System Requirements Document

1. Introduction

This System Requirements Document (SRD) outlines the capabilities and requirements for a system designed to support infrastructure deployment and process automation using AWS and DevOps tools. The system is intended to facilitate the role of an AWS/DevOps Engineer, focusing on cloud automation and infrastructure management.

2. System Overview

The system will leverage AWS cloud services and DevOps methodologies to automate infrastructure deployment, enhance process efficiency, and ensure high availability and security of applications. Key components include AWS services, DevOps tools, and Infrastructure as Code (IaC) practices.

3. Functional Requirements

Cloud Platform Management

• As a DevOps Engineer, I want to manage AWS EC2 instances to ensure scalable and reliable compute resources.
• As a DevOps Engineer, I want to configure AWS S3 buckets for secure and scalable storage solutions.
• As a DevOps Engineer, I want to set up AWS VPCs to isolate and secure network resources.
• As a DevOps Engineer, I want to manage AWS IAM roles and policies to control access and permissions effectively.
• As a DevOps Engineer, I want to configure AWS RDS instances for managed database services.
• As a DevOps Engineer, I want to deploy AWS Lambda functions for serverless computing solutions.

DevOps Tools and Automation

• As a DevOps Engineer, I want to use Git and GitHub for version control to manage code changes and collaboration.
• As a DevOps Engineer, I want to utilize AWS CLI for command-line management of AWS resources.
• As a DevOps Engineer, I want to monitor systems using AWS CloudWatch to ensure operational health and performance.
• As a DevOps Engineer, I want to implement CI/CD pipelines to automate the software delivery process.
• As a DevOps Engineer, I want to use Terraform for Infrastructure as Code to automate infrastructure provisioning.

Architecture and Security

• As a DevOps Engineer, I want to design three-tier architecture solutions to separate presentation, logic, and data layers.
• As a DevOps Engineer, I want to implement microservices architecture for modular and scalable application development.
• As a DevOps Engineer, I want to ensure cloud security by configuring security groups and NACLs.

Operating Systems and Scripting

• As a DevOps Engineer, I want to manage Linux servers using Ubuntu and CentOS distributions.
• As a DevOps Engineer, I want to automate tasks using Bash scripting to improve efficiency.
• As a DevOps Engineer, I want to develop scripts in Python for automation and integration tasks.

Certifications

• As a DevOps Engineer, I want to apply knowledge from AWS Cloud Practitioner Essentials to effectively utilize AWS services and solutions.

4. User Personas

• DevOps Engineer: Responsible for managing cloud infrastructure, automating processes, and ensuring system reliability and security.

5. Core User Flows

1. Infrastructure Deployment Flow

   • The DevOps Engineer writes Terraform scripts to define infrastructure.
   • The scripts are executed to provision AWS resources like EC2, S3, and VPC.
   • AWS CLI is used for additional configuration and management tasks.
   • CloudWatch is set up to monitor the deployed infrastructure.

2. Application Deployment Flow

   • The DevOps Engineer sets up a CI/CD pipeline using GitHub and AWS services.
   • Code changes are committed to GitHub, triggering the pipeline.
   • The application is deployed across a three-tier architecture on AWS.
   • Auto Scaling and Load Balancing are configured for high availability.

6. Visuals Colors and Theme

• Professional blues and teals to reflect a modern and reliable cloud infrastructure environment.

7. Signature Design Concept

• Clean and intuitive interface focusing on efficiency and ease of use for infrastructure management tasks.

8. Interaction Model & Motion Direction

• Responsive design with smooth transitions and feedback for user actions to enhance usability.

9. Non-Functional Requirements

• Scalability: The system must handle increasing loads by scaling AWS resources automatically.
• Reliability: Ensure high availability through redundant architecture and failover mechanisms.
• Security: Implement robust security measures to protect data and resources.

10. Tech Stack

• Frontend: React.js
• Backend: Python + FastAPI
• Database: MySQL with Alembic migrations
• Cloud Platform: AWS (EC2, S3, VPC, IAM, RDS, Lambda)
• DevOps Tools: Git, GitHub, AWS CLI, CloudWatch, Terraform

11. Assumptions and Constraints

• The system will primarily use AWS services for cloud infrastructure.
• The user has basic knowledge of AWS and DevOps practices.
• The system must comply with relevant security and data protection regulations.

12. Glossary

• AWS: Amazon Web Services
• EC2: Elastic Compute Cloud
• S3: Simple Storage Service
• VPC: Virtual Private Cloud
• IAM: Identity and Access Management
• RDS: Relational Database Service
• CI/CD: Continuous Integration/Continuous Deployment
• IaC: Infrastructure as Code
• NACL: Network Access Control List