Minikube Tests

A collection of Kubernetes manifests to demonstrate and test common features on Minikube:

Table of Contents

• Overview
• Prerequisites
• Examples
  • StatefulSet Test
  • PV Test
  • Inspect Pod
  • PVC Test
  • DaemonSet Test
• Usage
• Features Demonstrated

Prerequisites

• Minikube installed and running
• kubectl configured to talk to your Minikube cluster

Examples

• helm-test

  Helm chart examples for different environments:

  • Chart Structure:
    • Chart.yaml - Main chart metadata
    • values.yaml - Base configuration
    • dev-values.yaml/prod-values.yaml - Environment-specific overrides
  • Templates:
    • Deployment, Service, Ingress, and ConfigMap templates in templates/ directory

• kustomize-test

  Kustomize overlays for environment-specific configurations:

  • Base Configuration:
    • base/deployment.yaml - Common deployment
    • base/service.yaml - Common service
    • base/kustomization.yaml - Base resources
  • Overlays:
    • dev/ - Development configuration (3 replicas)
    • prod/ - Production configuration (5 replicas)

• observability-test

  Prometheus monitoring stack:

  • prometheus/config.yaml - Prometheus configuration
  • prometheus/deployment.yaml - Prometheus server
  • prometheus/service.yaml - Service exposing Prometheus UI

• statefulset-test

  Examples of StatefulSets with persistent storage:

  • MySQL:
    • mysql-statefulset/mysql-statefulset.yaml (StatefulSet)
    • mysql-statefulset/mysql-headless.yaml (Headless Service)
    • mysql-statefulset/php-app-deployment.yaml (PHP-Nginx app to connect to MySQL)
    • mysql-statefulset/php-app-svc.yaml (Service to expose PHP app)
  • Redis:
    • redis-statefulset/redis-statefulset.yaml (StatefulSet)
    • redis-statefulset/redis-headless.yaml (Headless Service)
  • NGINX:
    • nginx-statefulset/nginx-statefulset.yaml (StatefulSet)
    • nginx-statefulset/nginx-headless.yaml (Headless Service)

• pv-test

  Show how to create a hostPath PersistentVolume and consume it via a PVC in an NGINX Pod.
  Files:

  • nginx-pv.yaml (PV)
  • nginx-pvc.yaml (PVC)
  • nginx-pod.yaml

• inspect-pod

  Deploy a standalone NGINX Pod and expose it with a NodePort Service for quick inspection.
  Files:

  • nginx-deploy.yaml
  • nginx-svc.yaml

• pvc-test

  Test writing data into a PVC from a BusyBox Pod.
  Files:

  • pvc.yaml (PVC)
  • pvc-deploy.yaml (Pod that writes to the PVC)

• daemonset-test

  Deploy a complete monitoring stack on Minikube:
  - A Flask app exposing Prometheus metrics
  - Prometheus server (with ConfigMap)
  - Grafana dashboard
  - Node Exporter as a DaemonSet
  Files:

  • metric-app.yaml (Flask metrics app Deployment & Service)
  • prometheus-config.yaml (ConfigMap)
  • prometheus-deploy.yaml (Prometheus Deployment)
  • prometheus-svc.yaml (Prometheus Service)
  • grafana.yaml (Grafana Deployment & Service)
  • node-exporter-daemonset.yaml (Node Exporter DaemonSet)
  • node-exporter-service.yaml (Node Exporter Service)
  • Custom Flask app with Prometheus metrics in app/ directory

Usage

1. Navigate into a test directory, e.g.:

   cd statefulset-test

2. Apply all manifests:

   kubectl apply -f .

3. Verify resources:

   kubectl get pods,svc,pv,pvc

4. Clean up:

   kubectl delete -f .

Features Demonstrated

• Helm Charts: Packaging and environment-specific configuration management
• Kustomize Overlays: Managing different environments with patching
• Prometheus Monitoring: Setting up metrics collection and monitoring
• StatefulSets: Deploying stateful applications with stable network identities and persistent storage
• PersistentVolumes: Managing storage in Kubernetes with different provisioners
• Services: Exposing applications using ClusterIP and NodePort service types
• DaemonSets: Running pods on every node in the cluster
• ConfigMaps: Providing configuration to applications
• Multi-container Pods: Running multiple containers in a single pod (e.g., PHP-NGINX)

Feel free to explore each directory and experiment with the manifests to learn how Kubernetes storage, services, and monitoring work on Minikube.