--- - name: Set os_family fact for other redhat-based operating systems set_fact: ansible_os_family: "RedHat" ansible_distribution_major_version: "8" when: ansible_distribution in redhat_os_family_extensions tags: - facts - name: Check resolvconf command: which resolvconf register: resolvconf failed_when: false changed_when: false check_mode: no - name: Check existence of /etc/resolvconf/resolv.conf.d stat: path: /etc/resolvconf/resolv.conf.d get_attributes: no get_checksum: no get_mime: no failed_when: false register: resolvconfd_path - name: Check status of /etc/resolv.conf stat: path: /etc/resolv.conf follow: no get_attributes: no get_checksum: no get_mime: no failed_when: false register: resolvconf_stat - name: Fetch resolconf when: resolvconf_stat.stat.exists is defined and resolvconf_stat.stat.exists block: - name: Get content of /etc/resolv.conf slurp: src: /etc/resolv.conf register: resolvconf_slurp - name: Get currently configured nameservers set_fact: configured_nameservers: "{{ resolvconf_slurp.content | b64decode | regex_findall('^nameserver\\s*(\\S*)', multiline=True) | ansible.utils.ipaddr }}" when: resolvconf_slurp.content is defined - name: Stop if /etc/resolv.conf not configured nameservers assert: that: configured_nameservers | length>0 fail_msg: "nameserver should not empty in /etc/resolv.conf" when: - not ignore_assert_errors - configured_nameservers is defined - not (upstream_dns_servers is defined and upstream_dns_servers | length > 0) - not (disable_host_nameservers | default(false)) - dns_mode in ['coredns', 'coredns_dual'] - name: NetworkManager | Check if host has NetworkManager # noqa command-instead-of-module - Should we use service_facts for this? command: systemctl is-active --quiet NetworkManager.service register: networkmanager_enabled failed_when: false changed_when: false check_mode: false - name: Check systemd-resolved # noqa command-instead-of-module - Should we use service_facts for this? command: systemctl is-active systemd-resolved register: systemd_resolved_enabled failed_when: false changed_when: false check_mode: no - name: Set default dns if remove_default_searchdomains is false set_fact: default_searchdomains: ["default.svc.{{ dns_domain }}", "svc.{{ dns_domain }}"] when: not remove_default_searchdomains | default() | bool or (remove_default_searchdomains | default() | bool and searchdomains | default([]) | length==0) - name: Set dns facts set_fact: resolvconf: >- {%- if resolvconf.rc == 0 and resolvconfd_path.stat.isdir is defined and resolvconfd_path.stat.isdir -%}true{%- else -%}false{%- endif -%} bogus_domains: |- {% for d in default_searchdomains | default([]) + searchdomains | default([]) -%} {{ dns_domain }}.{{ d }}./{{ d }}.{{ d }}./com.{{ d }}./ {%- endfor %} cloud_resolver: "{{ ['169.254.169.254'] if cloud_provider is defined and cloud_provider == 'gce' else ['169.254.169.253'] if cloud_provider is defined and cloud_provider == 'aws' else [] }}" - name: Check if kubelet is configured stat: path: "{{ kube_config_dir }}/kubelet.env" get_attributes: no get_checksum: no get_mime: no register: kubelet_configured changed_when: false - name: Check if early DNS configuration stage set_fact: dns_early: "{{ not kubelet_configured.stat.exists }}" - 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 ["Flatcar", "Flatcar Container Linux by Kinvolk"] and not is_fedora_coreos - name: Target temporary resolvconf cloud init file (Flatcar Container Linux by Kinvolk / Fedora CoreOS) set_fact: resolvconffile: /tmp/resolveconf_cloud_init_conf when: ansible_os_family in ["Flatcar", "Flatcar Container Linux by Kinvolk"] or is_fedora_coreos - name: Check if /etc/dhclient.conf exists stat: path: /etc/dhclient.conf get_attributes: no get_checksum: no get_mime: no register: dhclient_stat - name: Target dhclient conf file for /etc/dhclient.conf set_fact: dhclientconffile: /etc/dhclient.conf when: dhclient_stat.stat.exists - name: Check if /etc/dhcp/dhclient.conf exists stat: path: /etc/dhcp/dhclient.conf get_attributes: no get_checksum: no get_mime: no register: dhcp_dhclient_stat - name: Target dhclient conf file for /etc/dhcp/dhclient.conf set_fact: dhclientconffile: /etc/dhcp/dhclient.conf when: dhcp_dhclient_stat.stat.exists - name: Target dhclient hook file for Red Hat family set_fact: dhclienthookfile: /etc/dhcp/dhclient.d/zdnsupdate.sh when: ansible_os_family == "RedHat" - name: Target dhclient hook file for Debian family set_fact: dhclienthookfile: /etc/dhcp/dhclient-exit-hooks.d/zdnsupdate when: ansible_os_family == "Debian" - name: Generate search domains to resolvconf set_fact: searchentries: search {{ (default_searchdomains | default([]) + searchdomains | default([])) | join(' ') }} domainentry: domain {{ dns_domain }} supersede_search: supersede domain-search "{{ (default_searchdomains | default([]) + searchdomains | default([])) | join('", "') }}"; supersede_domain: supersede domain-name "{{ dns_domain }}"; - name: Pick coredns cluster IP or default resolver set_fact: coredns_server: |- {%- if dns_mode == 'coredns' and not dns_early | bool -%} {{ [skydns_server] }} {%- elif dns_mode == 'coredns_dual' and not dns_early | bool -%} {{ [skydns_server] + [skydns_server_secondary] }} {%- elif dns_mode == 'manual' and not dns_early | bool -%} {{ (manual_dns_server.split(',') | list) }} {%- elif dns_mode == 'none' and not dns_early | bool -%} [] {%- elif dns_early | bool -%} {{ upstream_dns_servers | default([]) }} {%- endif -%} # This task should only run after cluster/nodelocal DNS is up, otherwise all DNS lookups will timeout - name: Generate nameservers for resolvconf, including cluster DNS set_fact: nameserverentries: |- {{ (([nodelocaldns_ip] if enable_nodelocaldns else []) + (coredns_server | d([]) if not enable_nodelocaldns else []) + nameservers | d([]) + cloud_resolver | d([]) + (configured_nameservers | d([]) if not disable_host_nameservers | d() | bool else [])) | unique | join(',') }} supersede_nameserver: supersede domain-name-servers {{ (([nodelocaldns_ip] if enable_nodelocaldns else []) + (coredns_server | d([]) if not enable_nodelocaldns else []) + nameservers | d([]) + cloud_resolver | d([]) + (configured_nameservers | d([]) if not disable_host_nameservers | d() | bool else [])) | unique | join(', ') }}; when: not dns_early or dns_late # This task should run instead of the above task when cluster/nodelocal DNS hasn't # been deployed yet (like scale.yml/cluster.yml) or when it's down (reset.yml) - name: Generate nameservers for resolvconf, not including cluster DNS set_fact: nameserverentries: |- {{ (nameservers | d([]) + cloud_resolver | d([]) + configured_nameservers | d([])) | unique | join(',') }} supersede_nameserver: supersede domain-name-servers {{ (nameservers | d([]) + cloud_resolver | d([])) | unique | join(', ') }}; when: dns_early and not dns_late - name: Gather os specific variables include_vars: "{{ item }}" with_first_found: - files: - "{{ ansible_distribution | lower }}-{{ ansible_distribution_version | lower | replace('/', '_') }}.yml" - "{{ ansible_distribution | lower }}-{{ ansible_distribution_release }}.yml" - "{{ ansible_distribution | lower }}-{{ ansible_distribution_major_version | lower | replace('/', '_') }}.yml" - "{{ ansible_distribution | lower }}.yml" - "{{ ansible_os_family | lower }}.yml" - defaults.yml paths: - ../vars skip: true - name: Set etcd vars if using kubeadm mode set_fact: etcd_cert_dir: "{{ kube_cert_dir }}" kube_etcd_cacert_file: "etcd/ca.crt" kube_etcd_cert_file: "apiserver-etcd-client.crt" kube_etcd_key_file: "apiserver-etcd-client.key" when: - etcd_deployment_type == "kubeadm" - name: Check /usr readonly stat: path: "/usr" get_attributes: no get_checksum: no get_mime: no register: usr - name: Set alternate flexvolume path set_fact: kubelet_flexvolumes_plugins_dir: /var/lib/kubelet/volumeplugins when: not usr.stat.writeable