aws-practice

A quick Spring Boot application deploy practice with a PostgreSQL connection using AWS services like Elastick Beanstalk and RDS.

Infos about the folders

/aws-test Is a simple Spring Boot application with two endpoints
/aws-test-dev Have all files to do local test
/aws-test-prod Have all files to structure the deploy

Doing all stuffs

Let's do all the steps to do a local test and deploy the application on AWS.

Local build

First of all, let's compile de Spring Boot application. Make sure that there's a local PostgreSQL server instance to the application to do connection and have a successful build.

cd aws-test
mvn clean package

Docker config dev test

So, switch to the /aws-test-dev folder and let's run a local application with docker environment.

cd aws-test-dev
sh ./build.sh
docker-compose up

Access http://localhost and see the follow message: Hello, baby!

Docker config prod test

Switch to the /aws-test-prod and let's build the production image. We will push this image to the Dockerhub. Because, the EB instance will be configured with a Docker environment.

Pay attention to the Dockerrun.aws.json. The file will be uploaded to the EB instance. It had a config to the EB instance recognize our Dockerhub image.

cd /aws-test-prod
sh ./build.sh

RDS and EB config

Okay, we finished the project config steps. Now, we need to create the RDS and EB instances and config them.

RDS

Create a database
Use the Standard Create
Select the PostgreSQL
Select the Free tier template
Define your credentials
In Additional connectivity configuration, make sure to select Yes for the Publicly accessible. So, later, we will can have a connection with a PostgreSQL client and manipulate the RDS instance.
Create a database called awstest on Additional configuration
So, click on Create database and wait... (This operation may take a long time)
After the creation, edit the Security group inbound to accept all connections.
Use a PostgreSQL client to connect with the instance and create a table called usuario with the follow simple schema:

create table usuario (
    id integer,
    nome varchar,
    primary key(id)
)

Run the follow SQL to popule the table

insert into usuario(id, nome) values (1, 'Natan');
insert into usuario(id, nome) values (2, 'Jonas');

EB

Create environment
Select the Web server environment
Define the Environment informations
Choose Docker as platform
Upload the Dockerrun.aws.json file
Wait the creation
Go to configuration -> software -> click on Modify
Set the follow environment properties (key | value):

SPRING_DATASOURCE_URL | jdbc:postgresql://<your-rds-host>:5432/awstest
SPRING_DATASOURCE_USERNAME | <your-rds-user>
SPRING_DATASOURCE_PASSWORD | <your-rds-password>

Apply the config and wait the instance restart

In the end, access your EB instance link and see the message: Hello, baby!

In additional, access the /usuarios to see the inserted users.

natansevero/aws-practice