Oracle Exam 1Z0-1084-21 Topic 8 Question 1 Discussion

Setting up ExternalDNS for Oracle Cloud Infrastructure (OCI):

Inspired byKubernetes DNS, Kubernetes' cluster-internal DNS server, ExternalDNS makes Kubernetes resources discoverable via public DNS servers. Like KubeDNS, it retrieves a list of resources (Services, Ingresses, etc.) from theKubernetes APIto determine a desired list of DNS records.

In a broader sense,ExternalDNSallows you tocontrol DNS records dynamically via Kubernetes resources in a DNS provider-agnostic way

Deploy ExternalDNS

Connect yourkubectlclient to the cluster you want to test ExternalDNS with. We first need to create a config file containing the information needed to connect with the OCI API.

Create a new file (oci.yaml) and modify the contents to match the example below. Be sure to adjust the values to match your own credentials:

auth:

region: us-phoenix-1

tenancy: ocid1.tenancy.oc1...

user: ocid1.user.oc1...

key: |

-----BEGIN RSA PRIVATE KEY-----

-----END RSA PRIVATE KEY-----

fingerprint: af:81:71:8e...

compartment: ocid1.compartment.oc1...

https://github.com/kubernetes-sigs/external-dns/blob/master/README.md

https://github.com/kubernetes-sigs/external-dns/blob/master/docs/tutorials/oracle.md