kubespray/roles/etcd/tasks/set_cluster_health.yml

---
- name: Configure | Check if cluster is healthy
  shell: "{{ bin_dir }}/etcdctl --endpoints={{ etcd_access_addresses }} cluster-health | grep -q 'cluster is healthy'"
  register: etcd_cluster_is_healthy
  ignore_errors: true
  changed_when: false
  check_mode: no
  when: is_etcd_master
  tags:
    - facts
  environment:
    ETCDCTL_CERT_FILE: "{{ etcd_cert_dir }}/node-{{ inventory_hostname }}.pem"
    ETCDCTL_KEY_FILE: "{{ etcd_cert_dir }}/node-{{ inventory_hostname }}-key.pem"