How to Re-deploy CoreDNS Pods Only to the Master Nodes.

Edit watch flag to false in clusteraddon of CoreDNS:

# kubectl edit clusteraddons -n default 91bc678c-7da5-41d0-be51-c295cd0a6453-coredns

# kubectl describe clusteraddons -n default 91bc678c-7da5-41d0-be51-c295cd0a6453-coredns

Name:         91bc678c-7da5-41d0-be51-c295cd0a6453-coredns

Namespace:    default

Labels:       sunpike.pf9.io/cluster=91bc678c-7da5-41d0-be51-c295cd0a6453

              type=coredns

Annotations:  <none>

API Version:  sunpike.platform9.com/v1alpha2

Kind:         ClusterAddon

Spec:

  Cluster ID:  91bc678c-7da5-41d0-be51-c295cd0a6453

  Override:

    Params:

      Name:   dnsMemoryLimit

      Value:  170Mi

      Name:   dnsDomain

      Value:  cluster.local

  Type:       coredns

  Version:    1.8.0

  Watch:      false   < ---------------------

nodeSelector:                                    

      node-role.kubernetes.io/master: ""            <--------- Add 

      priorityClassName: system-cluster-critical

      restartPolicy: Always

      schedulerName: default-scheduler

      securityContext: {}

      serviceAccount: coredns

      serviceAccountName: coredns

      terminationGracePeriodSeconds: 30

      tolerations:

      - key: CriticalAddonsOnly

        operator: Exists

      - effect: NoSchedule                            <--------- Add

        key: node-role.kubernetes.io/master           <--------- Add

        operator: Equal                               <--------- Add 

        value: "true"                                 <--------- Add