Security vendors have scanned many system vulnerabilities, and the system security is classified as high risk. Please tell me how to install patches for the Centos system without affecting the normal business of the existing website and database. Are there any good tools?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Generally, vulnerabilities are caused by the version being too low and need to be upgraded. Just take a snapshot before upgrading