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.
104
｜
第
4
章
name: ats.cnat.programming-kubernetes.info
spec:
...
shortNames:
- at
之后，
kubectl get at
就可以列出命名空间中的所有
cnat
的
CR
了。
另外，
CR
与其他的资源一样，也可以是某个类别的一部分。最常用的类别是
all
，比如
kubectl get all
。它可以列出集群中所有与用户相关的资源，包
括
Pod
和
Service
等。
在集群中定义
CR
时，可以通过在
CRD
中指定
categories
字段，加入一个
已有的类别或创建一个新的类别。
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
name: ats.cnat.programming-kubernetes.info
spec:
...
categories:
- all
有了这样的定义，
kubectl get all
也可以列出命名空间中所有的
cnat CR
了。
4.3.3
打印列
kubectl
命令行工具使用服务器端的逻辑来渲染
kubectl get
的输出结果。也
就是说，它是向
API
服务器去查询得到要展示的字段列表以及每一行的值。
自定义资源也支持服务器端的打印列，通过
additionalPrinterColumns
来指
定。它们之所以被称为是“
additional
”（额外）的，是因为第一个列展示的
总是对象的名字，这些打印列可以通过这样方式来定义： ...
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.