Devops-Final Project By ShariqSP
Project: Deploying a Scalable Java Web Application with AWS RDS
Objective: To deploy a scalable Java web application using AWS services, Ansible for infrastructure provisioning, Docker for containerization, and Kubernetes for orchestration, with MySQL as the database hosted on AWS RDS.
Components (with changes):
- Web Application: Develop a Java-based web application using a framework like Spring Boot, with MySQL as the database backend.
- AWS Services:
- EC2: Launch EC2 instances to host the Java application.
- S3: Use S3 for storing static assets.
- VPC: Set up a Virtual Private Cloud to isolate resources.
- IAM: Configure IAM roles and policies for secure access management.
- RDS (MySQL): Provision an RDS instance to host the MySQL database.
- Ansible: Write Ansible playbooks to automate the provisioning and configuration of EC2 instances, RDS instance, and other infrastructure components. Define roles for different components (e.g., web server, database, etc.).
- Docker:
- Containerize your Java application using Docker.
- Write Dockerfiles for building the application image.
- Push the Docker image to a Docker registry (e.g., Docker Hub, AWS ECR).
- Kubernetes:
- Set up a Kubernetes cluster on AWS (you can use Amazon EKS for managed Kubernetes).
- Deploy your Docker containers onto the Kubernetes cluster.
- Configure scaling policies to automatically scale the application based on demand.
- Implement rolling updates and rollback strategies for seamless deployments.
- CI/CD Pipeline:
- Use a CI/CD tool such as Jenkins, GitLab CI/CD, or AWS CodePipeline.
- Set up a pipeline to automate the build, test, and deployment process.
- Integrate the pipeline with version control (e.g., GitHub) to trigger automatic builds on code commits.
- Include testing stages to ensure the quality of your application before deployment.
Additional Steps:
- Database Configuration: Configure your Java application to connect to the MySQL database hosted on AWS RDS. Update the application's database configuration with RDS endpoint, username, password, etc.
- Database Migration: Set up database migration scripts (e.g., using Flyway or Liquibase) to manage schema changes and data migrations.
- Integration Testing: Write integration tests to ensure that your Java application interacts correctly with the MySQL database on RDS.
- Secrets Management: Use AWS Secrets Manager or another secure solution to manage sensitive information like database credentials.
Conclusion: By integrating a Java-based web application with AWS RDS, you'll gain experience in building and deploying scalable applications on AWS while ensuring data persistence and integrity with a managed database service. This project will provide you with valuable skills in cloud-native application development and deployment.
Solution: Deploying a Scalable Java Web Application with AWS RDS
To accomplish the project objectives, follow these steps:
- Develop the Java Web Application: Create a Java-based web application using Spring Boot, integrating with MySQL for data persistence. Package the application as a WAR file.
- Provision AWS Resources: Use AWS Management Console or AWS CLI to provision EC2 instances, set up VPC, IAM roles, and create an RDS MySQL instance.
- Configure Ansible: Write Ansible playbooks to automate the provisioning and configuration of EC2 instances and RDS MySQL instance. Define roles for different components such as web server, database, etc.
- Containerize with Docker: Dockerize the Java application by packaging it as a WAR file and deploying it to Tomcat running on EC2 instances. Build Docker images and push them to a Docker registry.
- Set Up Kubernetes: Deploy a Kubernetes cluster on AWS using Amazon EKS. Deploy Docker containers onto the Kubernetes cluster and configure scaling policies for auto-scaling.
- Implement CI/CD Pipeline: Use a CI/CD tool like Jenkins or AWS CodePipeline to automate the build, test, and deployment process. Integrate the pipeline with version control and include testing stages.
- Database Configuration: Configure the Java application to connect to the MySQL database hosted on RDS. Update the application's database configuration with RDS endpoint, username, password, etc.
- Database Migration: Set up database migration scripts using tools like Flyway or Liquibase to manage schema changes and data migrations.
- Integration Testing: Write integration tests to ensure the Java application interacts correctly with the MySQL database on RDS.
- Secrets Management: Use AWS Secrets Manager or another secure solution to manage sensitive information like database credentials.
By following these steps, you'll successfully deploy a scalable Java web application on AWS with MySQL hosted on RDS. This solution leverages automation, containerization, and Kubernetes orchestration to ensure efficient deployment and management of the application.
Sample Ansible Playbook:
---
- name: Provision EC2 instances and configure Apache Tomcat
hosts: localhost
tasks:
- name: Provision EC2 instances
ec2_instance:
key_name: my-key
instance_type: t2.micro
image: ami-12345678
region: us-west-2
count: 2
state: present
wait: yes
group: my-security-group
vpc_subnet_id: subnet-12345678
assign_public_ip: yes
instance_tags:
Name: web-server
register: ec2
- name: Wait for EC2 instances to be ready
wait_for_connection:
timeout: 300
sleep: 5
connect_timeout: 30
delay: 10
when: ec2 is defined
- name: Install Java
become: yes
become_user: root
apt:
name: openjdk-11-jdk
state: present
- name: Install Apache Tomcat
become: yes
become_user: root
apt:
name: tomcat9
state: present
- name: Enable Tomcat Manager
become: yes
become_user: root
template:
src: tomcat-users.xml.j2
dest: /etc/tomcat9/tomcat-users.xml
owner: tomcat
group: tomcat
mode: '0640'
- name: Restart Apache Tomcat
become: yes
become_user: root
service:
name: tomcat9
state: restarted
Sample Dockerfile for Tomcat Deployment:
FROM tomcat:9-jre11
# Remove the default Tomcat applications
RUN rm -rf /usr/local/tomcat/webapps/*
# Copy the WAR file into the Tomcat webapps directory
COPY target/my-web-app.war /usr/local/tomcat/webapps/ROOT.war
# Expose port 8080
EXPOSE 8080
# Start Tomcat
CMD ["catalina.sh", "run"]
Sample Kubernetes Deployment YAML:
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-web-app
spec:
replicas: 3
selector:
matchLabels:
app: my-web-app
template:
metadata:
labels:
app: my-web-app
spec:
containers:
- name: my-web-app
image: myregistry/my-web-app:latest
ports:
- containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
name: my-web-app
spec:
selector:
app: my-web-app
ports:
- protocol: TCP
port: 80
targetPort: 8080
type: LoadBalancer