Linux在安装好之后通常SELinux都是出于默认开启的状态，开启的情况下会导致一些服务的安装不成功。
在不需要的情况下完全可以关闭掉,下面是在centos 7.0里面如何查看，关闭selinux。
查看selinux状态
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[root@localhost~]#sestatus
SELinuxstatus:enabled
SELinuxfsmount:/sys/fs/selinux
SELinuxrootdirectory:/etc/selinux
Loadedpolicyname:targeted
Currentmode:enforcing
Modefromconfigfile:enforcing
PolicyMLsstatus:enabled
Policydeny_unkNownstatus:allowed
Maxkernelpolicyversion:28
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临时关闭
永久关闭,可以修改配置文件/etc/selinux/config,将其中SELINUX设置为disabled。
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[root@localhost~]#cat/etc/selinux/config
#ThisfilecontrolsthestateofSELinuxonthesystem.
#SELINUX=cantakeoneofthesethreevalues:
#enforcing-SELinuxsecuritypolicyisenforced.
#permissive-SELinuxprintswarningsinsteadofenforcing.
#disabled-NoSELinuxpolicyisloaded.
#SELINUX=enforcing
SELINUX=disabled
#SELINUXTYPE=cantakeoneofthreetwovalues:
#targeted-Targetedprocessesareprotected,
#minimum-Modificationoftargetedpolicy.Onlyselectedprocessesareprotected.
#mls-MultiLevelSecurityprotection.
SELINUXTYPE=targeted
[root@rdo~]#sestatus
SELinuxstatus:disabled
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