectionsFrom property while setting up the listener:

# Example automatically generated from non-compiling source. May contain errors.
lb.add_listener(
    external_port=80,
    allow_connections_from=[my_security_group]
)