参考资料

https://docs.openstack.org/image-guide/virt-install.html

https://developer.aliyun.com/article/706745

https://www.jianshu.com/p/d0e4ed80b8a1

https://docs.openstack.org/image-guide/obtain-images.html#centos

https://cloud.centos.org/centos/8/x86_64/images/

https://blog.csdn.net/RichardYSteven/article/details/54645328

https://blog.csdn.net/wh211212/article/details/54141412