kubeasz/roles/cluster-restore/tasks/main.yml

- name: 停止ectd 服务
  service: name=etcd state=stopped

- name: 清除etcd 数据目录
  file: name=/var/lib/etcd/member state=absent

- name: 生成备份目录
  file: name=/etcd_backup state=directory

- name: 准备指定的备份etcd 数据
  copy: 
    src: "{{ cluster_dir }}/backup/{{ db_to_restore }}"
    dest: "/etcd_backup/snapshot.db"

- name: 清理上次备份恢复数据
  file: name=/etcd_backup/etcd-{{ inventory_hostname }}.etcd state=absent

- name: etcd 数据恢复
  shell: "cd /etcd_backup && \
	ETCDCTL_API=3 {{ bin_dir }}/etcdctl snapshot restore snapshot.db \
	--name etcd-{{ inventory_hostname }} \
	--initial-cluster {{ ETCD_NODES }} \
	--initial-cluster-token etcd-cluster-0 \
	--initial-advertise-peer-urls https://{{ inventory_hostname }}:2380"

- name: 恢复数据至etcd 数据目录
  shell: "cp -rf /etcd_backup/etcd-{{ inventory_hostname }}.etcd/member /var/lib/etcd/"

- name: 重启etcd 服务
  service: name=etcd state=restarted

- name: 以轮询的方式等待服务同步完成
  shell: "systemctl is-active etcd.service"
  register: etcd_status
  until: '"active" in etcd_status.stdout'
  retries: 8
  delay: 8