Kubernetes Cluster Add-ons - GCP (4.1)

Owned by Jacob Almqvist
Last updated: Jun 03, 2024 by Jenni Wallin
3 min read

Kubernetes Add-ons

The following general Kubernetes add-ons should be added:

ExternalDNS

ExternalDNS is a Kubernetes add-on that configures public DNS servers with information about exposed Kubernetes services to make them discoverable.

To install ExternalDNS, follow these steps:

  1. Add bitnami repository to the helm repository:

    helm repo add bitnami https://charts.bitnami.com/bitnami

  1. Update helm repository to get the latest software:

    helm repo update

  1. Create a file called external-dns-values.yaml and populate it with the following helm values:

    gcp: zoneType: public domainFilters: - <gke_domain_dns_name from terraform output> policy: sync provider: google txtOwnerId: <gke_domain_zone_name from terraform output> serviceAccount: annotations: iam.gke.io/gcp-service-account: <external_dns_service_account from terraform output>

  2. Install the ExternalDNS helm chart:

    Where <helm chart version> is a compatible version listed in the Compatibility Matrix (4.1).

Ingress NGINX Controller

This is an optional add-on. Refer to the Introduction - GCP (4.1) chapter for additional information.

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

To install Ingress NGINX Controller, follow these steps:

  1. Add ingress-nginx repository to the helm repository:

  1. Update helm repository to get the latest software:

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

  1. Install the ingress-nginx-controller helm chart:

    Where <helm chart version> is a compatible version listed in the Compatibility Matrix (4.1).

If you are running multiple installations on the cluster, in case the Nginx IngressClass resource is already installed, then you should set the following helm value to avoid hitting a resource already exists error:

controller.ingressClassResource.enabled=false

 

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

This section is now complete. Now proceed to the Usage Engine Private Edition Preparations - GCP (4.1) section.