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WordPress on Kubernetes with Helm

This project provides a complete setup for deploying a production-grade WordPress application on Kubernetes using Helm. It includes custom Docker images for WordPress, MySQL, and Nginx. Using Helm charts for managing Kubernetes resources.

Prerequisites

  • Docker
  • Minikube
  • Helm

Step-by-Step Deployment Guide

Step 1: Build Docker Images

  1. Build the WordPress Docker image:

    cd ../wordpress
docker build -t your-dockerhub-username/wordpress .

  2. Build the MySQL Docker image:

    cd ../mysql
docker build -t your-dockerhub-username/mysql .

  3. Build the Nginx Docker image:

    cd ../nginx
docker build -t your-dockerhub-username/nginx .

  4. Push the images to Docker Hub:

    docker push your-dockerhub-username/wordpress
docker push your-dockerhub-username/mysql
docker push your-dockerhub-username/nginx

Step 2: Configure Helm Charts

Update the values.yaml files for each Helm chart with the appropriate Docker image repositories and tags.

Step 3: Deploy Helm Charts

  1. Deploy MySQL

    cd helm-charts/mysql
helm install mysql .

  2. Deploy WordPress:

    cd ../wordpress
helm install wordpress .

  3. Deploy Nginx:

    cd ../nginx
helm install nginx .

Step 4: Verify the Deployment

  1. Check Pods:

    kubectl get pods

  2. Check services:

    kubectl get svc

  3. Access wordpress:

    minikube ip

Step 5: Clean Up

helm delete mysql
helm delete wordpress
helm delete nginx

Step 5: Set Up Monitoring

Step 5.1: Deploy Prometheus

  1. Add the Prometheus Helm repository: 
    helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update
  2. Create a namespace for monitoring: 
    kubectl create namespace monitoring
  3. Deploy Prometheus: 
    helm install prometheus prometheus-community/prometheus -f ./monitoring/prometheus/values.yaml

Step 5.2: Deploy Grafana

  1. Add the Grafana Helm repository: 
    helm repo add grafana https://grafana.github.io/helm-charts
helm repo update
  2. Deploy Prometheus: 
    helm install grafana grafana/grafana -n monitoring
  3. Get the Grafana admin password: 
    kubectl get secret --namespace monitoring grafana -o jsonpath="{.data.admin-password}" | base64 --decode ; echo
  4. Access Grafana: 
    kubectl get svc -n monitoring
    Open the Grafana URL in your browser and log in with the username admin and the password obtained in the previous step.

Step 5.4: Create Dashboards

Import predefined dashboards for MySQL, Nginx, and WordPress:

Go to Create > Import. Use the following dashboard IDs to import: MySQL: 7362 Nginx: 2135 WordPress: Create a custom dashboard with relevant metrics.