--- - name: Set kubeadm_discovery_address set_fact: kubeadm_discovery_address: >- {%- if "127.0.0.1" in kube_apiserver_endpoint or "localhost" in kube_apiserver_endpoint -%} {{ first_kube_master }}:{{ kube_apiserver_port }} {%- else -%} {{ kube_apiserver_endpoint | replace("https://", "") }} {%- endif %} tags: - facts - name: Check if kubelet.conf exists stat: path: "{{ kube_config_dir }}/kubelet.conf" register: kubelet_conf - name: Check if kubeadm CA cert is accessible stat: path: "{{ kube_cert_dir }}/ca.crt" register: kubeadm_ca_stat delegate_to: "{{ groups['kube-master'][0] }}" run_once: true - name: Calculate kubeadm CA cert hash shell: openssl x509 -pubkey -in {{ kube_cert_dir }}/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //' register: kubeadm_ca_hash when: - kubeadm_ca_stat.stat is defined - kubeadm_ca_stat.stat.exists delegate_to: "{{ groups['kube-master'][0] }}" run_once: true - name: Create kubeadm token for joining nodes with 24h expiration (default) command: "{{ bin_dir }}/kubeadm token create" register: temp_token delegate_to: "{{ groups['kube-master'][0] }}" when: kubeadm_token is not defined - name: Set kubeadm_token to generated token set_fact: kubeadm_token: "{{ temp_token.stdout }}" when: kubeadm_token is not defined - name: gets the kubeadm version command: "{{ bin_dir }}/kubeadm version -o short" register: kubeadm_output - name: sets kubeadm api version to v1beta2 set_fact: kubeadmConfig_api_version: v1beta2 - name: Create kubeadm client config template: src: "kubeadm-client.conf.{{ kubeadmConfig_api_version }}.j2" dest: "{{ kube_config_dir }}/kubeadm-client.conf" backup: yes when: not is_kube_master - name: Join to cluster if needed environment: PATH: "{{ bin_dir }}:{{ ansible_env.PATH }}:/sbin" # Make sure we can workaround RH / CentOS conservative path management when: not is_kube_master and (not kubelet_conf.stat.exists) block: - name: Join to cluster command: >- timeout -k {{ kubeadm_join_timeout }} {{ kubeadm_join_timeout }} {{ bin_dir }}/kubeadm join --config {{ kube_config_dir }}/kubeadm-client.conf --ignore-preflight-errors=DirAvailable--etc-kubernetes-manifests register: kubeadm_join rescue: - name: Join to cluster with ignores command: >- timeout -k {{ kubeadm_join_timeout }} {{ kubeadm_join_timeout }} {{ bin_dir }}/kubeadm join --config {{ kube_config_dir }}/kubeadm-client.conf --ignore-preflight-errors=all register: kubeadm_join always: - name: Display kubeadm join stderr if any when: kubeadm_join is failed debug: msg: | Joined with warnings {{ kubeadm_join.stderr_lines }} - name: Update server field in kubelet kubeconfig lineinfile: dest: "{{ kube_config_dir }}/kubelet.conf" regexp: 'server:' line: ' server: {{ kube_apiserver_endpoint }}' backup: yes when: - kubeadm_config_api_fqdn is not defined - not is_kube_master - kubeadm_discovery_address != kube_apiserver_endpoint | replace("https://", "") notify: Kubeadm | restart kubelet # FIXME(mattymo): Need to point to localhost, otherwise masters will all point # incorrectly to first master, creating SPoF. - name: Update server field in kube-proxy kubeconfig shell: >- {{ bin_dir }}/kubectl --kubeconfig {{ kube_config_dir }}/admin.conf get configmap kube-proxy -n kube-system -o yaml | sed 's#server:.*#server: https://127.0.0.1:{{ kube_apiserver_port }}#g' | {{ bin_dir }}/kubectl --kubeconfig {{ kube_config_dir }}/admin.conf replace -f - run_once: true delegate_to: "{{ groups['kube-master']|first }}" when: - kubeadm_config_api_fqdn is not defined - kubeadm_discovery_address != kube_apiserver_endpoint | replace("https://", "") - not kube_proxy_remove - loadbalancer_apiserver_localhost tags: - kube-proxy - name: Set ca.crt file permission file: path: "{{ kube_cert_dir }}/ca.crt" owner: root group: root mode: "0644" - name: Restart all kube-proxy pods to ensure that they load the new configmap shell: "{{ bin_dir }}/kubectl --kubeconfig {{ kube_config_dir }}/admin.conf delete pod -n kube-system -l k8s-app=kube-proxy --force --grace-period=0" run_once: true delegate_to: "{{ groups['kube-master']|first }}" when: - kubeadm_config_api_fqdn is not defined - kubeadm_discovery_address != kube_apiserver_endpoint | replace("https://", "") - not kube_proxy_remove tags: - kube-proxy # FIXME(mattymo): Reconcile kubelet kubeconfig filename for both deploy modes - name: Symlink kubelet kubeconfig for calico/canal file: src: "{{ kube_config_dir }}/kubelet.conf" dest: "{{ kube_config_dir }}/node-kubeconfig.yaml" state: link force: yes when: - kube_network_plugin in ['calico','canal'] - calico_version is version('v3.3.0', '<') # FIXME(jjo): need to post-remove kube-proxy until https://github.com/kubernetes/kubeadm/issues/776 # is fixed - name: Delete kube-proxy daemonset if kube_proxy_remove set, e.g. kube_network_plugin providing proxy services shell: "{{ bin_dir }}/kubectl --kubeconfig /etc/kubernetes/admin.conf delete daemonset -n kube-system kube-proxy" run_once: true delegate_to: "{{ groups['kube-master']|first }}" when: - kube_proxy_remove - kubeadm_discovery_address != kube_apiserver_endpoint | replace("https://", "") # When scaling/adding nodes in the existing k8s cluster, kube-proxy wouldn't be created, as `kubeadm init` wouldn't run. ignore_errors: true tags: - kube-proxy - name: Extract etcd certs from control plane if using etcd kubeadm mode include_tasks: kubeadm_etcd_node.yml when: - etcd_kubeadm_enabled - kubeadm_control_plane - inventory_hostname not in groups['kube-master'] - kube_network_plugin in ["calico", "flannel", "canal", "cilium"] - kube_network_plugin != "calico" or calico_datastore == "etcd"