--- - name: check resolvconf shell: which resolvconf register: resolvconf failed_when: false changed_when: false - set_fact: resolvconf: >- {%- if resolvconf.rc == 0 -%}true{%- else -%}false{%- endif -%} - set_fact: bogus_domains: |- {% for d in [ 'default.svc.' + dns_domain, 'svc.' + dns_domain ] + searchdomains|default([]) -%} {{dns_domain}}.{{d}}./{{d}}.{{d}}./com.{{d}}./ {%- endfor %} default_resolver: >- {%- if cloud_provider is defined and cloud_provider == 'gce' -%}169.254.169.254{%- else -%}8.8.8.8{%- endif -%} - name: check kubelet stat: path: "{{ bin_dir }}/kubelet" register: kubelet changed_when: false - name: check if early DNS configuration stage set_fact: dns_early: >- {%- if kubelet.stat.exists -%}false{%- else -%}true{%- endif -%} - name: target resolv.conf files set_fact: resolvconffile: /etc/resolv.conf base: >- {%- if resolvconf|bool -%}/etc/resolvconf/resolv.conf.d/base{%- endif -%} head: >- {%- if resolvconf|bool -%}/etc/resolvconf/resolv.conf.d/head{%- endif -%} when: not ansible_os_family in ["CoreOS", "Container Linux by CoreOS"] - name: target temporary resolvconf cloud init file (Container Linux by CoreOS) set_fact: resolvconffile=/tmp/resolveconf_cloud_init_conf when: ansible_os_family in ["CoreOS", "Container Linux by CoreOS"] - name: target dhclient conf/hook files for Red Hat family set_fact: dhclientconffile: /etc/dhclient.conf dhclienthookfile: /etc/dhcp/dhclient.d/zdnsupdate.sh when: ansible_os_family == "RedHat" - name: target dhclient conf/hook files for Debian family set_fact: dhclientconffile: /etc/dhcp/dhclient.conf dhclienthookfile: /etc/dhcp/dhclient-exit-hooks.d/zdnsupdate when: ansible_os_family == "Debian" - name: generate search domains to resolvconf set_fact: searchentries: search {{ ([ 'default.svc.' + dns_domain, 'svc.' + dns_domain ] + searchdomains|default([])) | join(' ') }} domainentry: domain {{ dns_domain }} supersede_search: supersede domain-search "{{ ([ 'default.svc.' + dns_domain, 'svc.' + dns_domain ] + searchdomains|default([])) | join('", "') }}"; supersede_domain: supersede domain-name "{{ dns_domain }}"; - name: pick dnsmasq cluster IP or default resolver set_fact: dnsmasq_server: |- {%- if dns_mode == 'kubedns' and not dns_early|bool -%} {{ [ skydns_server ] + upstream_dns_servers|default([]) }} {%- elif dns_early|bool -%} {{ upstream_dns_servers|default([]) }} {%- else -%} {{ [ dns_server ] }} {%- endif -%} - name: generate nameservers to resolvconf set_fact: nameserverentries: nameserver {{( dnsmasq_server + nameservers|default([default_resolver])) | join(',nameserver ')}} supersede_nameserver: supersede domain-name-servers {{( dnsmasq_server + nameservers|default([default_resolver])) | join(', ') }};