Amazon Elastic Load Balancing Construct Library

--- ![cfn-resources: Stable](/cdk/api/latest/img/cfn--resources-stable-success.svg?style=for-the-badge) ![cdk-constructs: Stable](/cdk/api/latest/img/cdk--constructs-stable-success.svg?style=for-the-badge) ---

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 without compilation. See https://github.com/aws/jsii/issues/826
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 without compilation. See https://github.com/aws/jsii/issues/826
lb.add_listener(
    external_port=80,
    allow_connections_from=[my_security_group]
)