CentOS7下添加開機啓動腳本

0x00 前言

CentOS 6 和CentOS 7的開機啓動項有所區別，這裏分享下CentOS 7下添加開機啓動腳本的方法。

0x01 創建開機啓動腳本

touch  /home/test/autorun.sh

編輯並查看autorun.sh腳本

#/bin/bash
service docker start

0x02 如何加入開機啓動項

方法一 在/etc/rc.d/rc.local中加入運行命令(推薦)

1. 先看下/etc/rc.d/rc.local的說明

   $ 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.
   
   touch /var/lock/subsys/local
   

   rc.local 最後兩行註釋是使用方法，大意是：

   必須給/etc/rc.d/rc.local增加執行權限，已保證這個腳本能在開機啓動時被執行。

2. 把運行自定義腳本的命令追加到rc.local文件中，如下

   #!/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
   bash /home/test/autorun.sh；
   

3. 爲/etc/rc.d/rc.local增加執行權限

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

方法二 通過chkconfig控制

chkconfig控制的方法比較適合服務，因爲可以通過chkconfig控制開啓和關閉，比較靈活。

1. 按照chkconfig格式書寫自定義腳本

   #/bin/bash
   #chkconfig:23 90 10
   #decription:some desc for this script
   service docker start
   

   這裏需要說的是chkconfig：後面的3列分別表示啓動等級，啓動優先級和關閉優先級

   優先級的範圍好理解，範圍是1-100，值越小，優先級越搞

2. 將腳本移動到/etc/rc.d/init.d目錄下

   mv  /home/test/autorun.sh /etc/rc.d/init.d
   

3. 增加自定義腳本的可執行權限

   chmod +x  /etc/rc.d/init.d/autorun.sh
   

4. 添加自定義腳本到開機自動啓動項中，並開啓

   cd /etc/rc.d/init.d
   chkconfig --add autorun.sh
   chkconfig autorun.sh on
   

0x03 參考文獻

https://www.cnblogs.com/qzqdy/p/9596100.html
https://www.cnblogs.com/longchengruoxi/p/11451062.html