Kubernetes Cluster Add-ons - Private Cloud

Kubernetes Add-ons

external-dns

ExternalDNS is a Kubernetes add-on that configures public DNS servers with information about exposed Kubernetes services to make them discoverable. How to setup ExternalDNS is highly dependent on how your cluster is setup and your other infrastructure. Therefore refer to the ExternalDNS documentation for instruction on how to set it up for your case.

ingress-nginx-controller

This is an optional add-on.

The Ingress NGINX Controller is an ingress controller for Kubernetes using NGINX as a reverse proxy and load balancer.

To install the Ingress NGINX Controller, follow these steps:

Add the ingress-nginx helm repository:

helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx

Update the helm repository to get the latest software:
```
helm repo update
```

Create a file called ingress-nginx-values.yaml and populate it with the following helm values:

controller:
  scope:
    enabled: true
  admissionWebhooks:
    enabled: false
  metrics:
    enabled: false
    serviceMonitor:
      enabled: false
  ingressClassResource:
    name: nginx
    enabled: true
    default: false
    controllerValue: "k8s.io/ingress-nginx"
  watchIngressWithoutClass: false
  service:
    targetPorts:
      http: 80
      https: 443
    type: NodePort
  extraArgs:
    v: 1
serviceAccount:
  create: false

Install the ingress-nginx-controller helm chart:
```
helm install ingress-nginx ingress-nginx/ingress-nginx --version <helm chart version> -f ingress-nginx-values.yaml -n uepe
```
Where <helm chart version> is a compatible version listed in the Compatibility Matrix.

Executing helm list should show all add-ons added in this section. Example:

NAME                        	NAMESPACE	REVISION	UPDATED                             	STATUS  	CHART                             	APP VERSION
external-dns                	uepe     	1       	2024-02-06 14:06:28.705309 +0800 +08	deployed	external-dns-6.31.5               	0.14.0     
ingress-nginx-controller        uepe     	1       	2024-02-22 11:44:54.18561 +0800 +08 	deployed	ingress-nginx-4.9.1               	1.9.6

This section is now complete. Now proceed to the Usage Engine Private Edition Preparations - Private Cloud section.