yum provides semanage
yum install -y policycoreutils-python
getenforce
sestatus
setenforce   
 /etc/selinux/config 
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
修改文件的SELinux标签的命令:chcon ;restorecon
chcon [option]...  CONTXT  /path/to/file...  #直接对指定的文件写完整的安全上下文字段
chcon [option]...  [-u USER] [-r ROLE] [-l RANGE] [-t TYPE] FILE...  #根据上下文类型更改
chcon [option]...  --reference=RFILE  FILE....  #参考RFILE的上下文修改FILE的上下文
-R :如果是目录,将同时递归设置该目录下所有文件
restorencon  [option]  /path/to/somewhere
               -R:递归恢复处理
semanage fcontext  -l
semanage fcontext -a -t httpd_sys_content_t ‘/testdir(/.*)?’
semanage fcontext -d -t httpd_sys_content_t ‘/testdir(/,*)?’
semanage port -l
semanage port -a -t http_port_t -p tcp 9527
semanage port -d -t http_port -t -p tcp 9527
semanage port -m -t http_port_t -p tcp 9527