--- - name: kubeadm | Check if old apiserver cert exists on host stat: path: "{{ kube_cert_dir }}/apiserver.pem" register: old_apiserver_cert delegate_to: "{{ groups['kube-master'] | first }}" run_once: true - name: kubeadm | Migrate old certs if necessary import_tasks: kubeadm-migrate-certs.yml when: old_apiserver_cert.stat.exists - name: Install OIDC certificate copy: content: "{{ kube_oidc_ca_cert | b64decode }}" dest: "{{ kube_oidc_ca_file }}" owner: root group: root mode: "0644" when: - kube_oidc_auth - kube_oidc_ca_cert is defined - name: kubeadm | Check serviceaccount key stat: path: "{{ kube_cert_dir }}/sa.key" register: sa_key_before run_once: true - name: kubeadm | Check if kubeadm has already run stat: path: "/var/lib/kubelet/config.yaml" register: kubeadm_already_run - name: kubeadm | Delete old admin.conf file: path: "{{ kube_config_dir }}/admin.conf" state: absent when: - not kubeadm_already_run.stat.exists - name: kubeadm | Delete old static pods file: path: "{{ kube_config_dir }}/manifests/{{ item }}.manifest" state: absent with_items: ["kube-apiserver", "kube-controller-manager", "kube-scheduler", "kube-proxy"] when: - old_apiserver_cert.stat.exists - name: kubeadm | Forcefully delete old static pods shell: "docker ps -f name=k8s_{{ item }} -q | xargs --no-run-if-empty docker rm -f" with_items: ["kube-apiserver", "kube-controller-manager", "kube-scheduler"] when: - old_apiserver_cert.stat.exists - name: kubeadm | aggregate all SANs set_fact: apiserver_sans: "{{ (sans_base + groups['kube-master'] + sans_lb + sans_lb_ip + sans_supp + sans_access_ip + sans_ip + sans_address + sans_override + sans_hostname + sans_fqdn) | unique }}" vars: sans_base: - "kubernetes" - "kubernetes.default" - "kubernetes.default.svc" - "kubernetes.default.svc.{{ dns_domain }}" - "{{ kube_apiserver_ip }}" - "localhost" - "127.0.0.1" sans_lb: "{{ [apiserver_loadbalancer_domain_name] if apiserver_loadbalancer_domain_name is defined else [] }}" sans_lb_ip: "{{ [loadbalancer_apiserver.address] if loadbalancer_apiserver is defined and loadbalancer_apiserver.address is defined else [] }}" sans_supp: "{{ supplementary_addresses_in_ssl_keys if supplementary_addresses_in_ssl_keys is defined else [] }}" sans_access_ip: "{{ groups['kube-master'] | map('extract', hostvars, 'access_ip') | list | select('defined') | list }}" sans_ip: "{{ groups['kube-master'] | map('extract', hostvars, 'ip') | list | select('defined') | list }}" sans_address: "{{ groups['kube-master'] | map('extract', hostvars, ['ansible_default_ipv4', 'address']) | list | select('defined') | list }}" sans_override: "{{ [kube_override_hostname] if kube_override_hostname else [] }}" sans_hostname: "{{ groups['kube-master'] | map('extract', hostvars, ['ansible_hostname']) | list | select('defined') | list }}" sans_fqdn: "{{ groups['kube-master'] | map('extract', hostvars, ['ansible_fqdn']) | list | select('defined') | list }}" tags: facts - name: Create audit-policy directory file: path: "{{ audit_policy_file | dirname }}" state: directory when: kubernetes_audit|default(false) or kubernetes_audit_webhook|default(false) - name: Write api audit policy yaml template: src: apiserver-audit-policy.yaml.j2 dest: "{{ audit_policy_file }}" when: kubernetes_audit|default(false) or kubernetes_audit_webhook|default(false) - name: Write api audit webhook config yaml template: src: apiserver-audit-webhook-config.yaml.j2 dest: "{{ audit_webhook_config_file }}" when: kubernetes_audit_webhook|default(false) # Nginx LB(default), If kubeadm_config_api_fqdn is defined, use other LB by kubeadm controlPlaneEndpoint. - name: set kubeadm_config_api_fqdn define set_fact: kubeadm_config_api_fqdn: "{{ apiserver_loadbalancer_domain_name|default('lb-apiserver.kubernetes.local') }}" when: loadbalancer_apiserver is defined - name: kubeadm | set kubeadm version import_tasks: kubeadm-version.yml - name: kubeadm | Certificate management with kubeadm import_tasks: kubeadm-certificate.yml when: - not upgrade_cluster_setup - kubeadm_already_run.stat.exists - name: kubeadm | Check if apiserver.crt contains all needed SANs command: openssl x509 -noout -in "{{ kube_cert_dir }}/apiserver.crt" -checkip "{{ item }}" with_items: "{{ apiserver_sans }}" register: apiserver_sans_check changed_when: "'does match certificate' not in apiserver_sans_check.stdout" when: - inventory_hostname == groups['kube-master']|first - kubeadm_already_run.stat.exists - name: kubeadm | regenerate apiserver cert 1/2 file: state: absent path: "{{ kube_cert_dir }}/{{ item }}" with_items: - apiserver.crt - apiserver.key when: - inventory_hostname == groups['kube-master']|first - kubeadm_already_run.stat.exists - apiserver_sans_check.changed - name: kubeadm | regenerate apiserver cert 2/2 command: >- {{ bin_dir }}/kubeadm init phase certs apiserver --config={{ kube_config_dir }}/kubeadm-config.yaml when: - inventory_hostname == groups['kube-master']|first - kubeadm_already_run.stat.exists - apiserver_sans_check.changed - name: kubeadm | Initialize first master command: >- timeout -k 300s 300s {{ bin_dir }}/kubeadm init --config={{ kube_config_dir }}/kubeadm-config.yaml --ignore-preflight-errors=all --skip-phases=addon/coredns --upload-certs register: kubeadm_init # Retry is because upload config sometimes fails retries: 3 until: kubeadm_init is succeeded or "field is immutable" in kubeadm_init.stderr when: inventory_hostname == groups['kube-master']|first and not kubeadm_already_run.stat.exists failed_when: kubeadm_init.rc != 0 and "field is immutable" not in kubeadm_init.stderr environment: PATH: "{{ bin_dir }}:{{ ansible_env.PATH }}" notify: Master | restart kubelet - name: set kubeadm certificate key set_fact: kubeadm_certificate_key: "{{ item | regex_search('--certificate-key ([^ ]+)','\\1') | first }}" with_items: "{{ hostvars[groups['kube-master'][0]]['kubeadm_init'].stdout_lines | default([]) }}" when: - kubeadm_certificate_key is not defined - (item | trim) is match('.*--certificate-key.*') - name: Create hardcoded kubeadm token for joining nodes with 24h expiration (if defined) shell: >- {{ bin_dir }}/kubeadm --kubeconfig /etc/kubernetes/admin.conf token delete {{ kubeadm_token }} || :; {{ bin_dir }}/kubeadm --kubeconfig /etc/kubernetes/admin.conf token create {{ kubeadm_token }} changed_when: false when: - inventory_hostname == groups['kube-master']|first - kubeadm_token is defined - kubeadm_refresh_token tags: - kubeadm_token - name: Create kubeadm token for joining nodes with 24h expiration (default) command: "{{ bin_dir }}/kubeadm --kubeconfig /etc/kubernetes/admin.conf token create" changed_when: false register: temp_token retries: 5 delay: 5 until: temp_token is succeeded delegate_to: "{{ groups['kube-master'] | first }}" when: kubeadm_token is not defined tags: - kubeadm_token - name: Set kubeadm_token set_fact: kubeadm_token: "{{ temp_token.stdout }}" when: temp_token.stdout is defined tags: - kubeadm_token - name: kubeadm | Initialize other masters (experimental control plane) include_tasks: kubeadm-secondary-experimental.yml when: kubeadm_control_plane - name: kubeadm | Initialize other masters (legacy not control plane) include_tasks: kubeadm-secondary-legacy.yml when: not kubeadm_control_plane - name: kubeadm | upgrade kubernetes cluster include_tasks: kubeadm-upgrade.yml when: - upgrade_cluster_setup - kubeadm_already_run.stat.exists - name: kubeadm | Check serviceaccount key again stat: path: "{{ kube_cert_dir }}/sa.key" register: sa_key_after run_once: true - name: kubeadm | Set secret_changed if service account key was updated command: /bin/true notify: Master | set secret_changed when: sa_key_before.stat.checksum|default("") != sa_key_after.stat.checksum - name: kubeadm | cleanup old certs if necessary import_tasks: kubeadm-cleanup-old-certs.yml when: - old_apiserver_cert.stat.exists # FIXME(mattymo): from docs: If you don't want to taint your control-plane node, set this field to an empty slice, i.e. `taints: {}` in the YAML file. - name: kubeadm | Remove taint for master with node role command: "{{ bin_dir }}/kubectl --kubeconfig {{ kube_config_dir }}/admin.conf taint node {{ inventory_hostname }} node-role.kubernetes.io/master:NoSchedule-" delegate_to: "{{ groups['kube-master'] | first }}" when: inventory_hostname in groups['kube-node'] failed_when: false