Upstart 有哪些活动？

Question

是否有可用于 Upstart 的可用事件列表？

例如start on local-filesystems，本地文件系统是一个事件，但它何时触发以及还有哪些其他事件？

Answer 1

Manpages

Starting in Ubuntu 11.04, there is an awesome man page created by James Hunt called usptart-events so from the terminal run:

man upstart-events

It is also available from the Ubuntu online manpages, upstart-events, but loses some formatting so a better online resource for the same information is from the Upstart cookbook.

Visualisation of Jobs and Events

There is also an excellent tool, initctl2dot for visualization of upstart events. Below are examples of using the command to generate images from Ubuntu 12.04.

View all jobs:

initctl2dot -o - | dot -Tpng -o upstart.png

View only plymouth, lightdm and mountall jobs:

initctl2dot -r plymouth,lightdm,mountall -o - | dot -Tpng -o upstart2.png

Source

Grep init

You can also grep for emit in the following directories:

grep -r emit /etc/init /etc/init.d /etc/network/if*.d

That will give you most of them, the others are emitted by the dbus bridge.

For more information and best practices, see The Upstart Cookbook.

Answer 2

upstart这些事件由其本身或由其发出，mountall并且所有事件都有其man页面：

挂载 挂载的虚拟文件系统 本地文件系统 所有交换文件系统 远程文件系统 开始 开始 停止 停止 启动 运行级别(7)

任何应用程序都可以发出自己的事件，例如通过

initctl emit suspend

其中一些您可以将其视为输出

grep emit /etc/init/*

更多信息还可访问：

http://netsplit.com/2008/04/27/upstart-05-events/

http://upstart.at/