Bug 2059639

Description of problem:
On Openshift 4.9 openshift-dns service is created with internalTrafficPolicy set to Cluster and OVN doesn't seem to have the same fix we introduced in OpenshiftSDN to have sdn poins query the local dns pod endpoint instead of the dns-default service.

https://bugzilla.redhat.com/show_bug.cgi?id=1919737

The code seems to mention that this change will be removed once internalTrafficPolicy is implemented. Is the Cluster setting correctly or should we have service with internalTrafficPolicy set to Local?

If this setting on the service is not suppose to be changed to possible other bad side effects on the cluster, can we have a similar implementation on OVN like it looks we are suppose to be working on it from the same bugzilla mentioned above?

OpenShift release version:
OCP 4.9 with OVNKubernetes

Cluster Platform:
All

How reproducible:
Unknown

Steps to Reproduce (in detail):
Unknown


Impact of the problem:
Sporadic DNS failures.

Additional info:

 $ oc get svc dns-default -o yaml -n openshift-dns

apiVersion: v1
kind: Service
metadata:
  annotations:
    service.alpha.openshift.io/serving-cert-signed-by: openshift-service-serving-signer@1641922101
    service.beta.openshift.io/serving-cert-secret-name: dns-default-metrics-tls
    service.beta.openshift.io/serving-cert-signed-by: openshift-service-serving-signer@1641922101
  creationTimestamp: "2022-01-11T17:32:01Z"
  labels:
    dns.operator.openshift.io/owning-dns: default
  name: dns-default
  namespace: openshift-dns
  ownerReferences:
  - apiVersion: operator.openshift.io/v1
    controller: true
    kind: DNS
    name: default
    uid: 8397e280-d4f3-44a5-8a8f-a978bbdbaa7e
  resourceVersion: "10030"
  uid: ce8dcef3-7ba6-45c4-9ae2-c00f494e155c
spec:
  clusterIP: 172.32.0.10
  clusterIPs:
  - 172.32.0.10
  internalTrafficPolicy: Cluster
  ipFamilies:
  - IPv4
  ipFamilyPolicy: SingleStack
  ports:
  - name: dns
    port: 53
    protocol: UDP
    targetPort: dns
  - name: dns-tcp
    port: 53
    protocol: TCP
    targetPort: dns-tcp
  - name: metrics
    port: 9154
    protocol: TCP
    targetPort: metrics
  selector:
    dns.operator.openshift.io/daemonset-dns: default
  sessionAffinity: None
  type: ClusterIP
status:
  loadBalancer: {}