Fedora 22(15以上版本)开机自启动脚本

　　前段时间做了一个网站btdog磁力与btdog电视直播。DHT爬虫需要消耗比较多的资源，原来的服务器不够用了，于是自己使用电脑搭了一台服务器，使用Fedora22系统。在Fedora22中自动写了些开机自启动脚本，但始终找不到放在哪里。折腾了下，发现原来Fedora 从15开始，系统初始化软件开始由initscript转向了systemd方式，原来要写开机启动脚本一般写在rc.local里面，但现在rc.local已经不存在了，不过systemd仍然有rc-local服务。

　　编辑/usr/lib/systemd/system/rc-local.service 　

#  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

　　可见我们只要新建文件/etc/rc.d/rc.local 然后加入自己的脚本就可以了

　　新建rc.local　　

touch /etc/rc.d/rc.local

　　vim /etc/rc.d/rc.local

#!/bin/bash

#下面是你需要执行的脚本

#####################################

　　赋以可执行权限

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

　　然后使用systemd开机自启动

systemctl enable rc-local.service

　　提示错误如下：　

The unit files have no [Install] section. They are not meant to be enabled

using systemctl.

Possible reasons for having this kind of units are: 1) A unit may be statically enabled by being symlinked from another unit's .wants/ or .requires/ directory. 2) A unit's purpose may be to act as a helper for some other unit which has  a requirement dependency on it. 3) A unit may be started when needed via activation (socket, path, timer, D-Bus, udev, scripted systemctl call, ...).

　　这个时候，我们需要在/usr/lib/systemd/system/rc-local.service 中加入[Install]区域，用于告诉systemd需要在多用户启动时还是图形启动时自启动这个脚本

　　编辑/usr/lib/systemd/system/rc-local.service 

#  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

　　好了，然后在使用systemd开机自启动

systemctl enable rc-local.service 

　　然后查看启动状态

#systemctl status rc-local.service

● rc-local.service - /etc/rc.d/rc.local Compatibility

   Loaded: loaded (/usr/lib/systemd/system/rc-local.service; enabled; vendor preset: disabled)

   Active: active (exited) since 一 2015-06-22 20:23:23 CST; 28min ago



6月 22 20:23:23 btdog systemd[1]: Starting /etc/rc.d/rc.local Compatibility...

6月 22 20:23:23 btdog rc.local[3973]: /etc/rc.d/rc.local:行4: [Install]: 未找到命令

6月 22 20:23:23 btdog systemd[1]: Started /etc/rc.d/rc.local Compatibility.

6月 22 20:27:28 btdog systemd[1]: Started /etc/rc.d/rc.local Compatibility.

6月 22 20:37:05 btdog systemd[1]: [/usr/lib/systemd/system/rc-local.service:20] Support for option SysVStartPriority=...ignored

Hint: Some lines were ellipsized, use -l to show in full.

　　启动成功~~