Scale up ElasticBeanStalk environment programmatically

Question

How to add more instances (scale up) ElasticBeanStalk environment programmatically within a running application (Spring Boot) ?

I thought of using AWSElasticBeanstalkClient, but couldn't find any method to add instances using the client.

http://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/elasticbeanstalk/AWSElasticBeanstalkClient.html

Any hints?

I need this because the design of my applications is that each App node needs to communicate with each other to perform some image-recognition tasks.

If this is not possible with EBS, I was thinking of creating EC2 programmatically as mentioned below, my problem is how to deploy my application to newly created EC2 instance.

http://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/run-instance.html

Answer 1

Cloudwatch alarms + AutoScaling is the AWS Reference architecture for scaling your ElasticBeanstalk applications.

https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features.managing.as.html

You can have each app node publish custom cloudwatch metrics and scale your ASG based on that.

https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/publishingMetrics.html