k8s-aws-terraform-cluster VS ingress-nginx

git clone https://github.com/garutilorenzo/k8s-aws-terraform-cluster cd k8s-aws-terraform-cluster/example/

This terraform module will deploy a high available Kubernetes (K8s) cluster on Amazon AWS, using mixed on-demand and spot instances. K8s is installed through kubeadm ad usesContainerd as CRI and Flannel as CNI. You can also install longhorn for the persistent storage and nginx ingress controller for the ingress rules. Please note, this is only an example on how to Deploy a Kubernetes cluster. For a production environment you should use EKS or ECS.

ingress-nginx

The second one is a combination of tools: External DNS, cert-manager, and NGINX ingress. Using these as a stack, you can quickly deploy an application, making it available through a DNS with a TLS without much effort via simple annotations. When I first discovered External DNS, I was amazed at its quality.

resource "helm_release" "icrelease" { name = "nginx-ingress" repository = "https://kubernetes.github.io/ingress-nginx" chart = "ingress-nginx" version = "4.9.1" namespace = kubernetes_namespace.icnamespace.metadata[0].name set { name = "controller.ingressClassResource.default" value = "true" } }

helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx helm repo update helm upgrade --install ingress-nginx ingress-nginx/ingress-nginx --namespace ingress-nginx --create-namespace -f custom/ghost/nginx.yaml

For example, if you chose Nginx Ingress, you will use some of its dozens of annotations that are not portable if you decide to switch to another Ingress implementation like Apache APISIX.

helm repo add jetstack https://charts.jetstack.io helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx helm repo add rancher-latest https://releases.rancher.com/server-charts/latest helm repo update helm repo list

apiVersion: networking.k8s.io/v1 kind: Ingress metadata: annotations: # sticky session, from documentation: https://kubernetes.github.io/ingress-nginx/examples/affinity/cookie/ nginx.ingress.kubernetes.io/affinity: "cookie" nginx.ingress.kubernetes.io/affinity-mode: "persistent" # change to "balanced" (default) to redistribute some sessions when scaling pods nginx.ingress.kubernetes.io/session-cookie-name: "name-distinguishing-services" nginx.ingress.kubernetes.io/session-cookie-max-age: "172800" # in seconds, equivalent to 48h [...]

Everything in the YAML snippets below — except for ingress configuration — relates to configuring the NGINX ingress controller. This includes customizing the default configuration.

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

Kubernetes alone is enough of an example. So are various cloud utilities used all around the world, such as ingress-nginx, cert-manager, traefik, Docker and countless others. Go is what smart modern web developers actually want to use to create great products. Everything else is what industry dinosaurs force them to use to make a living at big companies peddling trash.