了解如何关闭selinux

谁借莪１个温暖的怀抱￠ 2022-05-15 06:08 330阅读 0赞

1.查看SELinux状态  
1.1 getenforce  
getenforce 命令是单词get（获取）和enforce(执行)连写，可查看selinux状态，与setenforce命令相反。  
setenforce 命令则是单词set（设置）和enforce(执行)连写，用于设置selinux防火墙状态，如： setenforce 0用于关闭selinux防火墙，但重启后失效

[root@localhost ~]# getenforce
    Enforcing

1.2 /usr/sbin/sestatus  
Current mode表示当前selinux防火墙的安全策略

[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防火墙的状态，enabled表示启用selinux防火墙  
Current mode： selinux防火墙当前的安全策略，enforcing 表示强

2.关闭SELinux  
2.1 临时关闭  
setenforce 0 ：用于关闭selinux防火墙，但重启后失效。

[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 永久关闭  
修改selinux的配置文件，重启后生效。

打开 selinux 配置文件

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

修改 selinux 配置文件  
将`SELINUX=enforcing`改为`SELINUX=disabled`，保存后退出

# 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

此时获取当前selinux防火墙的安全策略仍为Enforcing，配置文件并未生效。

[root@localhost ~]# getenforce
    Enforcing

重启

[root@localhost ~]# reboot

验证

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