我正在使用fedora 15.
我试图添加MYSql守护进程在系统strtup期间启动.
我已经明白我必须将它添加到rc5.d,因为它是默认目标&是graphical.target.
来自inittab：
systemd uses ‘targets’ instead of runlevels. By default,there are two main targets:
multi-user.target: analogous to runlevel 3
graphical.target: analogous to runlevel 5
从An introduction to services,runlevels,and rc.d scripts 开始：
When the system is shut down,there is another symlink in the /etc/rc0.d and /etc/rc6.d directories (halt and reboot,respectively) that starts with a K instead of an S,which tells init to shut down the process.
我注意到httpd的符号链接存在于所有rc< number> .d文件夹中
作为符号链接：K15httpd – > ../init.d/httpd.
没有以S开头的符号链接.因为我必须手动启动它才有意义.
- Why is the symlink
K15httpd -> ../init.d/httpd present in all the rc<number>.d folders?
- What should I name the symlink if I want to start httpd during system startup?
- What is the number that is present in the symlink? i.e. K15httpd -> ../init.d/httpd what is 15 here?
- I read (07001) that the symlink to MYSql should be S98mysql is it right and what should the name to symlink that starts with K should be?
对于/etc/init.d中的任何一个,RC脚本的命名约定如下
>启动脚本S ##<基本脚本名称>
>杀死脚本K ##< base script name>
##表示在运行级别控制脚本运行期间执行脚本的顺序.脚本执行的顺序是：
>杀死脚本
>启动脚本
它的执行顺序与输出中的文件顺序相同：
`ls /etc/rc#.d/K*`
`ls /etc/rc#.d/S*`
因此,通过这个标记,K15httpd脚本的存在意味着在你的情况5的这个运行级别上应该停止apache(或另一个web服务).
同样,在较低级别的MySQL的kill脚本然后你启动它的那个将是K02MySQL.
您可以查看this link以了解有关编写System V init脚本的信息.
