--- - 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 | Check service account key stat: path: "{{ kube_cert_dir }}/sa.key" register: sa_key_before delegate_to: "{{groups['kube-master']|first}}" 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: >- kubernetes kubernetes.default kubernetes.default.svc kubernetes.default.svc.{{ dns_domain }} {{ kube_apiserver_ip }} localhost 127.0.0.1 {{ ' '.join(groups['kube-master']) }} {%- if loadbalancer_apiserver is defined %} {{ apiserver_loadbalancer_domain_name }} {%- endif %} {%- for host in groups['kube-master'] -%} {%- if hostvars[host]['access_ip'] is defined %}{{ hostvars[host]['access_ip'] }}{% endif %} {{ hostvars[host]['ip'] | default(hostvars[host]['ansible_default_ipv4']['address']) }} {%- endfor %} {%- if supplementary_addresses_in_ssl_keys is defined %} {%- for addr in supplementary_addresses_in_ssl_keys %} {{ addr }} {%- endfor %} {%- endif %} tags: facts - name: kubeadm | Copy etcd cert dir under k8s cert dir command: "cp -TR {{ etcd_cert_dir }} {{ kube_config_dir }}/ssl/etcd" changed_when: false - name: Create audit-policy directory file: path: "{{ audit_policy_file | dirname }}" state: directory when: kubernetes_audit|default(false) - name: Write api audit policy yaml template: src: apiserver-audit-policy.yaml.j2 dest: "{{ audit_policy_file }}" when: kubernetes_audit|default(false) - name: gets the kubeadm version command: "{{ bin_dir }}/kubeadm version -o short" register: kubeadm_output - name: sets kubeadm api version to v1alpha1 set_fact: kubeadmConfig_api_version: v1alpha1 when: kubeadm_output.stdout is version('v1.11.0', '<') - name: sets kubeadm api version to v1alpha2 set_fact: kubeadmConfig_api_version: v1alpha2 when: - kubeadm_output.stdout is version('v1.11.0', '>=') - kubeadm_output.stdout is version('v1.12.0', '<') - name: sets kubeadm api version to v1alpha3 set_fact: kubeadmConfig_api_version: v1alpha3 when: kubeadm_output.stdout is version('v1.12.0', '>=') # 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 | Create kubeadm config template: src: "kubeadm-config.{{ kubeadmConfig_api_version }}.yaml.j2" dest: "{{ kube_config_dir }}/kubeadm-config.{{ kubeadmConfig_api_version }}.yaml" register: kubeadm_config - name: kubeadm | Initialize first master command: timeout -k 600s 600s {{ bin_dir }}/kubeadm init --config={{ kube_config_dir }}/kubeadm-config.{{ kubeadmConfig_api_version }}.yaml --ignore-preflight-errors=all register: kubeadm_init # Retry is because upload config sometimes fails retries: 3 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 notify: Master | restart kubelet - name: kubeadm | Upgrade first master command: >- timeout -k 600s 600s {{ bin_dir }}/kubeadm upgrade apply -y {{ kube_version }} --config={{ kube_config_dir }}/kubeadm-config.{{ kubeadmConfig_api_version }}.yaml --ignore-preflight-errors=all --allow-experimental-upgrades --allow-release-candidate-upgrades --etcd-upgrade=false --force register: kubeadm_upgrade # Retry is because upload config sometimes fails retries: 3 when: inventory_hostname == groups['kube-master']|first and (kubeadm_config.changed and kubeadm_already_run.stat.exists) failed_when: kubeadm_upgrade.rc != 0 and "field is immutable" not in kubeadm_upgrade.stderr notify: Master | restart kubelet # FIXME(mattymo): remove when https://github.com/kubernetes/kubeadm/issues/433 is fixed - name: kubeadm | Enable kube-proxy command: "{{ bin_dir }}/kubeadm alpha phase addon kube-proxy --config={{ kube_config_dir }}/kubeadm-config.{{ kubeadmConfig_api_version }}.yaml" register: kubeadm_kube_proxy_enable retries: 10 until: kubeadm_kube_proxy_enable is succeeded when: inventory_hostname == groups['kube-master']|first changed_when: false - name: slurp kubeadm certs slurp: src: "{{ item }}" with_items: - "{{ kube_cert_dir }}/apiserver.crt" - "{{ kube_cert_dir }}/apiserver.key" - "{{ kube_cert_dir }}/apiserver-kubelet-client.crt" - "{{ kube_cert_dir }}/apiserver-kubelet-client.key" - "{{ kube_cert_dir }}/ca.crt" - "{{ kube_cert_dir }}/ca.key" - "{{ kube_cert_dir }}/front-proxy-ca.crt" - "{{ kube_cert_dir }}/front-proxy-ca.key" - "{{ kube_cert_dir }}/front-proxy-client.crt" - "{{ kube_cert_dir }}/front-proxy-client.key" - "{{ kube_cert_dir }}/sa.key" - "{{ kube_cert_dir }}/sa.pub" register: kubeadm_certs delegate_to: "{{ groups['kube-master']|first }}" run_once: true - name: kubeadm | write out kubeadm certs copy: dest: "{{ item.item }}" content: "{{ item.content | b64decode }}" owner: root group: root mode: 0600 no_log: true register: copy_kubeadm_certs with_items: "{{ kubeadm_certs.results }}" when: inventory_hostname != groups['kube-master']|first - name: kubeadm | Init other uninitialized masters command: timeout -k 600s 600s {{ bin_dir }}/kubeadm init --config={{ kube_config_dir }}/kubeadm-config.{{ kubeadmConfig_api_version }}.yaml --ignore-preflight-errors=all register: kubeadm_init retries: 10 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 notify: Master | restart kubelet - name: kubeadm | Upgrade other masters command: >- timeout -k 600s 600s {{ bin_dir }}/kubeadm upgrade apply -y {{ kube_version }} --config={{ kube_config_dir }}/kubeadm-config.{{ kubeadmConfig_api_version }}.yaml --ignore-preflight-errors=all --allow-experimental-upgrades --allow-release-candidate-upgrades --etcd-upgrade=false register: kubeadm_upgrade when: inventory_hostname != groups['kube-master']|first and (kubeadm_config.changed and kubeadm_already_run.stat.exists) failed_when: kubeadm_upgrade.rc != 0 and "field is immutable" not in kubeadm_upgrade.stderr notify: Master | restart kubelet - name: kubeadm | Check service account key again stat: path: "{{ kube_cert_dir }}/sa.key" register: sa_key_after delegate_to: "{{groups['kube-master']|first}}" 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 - name: kubeadm | Remove taint for master with node role command: "{{ bin_dir }}/kubectl 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