CentOS7添加需要开机启动的脚本

[root@LVS-RS02 ~]# cat /etc/rc.d/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.
touch /var/lock/subsys/local
说明：如上可知，在CentOS7中，/etc/rc.d/rc.local文件的权限被降低了,开机的时候执行在自己的脚
本是不能启动的，所有需要添加可执行的权限
[root@LVS-RS02 ~]# ls -l /etc/rc.d/rc.local
-rw-r--r--. 1 root root 473 Nov  7  2016 /etc/rc.d/rc.local
[root@LVS-RS02 ~]# chmod +x /etc/rc.d/rc.local

[root@LVS-RS02 ~]# mkdir -p /shells/
[root@LVS-RS02 ~]# vim /shells/clean_iptables.sh
#!/bin/bash
/usr/sbin/iptables -F
/usr/sbin/iptables -X
/usr/sbin/iptables -Z
/usr/sbin/setenforce 0
[root@LVS-RS02 ~]# chmod +x /shells/clean_iptables.sh
[root@LVS-RS02 ~]# vim /etc/rc.d/rc.local
# 添加需要开机启动的脚本：
/bin/sh /shells/clean_iptables.sh>/dev/null 2>&1