centos 7 將rc.local配置成服務

1.權限設置（/etc/rc.local和/etc/rc.d/rc.local都需要賦予執行權限）

chmod +x /etc/rc.d
chmod +x /etc/rc.d/rc.local

2.設置服務啓動腳本。
1）進入路徑

cd /usr/lib/systemd/system

2）編輯服務腳本

vi rc-local.service

刪除之前的所有數據，導入以下數據。

##This file is part of systemd.
#systemd is free software; you can redistribute it and/or modify it
#under the terms of the GNU Lesser General Public License as published by
#the Free Software Foundation; either version 2.1 of the License, or
#(at your option) any later version.

#This unit gets pulled automatically into multi-user.target by
#systemd-rc-local-generator if /etc/rc.d/rc.local is executable.
[Unit]
Description=/etc/rc.d/rc.local Compatibility
ConditionFileIsExecutable=/etc/rc.d/rc.local
After=network.target

[Service]
Type=forking
ExecStart=/etc/rc.d/rc.local start
TimeoutSec=0
RemainAfterExit=yes
SysVStartPriority=99

[Install]
WantedBy=multi-user.target

3.使用命令啓動服務（確認服務可用）

systemctl start rc-local

使用systemctl -t service查看服務器所有服務的狀態,確認服務rc-local.service是否運行正常.
4.執行systemctl enable rc-local

systemctl enable rc-local

出現以下提示表示成功添加開機自啓動：
Created symlink from /etc/systemd/system/multi-user.target.wants/rc-local.service to /usr/lib/systemd/system/rc-local.service.

如下圖：

完成以上步驟就可以將開機自動執行的命令寫入/etc/rc.d/rc.local中，實現開機自動執行。