January 2023
Intermediate to advanced
458 pages
14h 16m
Chinese
Content preview from 可编程网络自动化
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
368
｜
第
10
章
网络架构师
或工程师
设计网络变更
变更管理人
召开冗长且大多
没有什么价值的
变更评审会议
网络工程师
手动实现变更，
然后祈祷变更
能生效
网络
设备
图 10-1：位于网络直接路径上的人
事实证明，这项技术既缓慢又费力，同时也未能给网络变更提供多少额外的可靠性。这基
本上就是“添乱”，同时为进行改动提供了虚假的安全感。
当讨论把人从直接路径中移除的时候，我们谈的是持续集成（
Continuous
Integration
，
CI
），
也就说是，将我们在管理基础设施变更时应该执行的离散任务自动化，把解放出来的技术
资源向管道倾斜，对其做出改进，使之更有效率，如图
10-2
所示。
联网持续集成管道
必要的
同行评审
自动健全
性检查
自动化
部署
用于部署的自动
反馈回路
监控
/
遥测
自动集成
测试
（
lab
）
网络
设备
发布工程师
自动集成和部署管道。
确保进行适当的测试
网络架构师
和工程师
向同行评审系统提交
变更。需要同行评审
才能继续下一步
图 10-2：通过 CI 实现自动变更
这种转向
CI
的根本性改变，让我们得以在网络运维中引入真正的保护措施，防止人为错
误，不再依赖于过去的“变更管理剧院”（
change management theater
）。
10.1
重要的先决条件
要想得心应手地运用本章介绍的这些概念，一定要记住以下几点。
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.