Initial commit

roles/dnsmasq/files/dhclient_nodnsupdate

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+#!/bin/sh
+make_resolv_conf() {
+    :
+}

roles/dnsmasq/handlers/main.yml

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+---
+- name: restart dnsmasq
+  command: systemctl restart dnsmasq

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
+  when: hostvars[item].ansible_default_ipv4.address is defined
+  with_items: groups['all']
+
+- name: clean hosts file
+  lineinfile:
+    dest: /etc/hosts
+    regexp: "{{ item }}"
+    state: absent
+  with_items:
+    - '^127\.0\.0\.1(\s+){{ inventory_hostname }}.*'
+    - '^::1(\s+){{ inventory_hostname }}.*'
+
+- name: install dnsmasq and bindr9utils
+  apt:
+    name: "{{ item }}"
+    state: present
+  with_items:
+    - dnsmasq
+    - bind9utils
+  when: inventory_hostname in groups['kube-master'][0]
+
+- name: ensure dnsmasq.d directory exists
+  file:
+    path: /etc/dnsmasq.d
+    state: directory
+  when: inventory_hostname in groups['kube-master'][0]
+
+- name: configure dnsmasq
+  template:
+    src: 01-kube-dns.conf.j2
+    dest: /etc/dnsmasq.d/01-kube-dns.conf
+    mode: 755
+  notify:
+    - restart dnsmasq
+  when: inventory_hostname in groups['kube-master'][0]
+
+- name: enable dnsmasq
+  service:
+    name: dnsmasq
+    state: started
+    enabled: yes
+  when: inventory_hostname in groups['kube-master'][0]
+
+- name: update resolv.conf with new DNS setup
+  template:
+    src: resolv.conf.j2
+    dest: /etc/resolv.conf
+    mode: 644
+
+- name: disable resolv.conf modification by dhclient
+  copy: src=dhclient_nodnsupdate dest=/etc/dhcp/dhclient-enter-hooks.d/nodnsupdate mode=u+x

roles/dnsmasq/templates/01-kube-dns.conf.j2

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+#Listen on all interfaces
+interface=*
+
+addn-hosts=/etc/hosts
+
+bogus-priv
+
+#Set upstream dns servers
+{% if upstream_dns_servers is defined %}
+{% for srv in upstream_dns_servers %}
+server={{ srv }}
+{% endfor %}
+{% else %}
+ server=8.8.8.8
+ server=8.8.4.4
+{% endif %}
+
+# Forward k8s domain to kube-dns
+server=/{{ dns_domain }}/{{ kube_dns_server }}

roles/dnsmasq/templates/resolv.conf.j2

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+; generated by ansible
+search {{ [ 'default.svc.' + dns_domain, 'svc.' + dns_domain, dns_domain ] | join(' ') }}
+{% for host in groups['kube-master'] %}
+nameserver {{ hostvars[host]['ansible_default_ipv4']['address'] }}
+{% endfor %}