详解CentOS设置程序开机自启动的方法
<p>在CentOS系统下，主要有两种方法设置自己安装的程序开机启动。</p>
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<strong>1、把启动程序的命令添加到/etc/rc.d/rc.local文件中，比如下面的是设置开机启动httpd。</strong></p>
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<code class="bash preprocessor bold">#!/bin/sh</code>
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<code class="bash comments">#</code>
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<code class="bash comments"># This script will be executed *after* all the other init scripts.</code>
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<code class="bash comments"># You can put your own initialization stuff in here if you don't</code>
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<code class="bash comments"># want to do the full Sys V style init stuff.</code>
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<code class="bash spaces"> </code>
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<code class="bash functions">touch</code> <code class="bash plain">/var/lock/subsys/local</code>
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<code class="bash plain">/usr/local/apache/bin/apachectl</code> <code class="bash plain">start</code>
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<strong>2、把写好的启动脚本添加到目录/etc/rc.d/init.d/，然后使用命令chkconfig设置开机启动。</strong></p>
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chkconfig 功能说明：检查，设置系统的各种服务。</p>
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语法：chkconfig [--add][--del][--list][系统服务] 或 chkconfig [--level <等级代号>][系统服务]</p>
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--add 添加服务</p>
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--del 删除服务</p>
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--list 查看各服务启动状态</p>
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比如我们设置自启动mysql：</p>
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<code class="bash comments">#将mysql启动脚本放入所有脚本运行目录/etc/rc.d/init.d中</code>
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<code class="bash functions">cp</code> <code class="bash plain">/lamp/mysql-5</code><code class="bash plain">.0.41</code><code class="bash plain">/support-files/mysql</code><code class="bash plain">.server </code><code class="bash plain">/etc/rc</code><code class="bash plain">.d</code><code class="bash plain">/init</code><code class="bash plain">.d</code><code class="bash plain">/mysqld</code>
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<code class="bash comments">#改变权限</code>
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<code class="bash functions">chown</code> <code class="bash plain">root.root </code><code class="bash plain">/etc/rc</code><code class="bash plain">.d</code><code class="bash plain">/init</code><code class="bash plain">.d</code><code class="bash plain">/mysqld</code>
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<code class="bash comments">#所有用户都可以执行，单只有root可以修改</code>
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<code class="bash functions">chmod</code> <code class="bash plain">755 </code><code class="bash plain">/etc/rc</code><code class="bash plain">.d</code><code class="bash plain">/init</code><code class="bash plain">.d</code><code class="bash plain">/mysqld</code>
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<code class="bash comments">#将mysqld 放入linux启动管理体系中</code>
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<code class="bash plain">chkconfig --add mysqld</code>
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<code class="bash comments">#查看全部服务在各运行级状态</code>
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<code class="bash plain">chkconfig --list mysqld</code>
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<code class="bash comments">#只要运行级别3启动，其他都关闭</code>
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<code class="bash plain">chkconfig --levels 245 mysqld off</code>
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例如：我们把httpd的脚本写好后放进/etc/rc.d/init.d/目录，使用</p>
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<code class="bash plain">chkconfig --add httpd</code>
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<code class="bash plain">chkconfig httpd on</code>
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命令即设置好了开机启动。</p>
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<strong>3、把启动程序的命令添加到/etc/rc.d/rc.sysinit 文件中</strong></p>
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脚本/etc/rc.d/rc.sysinit，完成系统服务程序启动，如系统环境变量设置、设置系统时钟、加载字体、检查加载文件系统、生成系统启动信息日志文件等</p>
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比如我们设置自启动apache：</p>
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<code class="bash functions">echo</code> <code class="bash string">"/usr/local/apache2/bin/apachectl start"</code> <code class="bash plain">>> </code><code class="bash plain">/etc/rc</code><code class="bash plain">.d</code><code class="bash plain">/rc</code><code class="bash plain">.sysinit</code>
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。</p>
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原文链接：https://www.centos.bz/2011/09/centos-setup-process-startup-boot/</p>
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