如何开启或关闭SELinux

CentOS的 /etc/sysconfig/selinux

# 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=enforcing

# SELINUXTYPE= type of policy in use. Possible values are:
#       targeted - Only targeted network daemons are protected.
#       strict - Full SELinux protection.

SELINUXTYPE=targeted

把 SELINUX设定为disable, 下次启动系统后将会停止SElinux。

Linux核心参数(Kernel Parameter)

或者可以在核心参数后加上： selinux=0 （停止）或 selinux=1 (开启）参数

档案/boot/grub/menu.lst

title Fedora Core (2.6.18-1.2798.fc6)
root (hd0,0)
kernel /vmlinuz-2.6.18-1.2798.fc6 ro root=LABEL=/ rhgb quiet selinux=0
initrd /initrd-2.6.18-1.2798.fc6.img

检查SELinux现时况态

要知到你现在是否使用 SELinux:

# getenforce
Enforcing

注：setenforce是切换SELinux的模式（Enforcing和Permissive，都是在开启状态），而不能设置SELinux是开启还是关闭。