@aws-cdk/aws-elasticloadbalancing

Amazon Elastic Load Balancing Construct Library

This is a developer preview (public beta) module. Releases might lack important features and might have future breaking changes.

The @aws-cdk/aws-ec2 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.

const lb = new elb.LoadBalancer(this, 'LB', {
    vpc,
    internetFacing: true,
    healthCheck: {
        port: 80
    },
});

lb.addTarget(myAutoScalingGroup);
lb.addListener({
    externalPort: 80,
});

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

lb.addListener({
    externalPort: 80,
    allowConnectionsFrom: [mySecurityGroup]
});

Changelog

0.37.0 (2019-07-04)

Bug Fixes

• core: fix some return types (#3192) (b5997c3)
• ecs: grant drain-hook policy container-instance permissions (#3199) (7796cd7), closes #3190
• sns: allow tokens to be used in UrlSubscription (#2938) (5ce4141)
• ssm: correctly deduplicate parameter names (#3183) (47bf435), closes #3076
• stepfunctions: Downscope SageMaker permissions (#2991) (69c82c8)

BREAKING CHANGES TO EXPERIMENTAL FEATURES

• core: construct.findChild() now only looks up direct children
• ec2: Port.toRuleJSON was renamed to toRuleJson
• codebuild: PipelineProject.addSecondaryArtifact now returns void (formerly any)
• codebuild: Project.addSecondaryArtifact now returns void (formerly any)