Turn off SELinux on CentOS 7

To turn off SELinux on CentOS 7, you can follow these steps:

Temporarily turn off SELinux (not recommended):

setenforce 0

However, this method is only valid for the current startup and will become invalid after restarting the system.
2. Permanently turn off SELinux:

vi /etc/selinux/config

In the open file, change SELINUX=enforcing to SELINUX=disabled. After saving the file, restart the system to take effect.