本系列介绍的是开源ha软件heartbeat。
This series describes the open source HA software heartbeat.
Booch：是的，Rational是开源软件的虔诚信徒。
Booch: Well, Rational was a great believer in open source software.
这个问题已经不是关于我是否能够在日常生活是使用开源软件；真正的问题是，如果没有开源软件，我能够做这样多的事情吗？
The question is no longer whether I can use open source software in my daily life; the question is whether I could do much of anything without it.
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