k8s-sig-cluster-lifecycleawskubesprayhigh-availabilityansiblekubernetes-clustergcekubernetesbare-metal
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99 lines
3.4 KiB
99 lines
3.4 KiB
---
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- name: check resolvconf
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shell: which resolvconf
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register: resolvconf
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failed_when: false
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changed_when: false
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- set_fact:
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resolvconf: >-
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{%- if resolvconf.rc == 0 -%}true{%- else -%}false{%- endif -%}
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- set_fact:
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bogus_domains: |-
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{% for d in [ 'default.svc.' + dns_domain, 'svc.' + dns_domain ] + searchdomains|default([]) -%}
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{{dns_domain}}.{{d}}./{{d}}.{{d}}./com.{{d}}./
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{%- endfor %}
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default_resolver: >-
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{%- if cloud_provider is defined and cloud_provider == 'gce' -%}169.254.169.254{%- else -%}8.8.8.8{%- endif -%}
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- name: check if kubelet is configured
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stat:
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path: "{{ kube_config_dir }}/kubelet.env"
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register: kubelet_configured
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changed_when: false
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- name: check if early DNS configuration stage
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set_fact:
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dns_early: >-
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{%- if kubelet_configured.stat.exists -%}false{%- else -%}true{%- endif -%}
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- name: target resolv.conf files
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set_fact:
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resolvconffile: /etc/resolv.conf
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base: >-
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{%- if resolvconf|bool -%}/etc/resolvconf/resolv.conf.d/base{%- endif -%}
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head: >-
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{%- if resolvconf|bool -%}/etc/resolvconf/resolv.conf.d/head{%- endif -%}
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when: not ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]
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- name: target temporary resolvconf cloud init file (Container Linux by CoreOS)
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set_fact: resolvconffile=/tmp/resolveconf_cloud_init_conf
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when: ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]
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- name: check if /etc/dhclient.conf exists
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stat: path=/etc/dhclient.conf
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register: dhclient_stat
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- name: target dhclient conf file for /etc/dhclient.conf
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set_fact:
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dhclientconffile: /etc/dhclient.conf
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when: dhclient_stat.stat.exists
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- name: check if /etc/dhcp/dhclient.conf exists
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stat: path=/etc/dhcp/dhclient.conf
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register: dhcp_dhclient_stat
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- name: target dhclient conf file for /etc/dhcp/dhclient.conf
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set_fact:
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dhclientconffile: /etc/dhcp/dhclient.conf
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when: dhcp_dhclient_stat.stat.exists
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- name: target dhclient hook file for Red Hat family
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set_fact:
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dhclienthookfile: /etc/dhcp/dhclient.d/zdnsupdate.sh
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when: ansible_os_family == "RedHat"
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- name: target dhclient hook file for Debian family
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set_fact:
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dhclienthookfile: /etc/dhcp/dhclient-exit-hooks.d/zdnsupdate
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when: ansible_os_family == "Debian"
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- name: generate search domains to resolvconf
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set_fact:
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searchentries:
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search {{ ([ 'default.svc.' + dns_domain, 'svc.' + dns_domain ] + searchdomains|default([])) | join(' ') }}
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domainentry:
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domain {{ dns_domain }}
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supersede_search:
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supersede domain-search "{{ ([ 'default.svc.' + dns_domain, 'svc.' + dns_domain ] + searchdomains|default([])) | join('", "') }}";
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supersede_domain:
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supersede domain-name "{{ dns_domain }}";
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- name: pick dnsmasq cluster IP or default resolver
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set_fact:
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dnsmasq_server: |-
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{%- if dns_mode == 'kubedns' and not dns_early|bool -%}
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{{ [ skydns_server ] + upstream_dns_servers|default([]) }}
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{%- elif dns_early|bool -%}
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{{ upstream_dns_servers|default([]) }}
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{%- else -%}
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{{ [ dns_server ] }}
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{%- endif -%}
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- name: generate nameservers to resolvconf
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set_fact:
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nameserverentries:
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nameserver {{( dnsmasq_server + nameservers|default([default_resolver])) | join(',nameserver ')}}
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supersede_nameserver:
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supersede domain-name-servers {{( dnsmasq_server + nameservers|default([default_resolver])) | join(', ') }};
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