2. Find the configuration information and click "Replace Operating System"
3. Give a prompt and click OK (make sure the server has no important information before)
4. Select the operating system category
5. Select the version (select 8.0 here)
6. Security settings (choose custom password)
7. Fill in the login password (this password will be used as the root password for logging in to Centos in the future)
8. Click OK to replace
9. Need mobile phone number for verification
At this point, the server is successfully replaced. Unlike the virtual machine, opening an external service requires opening port permissions, otherwise the service cannot be used
