kubespray/roles/dnsmasq/tasks/main.yml

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---
- name: populate inventory into hosts file
lineinfile:
dest: /etc/hosts
regexp: "^{{ hostvars[item].ansible_default_ipv4.address }} {{ item }}$"
line: "{{ hostvars[item].ansible_default_ipv4.address }} {{ item }}"
state: present
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backup: yes
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when: hostvars[item].ansible_default_ipv4.address is defined
with_items: groups['all']
- name: populate kubernetes loadbalancer address into hosts file
lineinfile:
dest: /etc/hosts
regexp: ".*{{ apiserver_loadbalancer_domain_name }}$"
line: "{{ loadbalancer_apiserver.address }} lb-apiserver.kubernetes.local"
state: present
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backup: yes
when: loadbalancer_apiserver is defined and apiserver_loadbalancer_domain_name is defined
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- name: clean hosts file
lineinfile:
dest: /etc/hosts
regexp: "{{ item }}"
state: absent
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backup: yes
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with_items:
- '^127\.0\.0\.1(\s+){{ inventory_hostname }}.*'
- '^::1(\s+){{ inventory_hostname }}.*'
- name: ensure dnsmasq.d directory exists
file:
path: /etc/dnsmasq.d
state: directory
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when: inventory_hostname in groups['kube-master']
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- name: Write dnsmasq configuration
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template:
src: 01-kube-dns.conf.j2
dest: /etc/dnsmasq.d/01-kube-dns.conf
mode: 755
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backup: yes
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when: inventory_hostname in groups['kube-master']
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- name: Create dnsmasq pod manifest
template: src=dnsmasq-pod.yml dest=/etc/kubernetes/manifests/dnsmasq-pod.manifest
when: inventory_hostname in groups['kube-master']
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- name: Check for dnsmasq port (pulling image and running container)
wait_for:
port: 53
delay: 5
when: inventory_hostname in groups['kube-master']
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- name: check resolvconf
stat: path=/etc/resolvconf/resolv.conf.d/head
register: resolvconf
- name: target resolv.conf file
set_fact:
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resolvconffile: >-
{%- if resolvconf.stat.exists == True -%}/etc/resolvconf/resolv.conf.d/head{%- else -%}/etc/resolv.conf{%- endif -%}
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- name: Add search resolv.conf
lineinfile:
line: search {{ [ 'default.svc.' + dns_domain, 'svc.' + dns_domain, dns_domain ] | join(' ') }}
dest: "{{resolvconffile}}"
state: present
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insertbefore: BOF
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backup: yes
follow: yes
- name: Add all masters as nameserver
lineinfile:
line: nameserver {{ hostvars[item]['ansible_default_ipv4']['address'] }}
dest: "{{resolvconffile}}"
state: present
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insertafter: "^search.*$"
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backup: yes
follow: yes
with_items: groups['kube-master']
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- name: disable resolv.conf modification by dhclient
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copy: src=dhclient_nodnsupdate dest=/etc/dhcp/dhclient-enter-hooks.d/nodnsupdate mode=u+x backup=yes
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when: ansible_os_family == "Debian"
- name: disable resolv.conf modification by dhclient
copy: src=dhclient_nodnsupdate dest=/etc/dhcp/dhclient.d/nodnsupdate mode=u+x backup=yes
when: ansible_os_family == "RedHat"
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- name: update resolvconf
command: resolvconf -u
changed_when: False
when: resolvconf.stat.exists == True
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- meta: flush_handlers