bruceman 2017-8-21 15:39
解決 CentOS 7 開機不啟動 rc.local
以前在 Redhat 及 CentOS 要設定開機自動執行的 Shell Script, 一般都會在檔案 /etc/rc.d/rc.local 加入需要執行的 Shell Script 或指令, 但在 CentOS 7 開始, /etc/rc.d/rc.local 預設權限改為 644, 即沒有執行權限, 為甚麼會這樣, 可以開啟 CentOS 7 的 /etc/rc.d/rc.local 看看, 裡面有 Redhat 的說明:<br>[quote]<br><br>#!/bin/bash<br># THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES<br>#<br># It is highly advisable to create own systemd services or udev rules<br># to run scripts during boot instead of using this file.<br>#<br># In constrast to previous versions due to parallel execution during boot<br># this script will NOT be run after all other services.<br>#<br># Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure<br># that this script will be executed during boot.<br>[/quote]<br><br>可以看到這個檔案在 RHEL 及 CentOS 7 只為了解決兼容性, Redhat 建議還是自行建立 systemd 服務或者 udev rules 較好, 如果真的需要使用 rc.local, 只要執行 chmod 給予 rc.local 可執行權限即可:<br># <font color="Red">chmod +x /etc/rc.d/rc.local</font><br><br>執行以上指令後, 下次開機便會自動執行 rc.local 內的指令或 Shell Script.