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6. Perform helm install with the config file oci-native-ingress-controller-values.yaml

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1. Create a Kubernetes secret containing the Oracle Cloud Infrastructure user authentication details for ExternalDNS to use when connecting to the Oracle Cloud Infrastructure API to insert and update DNS records in the DNS zone. Create a credentials file named oci.yaml and populate with the following content:

   Code Block
   language bash
   auth: region: <region-identifier> tenancy: <tenancy-ocid> user: <user-ocid> key: | -----BEGIN RSA PRIVATE KEY----- <private-key> -----END RSA PRIVATE KEY----- fingerprint: <fingerprint> # Omit if there is not a password for the key passphrase: <passphrase> compartment: <compartment-ocid>

2. Create a Kubernetes secret named external-dns-config from the credentials file you just created.

kubectl create secret generic external-dns-config --from-file=oci.yaml -n uepe

3. Create a configuration file (for example, called external-dns-values.yaml and populate it with the following helm values:), and specify the name of the Kubernetes secret you just created.

oci:
  secretName: external-dns-config
provider: oci
policy: sync
domainFilters:
- <cluster_dns_zone_name from terraform output>
txtOwnerId: <cluster_dns_zone_ocid from terraform output>

4. Create a configuration file (for example, called external-dns-deployment.yaml) to create the ExternalDNS deployment, and specify the name of the Kubernetes secret you just created.

apiVersion: v1
kind: ServiceAccount
metadata:
  name: external-dns
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: external-dns
rules:
- apiGroups: [""]
  resources: ["services","endpoints","pods"]
  verbs: ["get","watch","list"]
- apiGroups: ["extensions","networking.k8s.io"]
  resources: ["ingresses"]
  verbs: ["get","watch","list"]
- apiGroups: [""]
  resources: ["nodes"]
  verbs: ["list"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: external-dns-viewer
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: external-dns
subjects:
- kind: ServiceAccount
  name: external-dns
  namespace: uepe
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: external-dns
spec:
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: external-dns
  template:
    metadata:
      labels:
        app: external-dns
    spec:
      serviceAccountName: external-dns
      containers:
      - name: external-dns
        image: k8s.gcr.io/external-dns/external-dns:v0.13.4
        args:
        - --source=service
        - --source=ingress
        - --provider=oci
        - --txt-owner-id=<cluster_dns_zone_ocid from terraform output>
        volumeMounts:
          - name: config
            mountPath: /etc/kubernetes/
      volumes:
      - name: config
        secret:
          secretName: external-dns-config

4. Apply the configuration file to deploy ExternalDNS

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4. Add the bitnami helm repository:

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

5. Update the helm repository to get the latest software:

helm repo update

6. Perform helm install with the yaml file external-dns-values.yaml to deploy ExternalDNS

helm install external-dns bitnami/external-dns -f external-dns-deploymentvalues.yaml -n uepe

5. Confirm that external-dns has been installed successfully

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