September 2020
Intermediate to advanced
526 pages
8h 23m
Chinese
book
Google SRE工作手册
by Betsy Beyer, Niall Richard Murphy, David K. Rensin, Kent Kawahara, Stephen Thorne
Content preview from Google SRE工作手册
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消除琐事
｜
139
设置交换机为
undrain状态
内存错误
告警
设置交换机为
undrain状态
添加问题到数据库
新的修复服务
受理修复
设置交换机为
drain状态
线卡以前
发生过故障？
是
否
执行交换机电源
开/关操作
重新安装和
配置交换机
在硬件运维UI
中开工单
受理工单
替换线卡
关闭工单
自动化触发
重新安装和
配置交换机
硬件运维人员
工程师
图
6
-
7
：自动化的 Jupiter 内存错误修复工作流程
140
｜
第
6
章
经验教训
在我们投入精力实现网络修复自动化的几年中，我们学到了很多关于如何有效减少
琐事的通用经验教训。
UI
不应该引入开销或复杂性
对基于
Saturn
的线卡而言，更换线卡需要设置整个交换机为
drain
状态。在整个维修
的过程中，如果过早将整个交换机设置到
drain
状态，这就意味着在等待更换部件和
技术人员的过程中，网络失去了这台交换机上所有线卡的工作容量。我们在
UI
中引
入了一个名为“准备组件”的按钮，允许技术人员在准备更换卡之前，才将整个交
换机从流量中隔离出来，从而消除了交换机其余部分的不必要停机时间（请参阅图
6-5
中的“按下设置交换机的
drain
状态按钮”）。
这种在
UI
和修复工作流程方面的设计，引入了许多意想不到的问题：
•
按下按钮后，技术人员看不到关于设置
drain
状态的进度，而只能需等待进一步
操作的许可。 ...
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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.