centos7 的/etc/rc.local不会开机执行，查看/etc/rc.local文件内容的就发现了问题的原因了
#!/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 constrast 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. |
翻译：
#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。 |
查看/etc/rc.local的权限
[root@localhost ~]# ll /etc/rc.locallrwxrwxrwx. 1 root root 13 8月 12 06:09 /etc/rc.local -> rc.d/rc.local[root@localhost ~]# ll /etc/rc.d/rc.local-rw-r--r--. 1 root root 477 6月 10 13:35 /etc/rc.d/rc.local |
/etc/rc.d/rc.local没有执行权限，于是按说明的内容执行
chmod +x /etc/rc.d/rc.local |
重启后/etc/rc.local能够执行了。