Microservice Monitoring

Enterprise-grade monitoring platform for Kubernetes microservices with complete observability, infrastructure automation, and security hardening.

Overview

Production-ready monitoring solution demonstrating enterprise architecture:

• Applications: Flask-based frontend and backend microservices
• Observability: Prometheus metrics, Jaeger tracing, Loki logs, Grafana dashboards
• Infrastructure: Kubernetes orchestration with Minikube for local development
• Automation: Terraform IaC, Helm package management, GitHub Actions CI/CD
• Security: RBAC, network policies, secrets management, security scanning
• Reliability: Auto-scaling (HPA), disruption budgets (PDB), resource management
• GitOps: ArgoCD declarative deployments

Architecture Components

Component	Technology	Purpose
Orchestration	Kubernetes	Container and microservice management
Metrics	Prometheus	Time-series metrics collection and querying
Tracing	Jaeger	Distributed request tracing
Logs	Loki	Log aggregation and analysis
Visualization	Grafana	Unified dashboard for metrics, logs, traces
Instrumentation	OpenTelemetry	Automatic metrics and trace collection
IaC	Terraform	Complete infrastructure automation
CI/CD	GitHub Actions	Automated testing, building, deployment
GitOps	ArgoCD	Declarative version-controlled deployments

Quick Start

One-Command Setup

# Install prerequisites (first time only)
make install

# Start everything (Minikube + all services)
make start

Script will:

• Start Minikube
• Build Docker images
• Deploy all services with Terraform
• Set up monitoring stack (Prometheus, Grafana, Jaeger, Loki)
• Show all UIs

Alternative Methods

Manual script execution:

./start-local.sh

Traditional Terraform deployment:

minikube start --driver=docker --force
eval $(minikube docker-env)

cd terraform
terraform init
terraform apply

Manual Kubernetes deployment:

kubectl apply -f k8s-security/
kubectl apply -f k8s-reliability/
kubectl apply -f app/

helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo add grafana https://grafana.github.io/helm-charts
helm install prometheus prometheus-community/prometheus -n monitoring
helm install grafana grafana/grafana -n monitoring
helm install loki grafana/loki -n monitoring
helm install jaeger bitnami/jaeger -n monitoring

GitOps deployment with ArgoCD:

kubectl create namespace argocd
kubectl apply -n argocd -f gitops/argocd-install/
kubectl apply -f gitops/applications/

Key Features

Infrastructure Automation: Terraform IaC with parameterized configuration

Enterprise Security: RBAC, zero-trust network policies, secrets management, container scanning

High Availability: HPA auto-scaling, PDB disruption protection, resource quotas

CI/CD Pipeline: Automated testing, building, security scanning, deployment via GitHub Actions

Production Manifests: Enhanced deployments with health probes, resource limits, pod affinity

Complete Documentation: Enterprise deployment guide, DevOps handbook, security procedures

Project Structure

terraform/                    Infrastructure-as-Code automation
.github/workflows/            CI/CD pipelines (build-and-deploy, security)
k8s-security/                 RBAC, network policies, secrets templates
k8s-reliability/              HPA, PDB, resource quotas
k8s-enhanced/                 Production deployment manifests
app/                          Frontend and backend services
observability/                Prometheus, Jaeger, Loki, Grafana configs
gitops/                       ArgoCD installation and applications
docs/                         Enterprise deployment and operations guides

Essential Commands

Simplified Commands (using Makefile)

make start              # Start everything
make status             # Check service status
make logs               # View backend logs
make test               # Run load tests
make demo               # Open all UIs
make stop               # Stop Minikube
make clean              # Complete cleanup
make help               # Show all available commands

Port Forwarding to Localhost

make port-forward-all   # Forward all services to localhost

# Or individually:
make open-grafana       # http://localhost:3000 (admin/prom-operator)
make open-prometheus    # http://localhost:9090
make open-jaeger        # http://localhost:16686
make open-frontend      # Frontend service

Traditional Kubernetes Commands

Local development:

minikube start --driver=docker --force
eval $(minikube docker-env)
cd app/backend && docker build -t backend-service:latest . && cd ../..
cd app/frontend && docker build -t frontend-service:latest . && cd ../..
kubectl apply -f app/backend/backend-deployment.yaml app/backend/backend-service.yaml
kubectl apply -f app/frontend/frontend-deployment.yaml app/frontend/frontend-service.yaml
kubectl get pods -n default

Kubernetes operations:

kubectl get pods -A
kubectl get svc -A
kubectl top nodes
kubectl logs -f deployment/backend -n default

Technology Stack

Kubernetes 1.28+, Docker, Minikube

Monitoring: Prometheus, Jaeger, Loki, Grafana, OpenTelemetry

Infrastructure: Terraform, Helm, ArgoCD

CI/CD: GitHub Actions, Trivy, Bandit, TruffleHog

Security: RBAC, Network Policies, Kubernetes Secrets

Application: Python 3.9 Flask

Environment Requirements

OS: Linux, macOS, Windows WSL2 Kubernetes: 1.28+ (Minikube 1.33+ for local) Container Runtime: Docker 20+ Tools: kubectl, helm 3+, terraform 1.0+, git Resources: 4GB+ RAM minimum (8GB+ recommended)

Security

RBAC enforces least-privilege access. Network policies implement zero-trust networking. Kubernetes secrets with encryption at rest. Container images scanned for vulnerabilities. Dependencies checked for known issues. Pre-commit hooks prevent credential commits.

Documentation

Support