Elastic Beanstalk Components | Overview & Hands-On.

 Elastic Beanstalk Components - Overview & Hands-On.

Scope:

• Concept,
• Here are the key components of Elastic Beanstalk,
• Architecture diagram of Elastic Beanstalk,
• Hands-On.

Concept:

• Elastic Beanstalk is a fully managed service by AWS that simplifies the deployment and scaling of applications. 
• Elastic Beanstalk abstracts much of the infrastructure management while providing flexibility and control. 

Architecture diagram of Elastic Beanstalk:

Here are the key components of Elastic Beanstalk:

1. Application

• A logical container for the Elastic Beanstalk environment.
• Represents your project (e.g., a web app or service).
• Can contain multiple environments (like dev, test, prod).

2. Application Version

• A specific deployable version of your app (code + configuration).
• Stored in Amazon S3.
• twtech can deploy different versions to different environments.

3. Environment

• A version of your application deployed on AWS infrastructure.
• Types:
• Web Server Environment – Handles HTTP requests (e.g., Nginx, Apache).
• Worker Environment – Processes background tasks from an Amazon SQS queue.

4. Environment Configuration

• Contains all settings for an environment:
• EC2 instance types
• Auto Scaling policies
• Load balancing settings
• Database configuration (optional)
• Environment variables

 5. Platform

• A preconfigured stack of:
• Operating System (Amazon Linux, AL2023, etc.)
• Runtime (Node.js, Python, Java, .NET, etc.)
• Web server (e.g., Apache, Nginx)
• Managed by AWS with regular updates.

 6. Elastic Beanstalk CLI (EB CLI)

• A command-line tool (eb) to interact with Beanstalk.
• Allows you to deploy, monitor, and manage environments from your terminal.

 7. AWS Resources (Provisioned by Beanstalk)

Elastic Beanstalk automatically provisions and manages AWS resources, including:

• Amazon EC2 – Compute instances
• Elastic Load Balancer (ELB) – For distributing traffic
• Auto Scaling Group – For scaling in/out
• Amazon RDS (optional) – Database
• Amazon S3 – Stores application versions
• Amazon CloudWatch – Monitoring and logging

 8. Configuration Files (.ebextensions)

• Located in your source bundle (.zip or .war)
• Used to customize environment and install additional software or packages.

 9. Health Monitoring & Observability. 

• Provides detailed health status for your application (Ok, Warning, Severe).
• Uses metrics like HTTP response codes, latency, and instance status.

Project: Hands-on

How twech use the Elastic Beanstalk in aws:.To create and manage resources

Step-1:

• Search for the AWS service: Elastic Beanstalk

• Create an application:

• Configure environment

Step-2:

Application information

• Application name: twtechapp
• Environment information
• twtech Chooses the name, subdomain and description for its environment.

NB: 

• These cannot be later changed.
• Environment name: twtechapp-dev

Step-3:

• How twtech subsequently accesses the application on UI:
• Application has an auto-generated-domain.us-east-2.elasticbeanstalk.com
• Platform
• Platform type: node.js

• Application code

Presets

• Start from a preset that matches your use case or choose custom configuration to unset recommended values and use the service's default values.

Step-4:

• twtech Configures service access
• twtech Creates role: Elastic beanstalk 

twtech Adds permissions

Step-5

• twtech Also create IAM role for EC2 instances: 

twtech Selects the following "three" IAM policies: 

• AWSElasticBeanstalkWorkerTier,
•  AWSElasticBeanstalkWebTier, 
• AWSElasticBeanstalkMulticonta

• twtech Enters a role name: twtech-elasticbeanstalk-service-role

Step-6:

• twtech Goes back to finish the configuration of Elasticbeanstalk  from UI (console), 
• twtech needs to refresh and select the created roles: twtech-elasticbeanstalk-service-role

Set up networking, database, and tags - optional
 Select vpc:

• Instance settings

Step-7:

Database

• twtech Integrates an RDS SQL database with its environment

Step-8:

twtech Configures instance traffic and scaling:

Step-9:

• twtech Configures updates, monitoring, and logging – optional

Step-10:

twtech Reviews & create the Elasticbeanstalk.

From: Launching

To: Evironment Successfully Launched

Step-11:

• twtech Checks email for notifiacation:

Step-12:

• twtech Confirms subscription:

Step-13:

• twtech goes back to Elastic Beanstalk UI to access Events generated:

Step-14:

• twtech Monitors Service metrics

Step-15:

• twtech conduct Health checks to its resources

Step-16:

• twtech verifies that Instance created:

Step-17:

• twtech verifies that Security group created:

Step-18:

• twtech verifies that S3 bucket created: elasticbeanstalk-us-east-2-980xxxxxxx

Step-19:

• twtech verifies that an ElasticIP was created and allocated the instance created: twtechapp-dev

Step-20:

• An autoscaling group was created and manage instances:

Step-21:

twtech accesses the application with the domain name on the browser:  twtechapp-dev.eba-xxxxxx.us-east-2.elasticbeanstalk.com

Step-22:

•  twtech creates another environment from the an existing environment (replicates) from: Dev to QA

twtech-insights: 

• Any unwanted  applications in twtech environment can be selected and deleted to reduce costs. 
• When twtech deletes any applications, all the resources that were created alongside, using Elastic Beanstalk are also delete.