象となる設定ファイルは『 /etc/selinux/config 』です。vi エディタなどで開き、6行目を【 SELINUX=disabled 】と書き換えます。

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - SELinux is fully disabled.
SELINUX=disabled