2.5. 创建 control plane 节点的备份

流程

1. 在每个 control plane 节点上，以 root 用户身份备份每个节点的 config-drive 分区：

   [root@controller-x ~]$ dd if=<config_drive_partition> of=/mnt/config-drive

2. 在 undercloud 节点上，创建以下 Ansible playbook：

   (undercloud) [stack@undercloud ~]$ cat <<'EOF' > ~/bar_rear_create_restore_images-controller.yaml
   # Playbook
   # Using ReaR on the control plane nodes.
   - become: true
     hosts: ceph_mon
     name: Backup ceph authentication
     tasks:
       - name: Backup ceph authentication role
         include_role:
           name: backup-and-restore
           tasks_from: ceph_authentication
         tags:
         -  bar_create_recover_image
   - become: true
     hosts: Controller
     name: Create the recovery images for the control plane
     roles:
     - role: backup-and-restore
   EOF

3. 在 undercloud 节点上，输入以下 ansible-playbook 命令来创建 control plane 节点的备份：

   (undercloud) [stack@undercloud ~]$ ansible-playbook \
       -v -i ~/tripleo-inventory.yaml \
       --extra="ansible_ssh_common_args='-o StrictHostKeyChecking=no'" \
       --become \
       --become-user root \
       --tags bar_create_recover_image \
       ~/bar_rear_create_restore_images-controller.yaml