How to use same application loadbalancer for different elasticbeanstack application environment using cloudformation template?

Question

I am running an application with different services. I have deployed it as a microservice pattern using elastic beanstalk. Each microservice is hosted in a separate elastic beanstalk environment but within the same application.

I have automated the deployment process with cloud formation template. I have created a resource for each application environment through the template. It is created. Beanstalk environment uses default target group and separate application load balancer for each environment, If I add more number of microservices to my application, which requires more number of the application load balancer, But a single application load balancer can be used to route the traffic of the different microservice target groups.

I have checked about the parameters available in the resource. The main option is available in beanstalk environment resource is a single instance or load-balanced environment. If I choose single instance, then it will not create any load balancer. It just creates a single EC2 server and deploys the application. Apache/Nginx acts as a reverse proxy server to access the endpoint. At the same time, if I use a load balanced environment, I can configure settings related to the application load balancer. But I do not find any way to reuse a single Application load balancer, Do we have such support in AWS right now, AWS has added some options to control ELB from elastic beanstalk.

Answer 1

You can extend the Single Application Load Balancer capabilities to rules, targets, and target groups. Where let's Say your Environment 1 has an application name APPLICATION-1 and Environment 2 has an application name APPLICATION-2 . using ALB through target groups you can define such rules.

Reference Link

Answer 2

Unfortunately, it is presently not possible to associate a single Load Balancer with multiple Beanstalk environments. The closest you can get to deploying separate services under a single Load Balancer using Beanstalk is to use the Multi-Container Docker platform. However, under this scheme, your services cannot be scaled independently. ie either Beanstalk scales all services together, or none of them.