kubespray/roles/kubernetes/preinstall/tasks/0063-networkmanager-dns.yml

---
- name: NetworkManager | Add nameservers to NM configuration
  community.general.ini_file:
    path: /etc/NetworkManager/conf.d/dns.conf
    section: global-dns-domain-*
    option: servers
    value: "{{ nameserverentries }}"
    mode: '0600'
    backup: true
  when:
    - nameserverentries != "127.0.0.53" or systemd_resolved_enabled.rc != 0
  notify: Preinstall | update resolvconf for networkmanager

- name: Set default dns if remove_default_searchdomains is false
  set_fact:
    default_searchdomains: ["default.svc.{{ dns_domain }}", "svc.{{ dns_domain }}"]
  when: not remove_default_searchdomains | default() | bool or (remove_default_searchdomains | default() | bool and searchdomains | default([]) | length==0)

- name: NetworkManager | Add DNS search to NM configuration
  community.general.ini_file:
    path: /etc/NetworkManager/conf.d/dns.conf
    section: global-dns
    option: searches
    value: "{{ (default_searchdomains | default([]) + searchdomains | default([])) | join(',') }}"
    mode: '0600'
    backup: true
  notify: Preinstall | update resolvconf for networkmanager

- name: NetworkManager | Add DNS options to NM configuration
  community.general.ini_file:
    path: /etc/NetworkManager/conf.d/dns.conf
    section: global-dns
    option: options
    value: "ndots:{{ ndots }},timeout:{{ dns_timeout | default('2') }},attempts:{{ dns_attempts | default('2') }}"
    mode: '0600'
    backup: true
  notify: Preinstall | update resolvconf for networkmanager