Nginx Ingress on AKS via Terraform

 let's  continue playing with AKS and this time around , i will be sharing the how to install nginx ingress controller on AKS, this is not new but it is more on my sharing and finding during the process. 

First of all ,  you need to have AKS to begin with , and an app to be publish , it can be a test app some sample app or your own app. i will be utilizing terraform to deploy it . 

Prerequisite 

1. AKS cluster 

2.Terraform installed 

3.Helm installed. 

Some special requirement that found during the deployment as below 

i. Public IP for nginx ingress must be in precreated RG that hold the AKS resource ; MC_rg_aks-name_region

ii. It does not need SPN like traefik and agic deployment 

so now we can deploy nginx ingress into our aks, here is my helm setup in terraform 

resource "helm_release" "nginx" {

  depends_on = [kubernetes_namespace.nginx]

  namespace = kubernetes_namespace.nginx.metadata[0].name

  name       = "nginx-ingress-controller"

  repository = "https://kubernetes.github.io/ingress-nginx"

  chart      = "ingress-nginx"

  timeout    = 300

  set {

    name  = "controller.service.type"

    value = "LoadBalancer"

  }  

  set {

    name  = "controller.service.loadBalancerIP"

    value = azurerm_public_ip.ngxip.ip_address

  }

  set {

    name  = "controller.service.annotations.service\\.beta\\.kubernetes\\.io/azure-load-balancer-health-probe-request-path"

    value = "/healthz"

  }

}

 here is how i cater the public ip resource group 

resource "azurerm_public_ip" "ngxip" {

  name                = var.ngxip

  resource_group_name = "MC_${var.aks-rg}_${var.aks-name}_${var.loc}"

  location            = var.loc

  allocation_method   = "Static"

  sku = "Standard"

  sku_tier = "Regional"

  availability_zone = "Zone-Redundant"

}

After you apply your terraform code, then you can test your nginx using the sample app that i used for agic just need to change some parameter on the code 

and here is the result 

the format may be off but it does conclude that our nginx is running fine. 

Thanks for reading and see you on next post 

here is the refence link that i refer while figuring this 

1. GitHub - kubernetes/ingress-nginx: Ingress-NGINX Controller for Kubernetes

2. Create an ingress controller in Azure Kubernetes Service (AKS) - Azure Kubernetes Service | Microsoft Docs

3.Service | Kubernetes

AKS AGIC Addon via Azure Portal

 The Previous post on enabling agic was done via terraform but let make it easier to follow which by using Azure Portal. 

Please make sure you have all this component running . 

1. AKS 

2. Application Gateway (needed for utilizing the existing app gw )

Step One . Go to AKS > Networking > Application Gateway ; enable it  

Step Two, Monitor the deployment 

Step Three, Test AGIC using sample app 

kubectl apply -f https://raw.githubusercontent.com/Azure/application-gateway-kubernetes-ingress/master/docs/examples/aspnetapp.yaml 

Step Four, Check the ingress creation and backend pool

Sample app running 

Thanks for reading and see you ..