AWS CDK - Lightsail LoadBalance

[marcotondi]

Hi everyone,

I'm currently working on an infrastructure using CDK and Amazon Lightsail as my main services.
However, I have a problem with the Load Balancer: in order to connect it to CloudFront, I need to know its DNSName.
However, it seems that this property is not accessible via CloudFormation and I couldn't find a direct way to get it.

I was wondering if any of you have been in a similar situation before and if you have any ideas or suggestions on how I could fix this. I'm also open to any workarounds or workarounds that might work.

Thanks in advance for your help!
Marco

[peterwoodworth]

Natively, it appears you're only able to fetch the ref and ARN unfortunately https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lightsail-loadbalancer.html#aws-resource-lightsail-loadbalancer-return-values

To work around this while still using lightsail, you will probably need to implement a custom resource that allows for API calls during deployment. We have a construct AwsCustomResource that makes it easy to make an arbitrary API call. You could use AwsCustomResource to make a getLoadBalancer call, and then reference the returned dnsName in your CloudFront resource.

It may be a bit tricky getting this setup properly if you've never used custom resources before, just let me know

[marcotondi]

Perfect thanks!

You gave me a path I didn't know.
I'll try and let you know 👍

[marcotondi]

Hi,
sorry for the silence. I have studied the documentation and for the moment I cannot continue with the tests as anticipated: the AwsCustomResource component creates a Lambda function, and in this environment I cannot create any.

Thanks a lot for your support.
Marco

[github-actions[bot]]

Hello! Reopening this discussion to make it searchable.