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Spring Boot to AWS Elastic Beanstalk

Beanstalk is an AWS-managed service that allows applications to run containerized in AWS. I am using Elastic Beanstalk (EB) to deploy quickly developed applications when the emphasis is on time-to-market rather than all the features of an enterprise application.

For the purpose of this post, I will use the application called Genova as an example. It is a web application that exposes HTML and JSON content.

Step 1 - Create a Spring Profile for AWS Beanstalk

The configuration of Spring Boot application is applications-<profile>.yml files that are in the src/main/resources folder.

By default, an EB deployment listens to the port 5000. For this reason I am creating the file application-eb.yaml with the following content:

server:
 port: 5000

Step2 - Build the Spring Boot Application

Using maven to create the Spring Boot jar file:

mvn clean package -DskipTests

This command creates a file with the name genova-1.0.0-SNAPSHOT.jar  in the target folder.

Step 3 - Create the Elastic Beanstalk Application and Environment in AWS

Log in to the AWS console, select AWS Elastic Beanstalk, and start the wizard to create a new application.

Then, create a new Environment for this application. I am choosing the Java platform:




Other parameters:

  • Single instance
  • Loading from a local file
  • Root volume type - General Purpose 3 (SSD)
  • IMDSv1 - Deactivated

Environment variables:

  • Important: add the aws-eb profile, this will set the server port

Step 4 - Create the DNS Entry for the EB Deployment

Go to AWS Route 53, select the zone, add an A record pointing to the EB-generated endpoint:

Step 5 - Run the Application

The application is now deployed, running in AWS EB:

Step 6 - Pause the Environment

To save money, this environment configuration can be saved and quickly re-created later.

Select the environment, then select Actions -> Save Configuration.

Select the environment, then select Actions -> Terminate Environment.

Appendix

Notes:

  • The application is now running on port 80, unsecured
  • The deployment is running on a single instance
  • These can be addressed by creating a load-balanced EB environment with multiple instances running in separate availability zones.


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