kubespray/roles/kubernetes-apps/ansible/tasks/cleanup_dns.yml

---
- name: Kubernetes Apps | Delete old CoreDNS resources
  kube:
    name: "coredns"
    namespace: "kube-system"
    kubectl: "{{ bin_dir }}/kubectl"
    resource: "{{ item }}"
    state: absent
  with_items:
    - 'deploy'
    - 'configmap'
    - 'svc'
  tags:
    - upgrade

- name: Kubernetes Apps | Delete kubeadm CoreDNS
  kube:
    name: "coredns"
    namespace: "kube-system"
    kubectl: "{{ bin_dir }}/kubectl"
    resource: "deploy"
    state: absent
  when:
    - kubeadm_enabled|default(false)
    - kubeadm_init.changed|default(false)
    - inventory_hostname == groups['kube-master'][0]

- name: Kubernetes Apps | Delete old KubeDNS resources
  kube:
    name: "kube-dns"
    namespace: "kube-system"
    kubectl: "{{ bin_dir }}/kubectl"
    resource: "{{ item }}"
    state: absent
  with_items:
    - 'deploy'
    - 'svc'
  tags:
    - upgrade

- name: Kubernetes Apps | Delete kubeadm KubeDNS
  kube:
    name: "kube-dns"
    namespace: "kube-system"
    kubectl: "{{ bin_dir }}/kubectl"
    resource: "{{ item }}"
    state: absent
  with_items:
    - 'deploy'
    - 'svc'
  when:
    - kubeadm_enabled|default(false)
    - kubeadm_init.changed|default(false)
    - inventory_hostname == groups['kube-master'][0]