禁用CentOS的SELinux

启动虚拟机里面的Docker时，发现怎么都启动不了，于是通过journalctl -xe命令查看日志，日志显示SELinux是开启的状态，那么只需要关闭SELinux即可。

SELinux(Security-Enhanced Linux) 是美国国家安全局（NSA）对于强制访问控制的实现，是Linux历史上最杰出的新安全子系统。

查看SELinux的状态

1 2	[root@mylocal ~]# getenforce Enforcing

这表明SELinux是启动的状态。

永久关闭SELinux

编辑/etc/selinux/config文件

1	[root@mylocal ~]# vi /etc/selinux/config

将SELINUX=enforcing改为SELINUX=disabled

# 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