LMS Web Portal & Virtual Training Cluster
A comprehensive, cloud-native Learning Management System (LMS) engineered for high-concurrency vocational training, digital assessments, and automated credential issuance. Architected the complete solution from microservices development to zero-downtime containerized deployments.
LMS Web Portal & Virtual Training Cluster Architecture Overview
Primary system architecture and live operational environment.
Automated DevSecOps Pipeline
Interactive topology showing continuous integration, security gates, and zero-downtime deployment stages.
Git Push
Protected branch triggers webhook with commit signature verification.
Security Gate
SonarQube SAST analysis and Trivy image scanning for zero-day vulnerabilities.
Docker Build
Multi-stage alpine container compilation producing minimal footprint artifacts.
Cluster Deploy
Zero-downtime rolling canary update with automated reverse-proxy health checks.
Health Telemetry
Prometheus metrics collection, SSL audit check, and real-time alert hooks active.
commit 7f4a218d (HEAD -> main, origin/main) | Author: Md. Kamrul Hasan <devops@mohammadkamrulhasan.com>
gpg: Signature made using RSA key ID 9F84B7E1 - Good signature verified.
Automated CI hook triggered: 18 unit tests passed, zero regressions detected. Proceeding to SAST security gate...
# Connected to LMS Web Portal & Virtual Training Cluster Production Telemetry Node.
# Type or select a command above to query live infrastructure metrics.
$ devsecops-cli inspect --target="lms-web-portal"
[PASS] Production Image: lms-web-portal:latest (sha256:7e98a1f4b0)
[PASS] Zero Critical CVEs detected | TLS 1.3 Strict Mode Enforced
[INFO] Target Outlets/Users: 5,000+ Active
[INFO] Primary Engine: Laravel, Docker, GitLab CI, Redis, Nginx, MySQL, Linux, FFmpeg
> Ready for instruction...
Measurable Engineering Impact
Quantifiable system metrics, performance gains, and uptime guarantees delivered in production.
Concurrent Users
Seamless load handling during peak nationwide certification examinations.
System Availability
Uninterrupted access maintained across 24/7 training modules.
Deployment Speed
From git commit push to production zero-downtime deployment.
Bandwidth Savings
Achieved via adaptive HLS streaming and Brotli compression.
Key Functional Capabilities
Architectural features built to handle scale, security, and automation.
High-Concurrency Examination Engine
Asynchronous submission pipelines buffering over 5,000 simultaneous quiz submissions without dropping HTTP connections or locking DB tables.
Automated Certificate Verification & PKI
Cryptographically signed PDF certificates generated on completion with QR-code verification for tamper-proof validation.
Adaptive Video Delivery Pipeline
Automated background FFmpeg transcoding converting course lectures into low-bandwidth HLS streams optimized for remote learners.
Granular RBAC & Proctor Auditing
Role-based access matrix separating students, course coordinators, and proctors with complete audit logs of exam tab switches.
Tactical Engineering Deep-Dive
Problem statement analysis and DevSecOps architectural resolution.
The Challenge
Legacy synchronous training infrastructure suffered from severe database locking during simultaneous nationwide qualification exams (over 4,000 concurrent students). Manual server provisioning frequently led to exam delays, video streaming buffer spikes, and missing student audit trails.
Tactical Solution
Architected a decoupled modular platform with Dockerized PHP/Laravel application workers, Redis queuing for asynchronous video transcode & grading tasks, Nginx reverse proxy load-balancing, and automated GitLab CI/CD pipelines deploying rolling zero-downtime updates with automated health probes.
Key Validated Milestones & Outcomes
System Architecture Specifications
Granular technical specification across delivery pipelines, infrastructure, and governance.
CI/CD Pipeline
- • Code Push to GitLab repository with branch protection rules
- • Static code analysis via SonarQube & vulnerability scan via Trivy
- • Multi-stage Docker build producing hardened minimal alpine images
- • Automated unit & integration testing suite in isolated ephemeral containers
- • Rolling deployment behind Nginx load balancer with zero downtime
Infrastructure
- • Nginx reverse proxy with TLS 1.3, HTTP/2, and rate-limiting
- • Docker container clusters orchestrated with automated health checks
- • Redis caching layer for session management and background task queues
- • MySQL replication cluster with read/write splitting
Security & Controls
- • Role-Based Access Control (RBAC) with principle of least privilege
- • Automated daily encrypted off-site snapshots
- • OWASP Top 10 mitigation including CSRF, strict CORS, and Content Security Policy (CSP)
Project Intelligence
SEC-READYLive Production Target
lms.inspir8bd.comRepository & Source
View Source CodeOrganization / Client
Enterprise E-Learning & Government Training
Engineering Role
Lead DevOps & Full Stack Engineer
Lifecycle / Duration
10 Months
Operational Status
Related Tactical Deployments
OpenStack & Proxmox Private Cloud Virtualization
An enterprise-scale hyperconverged private cloud virtualization platform combining Proxmox VE cluster virtualization and OpenStack IaaS automation. Designed and deployed the multi-node infrastructure providing on-demand compute, isolated software-defined networking, and high-availability Ceph distributed storage.
TADA Automated Expense & Travel Management
A digitized, automated Travel Allowance & Daily Allowance (TADA) expense disbursement system developed for Agrani DOER Agent Banking. Transforms complex, multi-tiered paper reimbursement submissions into a fast, transparent digital workflow with automated policy compliance checks.
Enterprise Job Application & Recruitment Portal
A resilient, high-volume applicant tracking and recruitment portal designed to manage nationwide hiring campaigns for Agrani DOER Agent Banking. Features structured multi-stage application forms, automated resume parsing, criterion-based shortlisting, and automated exam admit card generation.