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In the following sections, you'll implement TLS for a simple Kubernetes application using a Node.js project that mocks a payment processing application. The application code and necessary Kubernetes configuration are available in this GitHub repository.
mkcert: This is used to obtain a trusted TLS certificate with a custom domain name for your development machine. You can install mkcert on your development machine following the official instructions.
A Kubernetes distribution: You need to install a Kubernetes distribution to create the Kubernetes cluster and other necessary resources, such as deployments and services. This tutorial uses kind (v0.18.0), but you can use any other Kubernetes distribution, including minikube or K3s.
git clone https://github.com/snyk-snippets/tls-in-k8s.git
When implementing TLS for a production system, you should consider using a public certificate from a trusted CA, such as Let's Encrypt. While this requires that you have access to your site domain, you can implement additional configurations, such as using a load balancer service to expose your application or managing multiple certificates through a certificate manager like cert-manager. The advantages of exposing your application through a load balancer include improved availability, scalability, and resilience. And using a certificate manager makes the provisioning and management of your cluster certificates effortless in the future.
As cloud technology continues to evolve, the demand for Kubernetes is skyrocketing. As a result, security has become a top priority for developers looking to protect their application data. That's where Transport Layer Security (TLS) comes into play. TLS is essential for ensuring a secure connection between your applications and the internet.
helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx helm repo update helm install ingress-nginx ingress-nginx/ingress-nginx -f ingress-values.yaml
A Kubernetes distribution: You need to install a Kubernetes distribution to create the Kubernetes cluster and other necessary resources, such as deployments and services. This tutorial uses kind (v0.18.0), but you can use any other Kubernetes distribution, including minikube or K3s.
A Kubernetes distribution: You need to install a Kubernetes distribution to create the Kubernetes cluster and other necessary resources, such as deployments and services. This tutorial uses kind (v0.18.0), but you can use any other Kubernetes distribution, including minikube or K3s.
End-to-end data encryption with a service mesh: Using an end-to-end data encryption mechanism with a service mesh like Istio, TLS can secure communication between different microservices within a Kubernetes cluster. This is a popular approach for modern, distributed microservice architectures.
Git and Helm: You need Git installed to use the demo project locally and the Helm package manager for Kubernetes. This guide uses Helm v3.11.2.
Git and Helm: You need Git installed to use the demo project locally and the Helm package manager for Kubernetes. This guide uses Helm v3.11.2.
Now, you need to install the Nginx Ingress Controller so that it can redirect incoming requests to your payment app to use HTTPS. Since you've exposed the app using nodePort, you need to install the Ingress using a custom value file that specifies the service type to NodePort.