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Description

Here, In this template we will deploy ALB Controller in AKS through helm, NGINX ingress controller on cloud to run our services through internal loadbalancer.

Pre-requisite

  • AZ Account
  • Azure CLI

Steps:-

  1. Login into AZ account using az login or az login --tenant <TENANT-ID>
  2. Login into the Azure using the Service Principal the Service Principal like az service principal -u <client-id> -p <client-password> -t <tenant-ID>.

Input Variables

The module accepts the following inputs:

Name Description Type Default
name_VV Name of the local helm repository. string "ingress-nginx"
aks_cluster_VV Name of the AKS cluster where chart will be deployed. string "ems-dev"
aks_cluster_group_VV Name of the AKS cluster group. string "ems-dev-rg"
helm_repo_VV Name of the Remote helm repository. string "https://kubernetes.github.io/ingress-nginx"
helm_chart_VV Name of the helm chart to be deployed. string "ingress-nginx"
helm_chart_version_VV Version of the helm chart to be deployed. string "4.10.1"
namespace_VV Name of the namespace where chart is deployed. string "ingress-nginx"
create_namespace_VV Boolean value for namespace creation. bool true
set_VV Value block with custom STRING values to merge with values.yaml. list(object({ name = string, value = string })) null

To use multiple nginx ingress controller you can set following variables :

You can deploy two Ingress controllers by granting them control over two different IngressClasses, then selecting one of the two IngressClasses with ingressClassName.

https://kubernetes.github.io/ingress-nginx/user-guide/multiple-ingress/

set = [{name  = "controller.service.annotations.\"service\\.beta\\.kubernetes\\.io/azure-load-balancer-internal\"", value = "true"}, {name= "controller.ingressClassResource.name", value = "nginx-internal"}, 
{name = "controller.ingressClass", value = "nginx-internal"}, 
{name = "controller.ingressClassResource.controllerValue", value = "k8s.io/nginx-internal"}, 
{name= "controller.ingressClassResource.default", value = false}, 
{name= "controller.ingressClassResource.enabled", value = true}]

## Change the name as per use case

For creating internal load Balancer (Private LB)

set = [{name  = "controller.service.annotations.\"service\\.beta\\.kubernetes\\.io/azure-load-balancer-internal\"", value = "true"}]

Deploy controller with mutiple pods

set = [{name  = "controller.replicaCount", value = 3}]

To refer this multi-controller you can set following field as per your ingress class name

 ingressClassName: "nginx-internal"

Check examples folder for sample use cases :

Outputs

Output Variables

Name Description Value
chart-name Ingress Nginx Controller Chart release name helm_release.this.metadata[0].name
chart-namespace Ingress Nginx Controller Chart deployed namespace helm_release.this.metadata[0].namespace
chart-version Ingress Nginx Controller Chart deployed version helm_release.this.metadata[0].version
chart-status Ingress Nginx Controller Chart Status helm_release.this.status
aks-cluster Ingress Nginx Controller Chart deployed AKS Cluster data.azurerm_kubernetes_cluster.aks.name
aks-cluster-resourcegroup Ingress Nginx Controller Chart deployed AKS Cluster resourcegroup data.azurerm_kubernetes_cluster.aks.resource_group_name