linux中如何關閉 開啟SElinux

1、檢視核心、系統版本

[root@virtualboxcentos7 test]# hostnamectl

static hostname: virtualboxcentos7
icon name: computer-vm
chassis: vm
machine id: e8d08b54fc55254aaefd55597b2e435b
boot id: f308a2863585439cb4c69007b56ad527
virtualization: kvm
operating system: centos linux 
7(core) ## 發行版
cpe os name: cpe:/o:centos:centos:7
kernel: linux 
3.10.0-1160.49.1
.el7.x86_64 ## 核心
architecture: x86-64

[root@virtualboxcentos7 test]# sestatus  ## 使用sestatus檢視

selinux status: enabled
selinuxfs mount: /sys/fs/selinux
selinux root directory: /etc/selinux
loaded policy name: targeted
current mode: enforcing ## 說明是啟用狀態
mode 
from
config file: enforcing
policy mls status: enabled
policy deny_unknown status: allowed
max kernel policy version: 
31

[root@virtualboxcentos7 test]# sestatus  ## 檢視當前狀態

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: 
31[root@virtualboxcentos7 test]# setenforce 
0 ## 臨時關閉selinux
[root@virtualboxcentos7 test]# sestatus ## 檢視狀態
selinux status: enabled
selinuxfs mount: /sys/fs/selinux
selinux root directory: /etc/selinux
loaded policy name: targeted
current mode: permissive ## 由enforcing 變為了 permissive
mode 
from
config file: enforcing
policy mls status: enabled
policy deny_unknown status: allowed
max kernel policy version: 
31

[root@virtualboxcentos7 test]# sestatus   ## 檢視狀態

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: 
31[root@virtualboxcentos7 test]#setenforce 
1 ## 開啟selinux
[root@virtualboxcentos7 test]#sestatus ## 檢視狀態
selinux status: enabled
selinuxfs mount: /sys/fs/selinux
selinux root directory: /etc/selinux
loaded policy name: targeted
current mode: enforcing ## 由permissive 改為了 enforcing
mode 
from
config file: enforcing
policy mls status: enabled
policy deny_unknown status: allowed
max kernel policy version: 
31

[root@virtualboxcentos7 test]# vim /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 - no selinux policy is
loaded.
selinux=disabled ## 此處改為disabled， 然後儲存退出
6、重啟系統、檢查
[root@virtualboxcentos7 test]# reboot

[root@virtualboxcentos7 test]# sestatus

selinux status: disabled
[root@virtualboxcentos7 test]# getenforce ## 說明已經禁用selinux
disabled
7、如果永久開啟，在/etc/sysconfig/selinux配置檔案中disabled改為enforcing，然後重啟系統即可
 
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