centos7下/etc/rc.local文件里配置的开机启动项不执行的解决办法

[root@openstack ~]# cat /etc/rc.local 
#!/bin/bash
# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES
#
# It is highly advisable to create own systemd services or udev rules
# to run scripts during boot instead of using this file.
#
# In contrast to previous versions due to parallel execution during boot
# this script will NOT be run after all other services.
#
# Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure
# that this script will be executed during boot.
.......

#这个文件是为了兼容性的问题而添加的。
#
#强烈建议创建自己的systemd服务或udev规则来在开机时运行脚本而不是使用这个文件。
#
#与以前的版本引导时的并行执行相比较，这个脚本将不会在其他所有的服务后执行。
#
#请记住，你必须执行“chmod +x /etc/rc.d/rc.local”来确保确保这个脚本在引导时执行。

[root@openstack ~]# ll /etc/rc.local
lrwxrwxrwx. 1 root root 13 1月  29 10:45 /etc/rc.local -> rc.d/rc.local
[root@openstack ~]# ll /etc/rc.d/rc.local 
-rw-r--r--. 1 root root 473 1月  25 23:52 /etc/rc.d/rc.local

[root@openstack ~]# chmod +x /etc/rc.d/rc.local
[root@openstack ~]# ll /etc/rc.d/rc.local 
-rwxr-xr-x. 1 root root 473 1月  25 23:52 /etc/rc.d/rc.local