We can use the setenforce command to disable SELinux

# setenforce 0

The ‘setenforce’ command may be used to switch between Enforcing and Permissive modes

To make it permanant, edit /etc/selinux/config file, run:

# vi /etc/selinux/config

Update the configuration file as follows:

SELINUX=disabled

To quickly check SELinux status by running following commands.

root@serverxx [~]# cat /etc/sysconfig/selinux

Or

root@serverxx [~]# getenforce
Disabled
root@serverxx [~]#

Or

root@serverxx [~]# sestatus
SELinux status:                 disabled
root@serverxx [~]#