April 4, 2013

How to Write CentOS Initialization Scripts with Upstart

On Linux systems, initialization (init) scripts manage the state of system services during system startup and shutdown. When the system goes through its runlevels, the System V init system starts and stops services as configured. While this tried-and-true technology has been around since the dawn of Unix, you can now create modern and efficient CentOS 6 init scripts by using Upstart, an event-based replacement for System V init.

Until its latest release, CentOS used the System V init system by default. SysV init scripts are simple and reliable, and guarantee a certain order of starting and stopping.

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