CentOS7中关闭selinux

在安装Cobbler和Puppet时需要关闭selinux，但是通常情况下载安装完CentOS7后，默认情况下SElinux是启用状态，

如下所示：

[root@rdo ~]# sestatus
SELinux status:                 enabled
SELinuxfs mount:                /sys/fs/selinux
SELinux root directory:         /etc/selinux
Loaded policy name:             targeted
Current mode:                   enforcing
Mode from config file:          enforcing
Policy MLS status:              enabled
Policy deny_unknown status:     allowed
Max kernel policy version:      28

1、如果要临时关闭，可以执行

setenforce 0

此时的状态如下

[root@rdo ~]# sestatus
SELinux status:                 enabled
SELinuxfs mount:                /sys/fs/selinux
SELinux root directory:         /etc/selinux
Loaded policy name:             targeted
Current mode:                   permissive
Mode from config file:          enforcing
Policy MLS status:              enabled
Policy deny_unknown status:     allowed
Max kernel policy version:      28

2、如果要永久关闭，可以修改配置文件/etc/selinux/config，将SELINU置为disabled。

[root@rdo ~]# cat /etc/selinux/config

# 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 - No SELinux policy is loaded.
#SELINUX=enforcing
SELINUX=disabled
# SELINUXTYPE= can take one of three two values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected.
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

修改该配置文件也可以执行下面的命令来完成

sed -i '/SELINUX/s/enforcing/disabled/' /etc/selinux/config

修改完成后，保存重启，重启后状态如下：

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