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O'Reilly Platform
book
可编程网络自动化
by
Jason Edelman
,
Scott S. Lowe
,
Matt Oswalt
January 2023
Intermediate to advanced
458 pages
14h 16m
Chinese
Posts & Telecom Press
Content preview from
可编程网络自动化
持续集成
|
371
图
10-3
看起来应该非常熟悉。全世界的网络工程师一直都是这么做的。可能他们并不是部
署软件,而是在部署基础设施的关键变更,这往往比其他基础设施变更具有更大的“爆炸
半径”。通过
SSH
会
话登入路由器来修改配置,其风险不亚于编辑生产环境中的应用程序
源代码。
相比之下,
CI
只提供了一处地方可供人推送变更
,那就是
CI
管道——尤其是管道中被称
为
同行评审
(
peer review
)的第一部分
。这是一长串自动化步骤(比如自动测试和健全性
检查)中的第一步。为了使变更应用于产品环境,它们
必须
毫无例外地通过这条管道,如
图
10-4
所示。
开发人员
持续集成管道
同行评审
自动测试
自动部署
产品
推送代码
图
10-4
:将软件部署到
CI
管道
再次重申,
CI
的目的是在提高速度的同时维护(或改善)稳定性。这是通过创建进行变更
的单一入口点来实现的。如果变更没有经过一系列测试,以确保其经过技术同行评审,避
免再次出现之前犯过的错误,那么就无法改动基础设施。
有些组织雇用了被称为
发布工程师
(
release engineer
)的专家来管理
CI
管道。
这些人熟悉版本管理工具(如
Git
)、测试工具、服务器搭建和同行评审系统。
他们负责维护管道的完整性,使开发人员无须再为此劳心。他们的目标是自
动化从笔记本计算机到最终产品环境的流程(故称为“发布”工程师)。
聘请专门的发布工程师并不总是那么容易,但是如果可以,并且你的团队足
够强大的话,能配有发布工程师自然再好不过了。
我们已经介绍了
CI
的基础知识,现在来深入了解一些你可能会碰到的组件和相关的概念 ...
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Publisher Resources
ISBN: 9787115606181