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关闭块存储主机

如果需要关闭基于 LVM 的块存储主机

1. 禁用 cinder-volume 服务

   # cinder service-list --host CINDER SERVICE NAME INCLUDING @BACKEND
   # cinder service-disable CINDER SERVICE NAME INCLUDING @BACKEND \
   cinder-volume --reason 'RAM maintenance'
   

2. 列出所有附加了块存储卷的实例

   # mariadb cinder -BNe 'select instance_uuid from volumes where deleted=0 '\
   'and host like "%<cinder host>%"' | tee /home/user/running_instances
   

3. 关闭这些实例

   # cat /home/user/running_instances | xargs -n1 nova stop
   

4. 验证实例已关闭

   # cat /home/user/running_instances | xargs -n1 nova show | grep -F vm_state
   

5. 关闭块存储主机

   # shutdown -h now
   

6. 更换故障硬件并验证新硬件是否正常工作。

7. 启用 cinder-volume 服务

   # cinder service-enable CINDER SERVICE NAME INCLUDING @BACKEND cinder-volume
   

8. 验证主机上的服务是否重新连接到环境

   # cinder service-list --host CINDER SERVICE NAME INCLUDING @BACKEND
   

9. 启动您的实例并确认所有实例都已启动

   # cat /home/user/running_instances | xargs -n1 nova start
   # cat /home/user/running_instances | xargs -n1 nova show | grep -F vm_state