[AWS] Using AWS Elastic Beanstalk

Elastic Beanstalk is a powerful Development Operations tool (Dev Ops) to deploy your code to AWS services and infrastructure with minimal effort.

EB CLI

We'll be using the Command Line Interface to work with Elastic Beanstalk. This will provide us with a set of commands to create new applications and deploy code to these systems. Before continuing, you must install the EB CLI by reading the AWS Doc Instructions for Install for your platform.

Run:

eb --version
eb init

After running the eb init command and following the guided setup will create a new directory in our project named .elasticbeanstalk. Within this configuration file, there is a configuration file named config.yml. This is the set of instructions Elastic Beanstalk will follow when provisioning your AWS infrastructure and deploying your code.

config.yml:

Add following code to the file:

branch-defaults:
  default:
    ...
deploy:
  artifact: ./www/Archive.zip
global:

 ElasticBeanstalk only interests in source code, put all the code into zip with package.json.

You can also upload zip using mangement console.

Creating Deployable Build Archives and Deploying

Now that you have a running Beanstalk instance, we must package our code into a format that is usable by Elastic Beanstalk. We do this by transpiring our typescript into javascript and then zipping the contents into a single file which we can upload. NPM allows us to define simple script commands in the package.json file. As described in the video, we've included the build command to perform these steps for us.

"clean": "rimraf www/ || true",
"build": "npm run clean && tsc && cp -rf src/config www/config && cp .npmrc www/.npmrc && cp package.json www/package.json && cd www && zip -r Archive.zip . && cd ..",

Run:

npm run build

It creates `/www` folder and `Archive.zip`.

Deploy to AWS

Runing:

eb create

Choose:

Environment Name,
DNS CNAME prefix,
load balance type: 2) application
Spot Fleet request: N

After successfully deploy to Elastic Beanstalk, open AWS Management Console -> Elastic Beanstalk -> Configuration -> Software -> Edit button

Add all necessary Environment properties.

In "Configuration" -> "Security", can see that it is using 

Need to assign: AmazonRDSDataFullAccess, AmazonS3FullAccess, AdministratorAccess-AWSElasticBeanstalk and AWSElasticBeanstalkReadOnly.

Since we need to modify s3, database, and ElasticBeanstalk needs to setup EC2 and load balancer.

After the settings, application should work