June 2021
Intermediate to advanced
335 pages
5h 50m
Chinese
Content preview from Kubernetes编程
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.
自定义资源进阶
｜
307
minimum: 42
required: ["bar"]
违反结构化
Schema
规则的情况会在
CRD
的
NonStructural
条件中被报告
出来。
你可以自己验证“
4.3.1
自定义资源合法性验证”中
cnat
例子的
Schema
以及
pizza CRD
示例（
http://bit.ly/31MrFcO
）中的
Schema
是不是结构化的。
9.3.2
剪裁或保留不能识别的字段
CRD
在传统上会把
JSON
数据（可能是通过验证的）原样地保存在
etcd
中。
这就意味着很多不能识别的字段（有对应
OpenAPI v3
验证
Schema
的情况下）
也会被保存下来。这与
Kubernetes
原生的资源（比如
Pod
）的行为不同。如
果用户为
Pod
指定了一个不能被识别的字段
spec.randomField
，
API
服务器
的
HTTPS
端点能接受这样的请求，但这个字段会在把
Pod
对象写入
etcd
时
被抛弃（我们称这个过程为“剪裁”）。
如果定义了一个结构化的
OpenAPI v3
验证
Schema
（可以是通过全局的
spec.validation.openAPIV3Schema
或为每个版本单独定义），我们就可以通
过把
spec.preserveUnknownFields
设置为
false
来启用剪裁功能（它会在创
建或更新对象时丢弃不能被识别的字段）。
我们来看看
cnat
的例子
注
2
。在
Kubernetes 1.15
集群中，我们这样来启用剪
裁功能：
apiVersion: apiextensions.k8s.io/v1beta1 ...
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.