update

kubespray/roles/kubernetes/preinstall/tasks/0060-resolvconf.yml

@@ -0,0 +1,58 @@
+---
+- name: create temporary resolveconf cloud init file
+  command: cp -f /etc/resolv.conf "{{ resolvconffile }}"
+  when: ansible_os_family in ["Flatcar", "Flatcar Container Linux by Kinvolk"]
+
+- name: Add domain/search/nameservers/options to resolv.conf
+  blockinfile:
+    path: "{{ resolvconffile }}"
+    block: |-
+      {% for item in [domainentry] + [searchentries] -%}
+      {{ item }}
+      {% endfor %}
+      {% for item in nameserverentries.split(',') %}
+      nameserver {{ item }}
+      {% endfor %}
+      options ndots:{{ ndots }} timeout:{{ dns_timeout|default('2') }} attempts:{{ dns_attempts|default('2') }}
+    state: present
+    insertbefore: BOF
+    create: yes
+    backup: "{{ not resolvconf_stat.stat.islnk }}"
+    marker: "# Ansible entries {mark}"
+    mode: 0644
+  notify: Preinstall | propagate resolvconf to k8s components
+
+- name: Remove search/domain/nameserver options before block
+  replace:
+    path: "{{ item[0] }}"
+    regexp: '^{{ item[1] }}[^#]*(?=# Ansible entries BEGIN)'
+    backup: "{{ not resolvconf_stat.stat.islnk }}"
+  with_nested:
+    - "{{ [resolvconffile, base|default(''), head|default('')] | difference(['']) }}"
+    - [ 'search\s', 'nameserver\s', 'domain\s', 'options\s' ]
+  notify: Preinstall | propagate resolvconf to k8s components
+
+- name: Remove search/domain/nameserver options after block
+  replace:
+    path: "{{ item[0] }}"
+    regexp: '(# Ansible entries END\n(?:(?!^{{ item[1] }}).*\n)*)(?:^{{ item[1] }}.*\n?)+'
+    replace: '\1'
+    backup: "{{ not resolvconf_stat.stat.islnk }}"
+  with_nested:
+    - "{{ [resolvconffile, base|default(''), head|default('')] | difference(['']) }}"
+    - [ 'search\s', 'nameserver\s', 'domain\s', 'options\s' ]
+  notify: Preinstall | propagate resolvconf to k8s components
+
+- name: get temporary resolveconf cloud init file content
+  command: cat {{ resolvconffile }}
+  register: cloud_config
+  when: ansible_os_family in ["Flatcar", "Flatcar Container Linux by Kinvolk"]
+
+- name: persist resolvconf cloud init file
+  template:
+    dest: "{{ resolveconf_cloud_init_conf }}"
+    src: resolvconf.j2
+    owner: root
+    mode: 0644
+  notify: Preinstall | update resolvconf for Flatcar Container Linux by Kinvolk
+  when: ansible_os_family in ["Flatcar", "Flatcar Container Linux by Kinvolk"]