c12s-kubespray/roles/kubernetes/preinstall/tasks/0060-resolvconf.yml

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---
- name: create temporary resolveconf cloud init file
command: cp -f /etc/resolv.conf "{{ resolvconffile }}"
when: ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk"]
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- name: Add domain/search/nameservers/options to resolv.conf
blockinfile:
path: "{{ resolvconffile }}"
block: |-
{% for item in [domainentry] + [searchentries] + nameserverentries.split(',') -%}
{{ item }}
{% endfor %}
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options ndots:{{ ndots }}
options timeout:2
options attempts:2
state: present
insertbefore: BOF
create: yes
backup: yes
marker: "# Ansible entries {mark}"
notify: Preinstall | propagate resolvconf to k8s components
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- name: Remove search/domain/nameserver options before block
replace:
dest: "{{ item[0] }}"
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regexp: '^{{ item[1] }}[^#]*(?=# Ansible entries BEGIN)'
backup: yes
follow: yes
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with_nested:
- "{{ [resolvconffile, base|default(''), head|default('')] | difference(['']) }}"
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- [ 'search ', 'nameserver ', 'domain ', 'options ' ]
notify: Preinstall | propagate resolvconf to k8s components
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- name: Remove search/domain/nameserver options after block
replace:
dest: "{{ item[0] }}"
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regexp: '(# Ansible entries END\n(?:(?!^{{ item[1] }}).*\n)*)(?:^{{ item[1] }}.*\n?)+'
replace: '\1'
backup: yes
follow: yes
with_nested:
- "{{ [resolvconffile, base|default(''), head|default('')] | difference(['']) }}"
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- [ 'search ', 'nameserver ', 'domain ', 'options ' ]
notify: Preinstall | propagate resolvconf to k8s components
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- name: get temporary resolveconf cloud init file content
command: cat {{ resolvconffile }}
register: cloud_config
when: ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "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 Container Linux by CoreOS and Flatcar
when: ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk"]