3.5. 创建使用可组合角色的 control plane 节点的备份

流程

1. 在每个 Controller 节点上，备份每个节点的 config-drive 分区：

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

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   注意

   您只需要在 Controller 节点上执行此步骤。

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 Contorl-Plane - Composable Roles
   
   - become: true
     hosts: ControllerOpenstack,Database,Messaging,Networker
     name: Stop service management
     tasks:
       - include_role:
           name: backup-and-restore
           tasks_from: ../backup/tasks/service_manager_pause
         when:
          - tripleo_backup_and_restore_service_manager
   
   - become: true
     hosts: Database
     name: Database Backup
     tasks:
       - include_role:
           name: backup-and-restore
           tasks_from: ../backup/tasks/db_backup
   
   - become: true
     hosts: pacemaker
     name: Backup pacemaker configuration
     tasks:
       - include_role:
           name: backup-and-restore
           tasks_from: pacemaker_backup
   
   - become: true
     hosts: ControllerOpenstack,Database,Messaging,Networker
     name: Create recovery images with ReaR
     tasks:
       - include_role:
           name: backup-and-restore
           tasks_from: ../backup/tasks/main
   
   - become: true
     hosts: pacemaker
     name: Enabled pacemaker
     tasks:
       - name: Enable pacemaker
         command: pcs cluster start --all
         when: enabled_galera
         run_once: true
         tags:
          - bar_create_recover_image
   
   - become: true
     hosts: Database
     name: Restart galera
     tasks:
       - name: unPause database container
         command: "{{ tripleo_container_cli }} unpause {{ tripleo_backup_and_restore_mysql_container }}"
         when:
          - tripleo_container_cli is defined
           - not enabled_galera
           - tripleo_backup_and_restore_mysql_container is defined
         tags:
          - bar_create_recover_image
   
   - become: true
     hosts: ControllerOpenstack,Database,Messaging,Networker
     name: Unpause everything
     tasks:
       - name: Gather Container Service Name
         shell: |
          set -o pipefail
           /usr/bin/{{ tripleo_container_cli }} ps -a --filter='status=paused' --format '{{ '{{' }}.Names {{ '}}' }} '
         register: container_services
         changed_when: container_services.stdout is defined
         tags:
          - bar_create_recover_image
   
       - name: Unpause containers for database backup.
         command: "{{ tripleo_container_cli }} unpause {{ item }}"
         with_items: "{{ container_services.stdout_lines }}"
         when: tripleo_container_cli is defined
         tags:
          - bar_create_recover_image

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

   重要

   不要操作堆栈。当您停止 pacemaker 集群和容器时，这会导致 control plane 服务临时中断到 Compute 节点。网络连接、Ceph 和 NFS 或 SFTP 数据平面服务也会中断。您无法创建实例、迁移实例、验证请求或监控集群的健康状况，直到 pacemaker 集群和容器按照此流程的最后步骤返回服务。

   (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

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