php - 重启centos7后网站显示异常-PHP中文网问答

每次重启服务器centos7，打开网站都会出现如下报错，提示是权限问题，不知道是不是httpd的配置问题，httpd是配置自动启动的

Warning: Unknown: failed to open stream: Permission denied in Unknown on line 0

Fatal error: Unknown: Failed opening required '/www/frontend/web/index.php' (include_path='.:/usr/local/php/lib/php') in Unknown on line 0

网站是php7.0+httpd2.4, httpd2.4的根目录在/www/frontend/web/index.php下，整个/www目录都有权限，包括/www内部文件也都是777权限都不行。

drwxrwxrwx.   9 root root 4096 Jan 11 23:17 www

只有先

/usr/sbin/httpd -k stop

然后

/usr/sbin/httpd -k start

就可以正常显示,如果是直接使用

/usr/sbin/httpd -k restart

也是不行的。所以操作都在root账户下操作，不知道是为什么？apache运行的权限问题吗？

httpd.conf中运行用户为apache

#
# If you wish httpd to run as a different user or group, you must run
# httpd as root initially and it will switch.  
#
# User/Group: The name (or #number) of the user/group to run httpd as.
# It is usually good practice to create a dedicated user and group for
# running httpd, as with most system services.
#
User apache
Group apache

/usr/sbin/httpd权限

[root@localhost www]# ls -al /usr/sbin/httpd 
-rwxrwxrwx. 1 root root 507032 Nov 15 02:05 /usr/sbin/httpd

修改/usr/sbin/httpd重启服务器还是不行

[root@localhost ~]# ls -al /usr/sbin/httpd 
-rwxrwxrwx. 1 apache apache 507032 Nov 15 02:05 /usr/sbin/httpd

开机自动启动配置文件:

[Unit]
Description=The Apache HTTP Server
After=network.target remote-fs.target nss-lookup.target
Documentation=man:httpd(8)
Documentation=man:apachectl(8)

[Service]
Type=notify
EnvironmentFile=/etc/sysconfig/httpd
ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND
ExecReload=/usr/sbin/httpd $OPTIONS -k graceful
ExecStop=/bin/kill -WINCH ${MAINPID}
# We want systemd to give httpd some time to finish gracefully, but still want
# it to kill httpd after TimeoutStopSec if something went wrong during the
# graceful stop. Normally, Systemd sends SIGTERM signal right after the
# ExecStop, which would kill httpd. We are sending useless SIGCONT here to give
# httpd time to finish.
KillSignal=SIGCONT
PrivateTmp=true

[Install]
WantedBy=multi-user.target

考虑到可能是开机自动启动的权限问题？恳请各位帮忙解答！