first version

kubespray/project/roles/etcd/tasks/main.yml

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+---
+- name: Check etcd certs
+  include_tasks: check_certs.yml
+  when: cert_management == "script"
+  tags:
+    - etcd-secrets
+    - facts
+
+- name: Generate etcd certs
+  include_tasks: "gen_certs_script.yml"
+  when:
+    - cert_management | d('script') == "script"
+  tags:
+    - etcd-secrets
+
+- name: Trust etcd CA
+  include_tasks: upd_ca_trust.yml
+  when:
+    - inventory_hostname in groups['etcd'] | union(groups['kube_control_plane']) | unique | sort
+  tags:
+    - etcd-secrets
+
+- name: Trust etcd CA on nodes if needed
+  include_tasks: upd_ca_trust.yml
+  when:
+    - kube_network_plugin in ["calico", "flannel", "cilium"] or cilium_deploy_additionally | default(false) | bool
+    - kube_network_plugin != "calico" or calico_datastore == "etcd"
+    - inventory_hostname in groups['k8s_cluster']
+  tags:
+    - etcd-secrets
+
+- name: "Gen_certs | Get etcd certificate serials"
+  command: "openssl x509 -in {{ etcd_cert_dir }}/node-{{ inventory_hostname }}.pem -noout -serial"
+  register: "etcd_client_cert_serial_result"
+  changed_when: false
+  check_mode: no
+  when:
+    - kube_network_plugin in ["calico", "flannel", "cilium"] or cilium_deploy_additionally | default(false) | bool
+    - kube_network_plugin != "calico" or calico_datastore == "etcd"
+    - inventory_hostname in groups['k8s_cluster']
+  tags:
+    - master
+    - network
+
+- name: Set etcd_client_cert_serial
+  set_fact:
+    etcd_client_cert_serial: "{{ etcd_client_cert_serial_result.stdout.split('=')[1] }}"
+  when:
+    - kube_network_plugin in ["calico", "flannel", "cilium"] or cilium_deploy_additionally | default(false) | bool
+    - kube_network_plugin != "calico" or calico_datastore == "etcd"
+    - inventory_hostname in groups['k8s_cluster']
+  tags:
+    - master
+    - network
+
+- name: Install etcdctl and etcdutl binary
+  import_role:
+    name: etcdctl_etcdutl
+  tags:
+    - etcdctl
+    - etcdutl
+    - upgrade
+  when:
+    - inventory_hostname in groups['etcd']
+    - etcd_cluster_setup
+
+- name: Install etcd
+  include_tasks: "install_{{ etcd_deployment_type }}.yml"
+  when: is_etcd_master
+  tags:
+    - upgrade
+
+- name: Configure etcd
+  include_tasks: configure.yml
+  when: is_etcd_master
+
+- name: Refresh etcd config
+  include_tasks: refresh_config.yml
+  when: is_etcd_master
+
+- name: Restart etcd if certs changed
+  command: /bin/true
+  notify: Restart etcd
+  when: is_etcd_master and etcd_cluster_setup and etcd_secret_changed | default(false)
+
+- name: Restart etcd-events if certs changed
+  command: /bin/true
+  notify: Restart etcd
+  when: is_etcd_master and etcd_events_cluster_setup and etcd_secret_changed | default(false)
+
+# After etcd cluster is assembled, make sure that
+# initial state of the cluster is in `existing`
+# state instead of `new`.
+- name: Refresh etcd config again for idempotency
+  include_tasks: refresh_config.yml
+  when: is_etcd_master