查看SELinux狀態&關閉SELinux

1. 查看SELinux狀態

1.1 getenforce

• getenforce 命令是單詞get（獲取）和enforce(執行)連寫，可查看selinux狀態，與setenforce命令相反。

• setenforce 命令則是單詞set（設置）和enforce(執行)連寫，用於設置selinux防火牆狀態，如： setenforce 0用於關閉selinux防火牆，但重啟後失效

  [root@localhost ~]# getenforce
  Enforcing

1.2 /usr/sbin/sestatus

Current mode表示當前selinux防火牆的安全策略

[root@localhost ~]# /usr/sbin/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

SELinux status：selinux防火牆的狀態，enabled表示啟用selinux防火牆
Current mode： selinux防火牆當前的安全策略，enforcing 表示強

2. 關閉SELinux

2.1 臨時關閉

setenforce 0 ：用於關閉selinux防火牆，但重啟後失效。

[root@localhost ~]# setenforce 0

[root@localhost ~]# /usr/sbin/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

2.1 永久關閉

修改selinux的配置文件，重啟後生效。

打開 selinux 配置文件

[root@localhost ~]# vim /etc/selinux/config

修改 selinux 配置文件

將SELINUX=enforcing改為SELINUX=disabled，保存後退出

# 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
# 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

此時獲取當前selinux防火牆的安全策略仍為Enforcing，配置文件並未生效。

[root@localhost ~]# getenforce
Enforcing

重啟

[root@localhost ~]# reboot

驗證

[root@localhost ~]# /usr/sbin/sestatus
SELinux status:                 disabled

[root@localhost ~]# getenforce
Disabled