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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 the bitnami helm repository:

    Code Block
    languagebash
    helm repo add bitnami https://charts.bitnami.com/bitnami
  2. Update the helm repository to get the latest software:

    Code Block
    languagebash
    helm repo update
  3. Create a file called external-dns-values.yaml and populate it with the following helm values:

    Code Block
    languageyaml
    aws:
      zoneType: public
    domainFilters:
      - <eks_domain_zone_name from terraform output>
    policy: sync
    provider: aws
    txtOwnerId: <eks_domain_zone_id from terraform output>
    serviceAccount:
      create: false
      name: external-dns
Info

Helm install command assumes service account for ExternalDNS already exists.

Service Account name set to metadata.name under iam.serviceAccounts portion in the uepe-eks.yaml file in Set Up Kubernetes Cluster - AWS section

  1. Install the ExternalDNS helm chart:

    Code Block
    languagebash
    helm install external-dns bitnami/external-dns -n uepe \
    --version <helm chart version> -f external-dns-values.yaml

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

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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

Info

This is an optional add-on.

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Code Block
languagebash
NAME                        	NAMESPACE	REVISION	UPDATED                             	STATUS  	CHART                             	APP VERSION
aws-efs-csi-driver          	uepe     	1       	2024-02-06 14:00:36.817518 +0800 +08	deployed	aws-efs-csi-driver-2.5.4          	1.7.4      
aws-load-balancer-controller	uepe     	1       	2024-02-06 14:09:22.86071 +0800 +08 	deployed	aws-load-balancer-controller-1.7.0	v2.7.0     
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

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