View source for Kubernetes

[https://kubernetes.io Kubernetes] is a [[container orchestration system]], whose documentation can be found here<ref>Kuberenetes Official Site, https://kubernetes.io/docs/home/, last accessed: July 20, 2020</ref>. It is often abbreviated as [[K8s]]. The way to think about Kubernetes is to treat it as a networked computer, and its main programming language is called [[YAML]], which is a nested data structure of key-value pairs. In other words, Kubernetes is a kind of programming environment that is made of named [[services]], and networked [[port]]s as [[endpoint]]s. 

==History and Technical Challenges==
An official documentary video is available here<ref>{{:Video/Kubernetes: The Documentary PART 1}}</ref>. The main approach to configure Kubernetes is to use [[yaml]] file that specified [[key-value pair]]s of resources and more specifically relations between [[endpoint]]s. However, this approach is like programming complex mathematical formula using just low level machine instructions. It is very easy to make mistakes. Some solutions such as [[Helm]] is available, but the essence of Kubernetes is its [[service composability]], which is not trivial for most people who are newly introduced to Kubernetes, and that is what [[PKC DevOps]] will be dedicated to reduce the complexity of learning and using Kubernetes.

==How to learn Kubernetes==

Some of the more useful books in learning Kubernetes can be found here:
# [[Kasten]] provides online training and badges [https://learning.kasten.io/?hsCtaTracking=e5db0ce9-bd37-409d-8244-be2d1698de83%7C9f78775d-0c38-4838-a2c8-7377c2995a94 Learning Kasten/Kubernetes]
# Cloud Native DevOps with Kubernetes<ref>{{:BOOK/Cloud Native DevOps with Kubernetes}}</ref>
# NGINX Cookbook: Advanced Recipes for High-Performance Load Balancing<ref>{{:BOOK/NGINX Cookbook}}</ref>
# Awesome Kubernetes<ref>[https://www.linkedin.com/in/ramitsurana/ Ramit Surana], https://github.com/ramitsurana/awesome-kubernetes, last accessed: August 13, 2021</ref>: A Github Project that contains lots of Kubernetes references
# Cloud Native Technology Open Course (Chinese), <ref>CNCF x Alibaba, https://edu.aliyun.com/roadmap/cloudnative, last accessed: August 13, 2021</ref> [https://edu.aliyun.com/roadmap/cloudnative 云原生技术公开课]，阿里云大学
## Duing lecture 4<ref>CNCF x Alibaba, Lecture 4, 理解 Pod 和容器设计模式， https://edu.aliyun.com/lesson_1651_13079, last accessed: August 13, 2021</ref> of the above mentioned course: 云原生技术公开课, one critical assumption about Kubernetes is revealed: All of the Design Patterns in Kubernetes is to enable Decoupling and Reuse (To attain system-level [[Composability]]).
# [[Video/Kubernetes Kubectl Proxy vs NodePort vs LoadBalancer vs Ingress|Kubectl Proxy vs NodePort vs LoadBalancer vs Ingress]]
# [[Video/Keycloak as an Identity Provider & OpenID Connect Token Issuer|Keycloak as an Identity Provider & OpenID Connect Token Issuer]]
# [https://mp.weixin.qq.com/s/bQsnXFEWkCbJ8OPf_76ljA Flannel的两种模式解析（VXLAN、host-gw)]
# [[A Systematic explanation of Kubernetes]] by [[Sean Wingert]]

==Installing Kubernetes==
For instructions to install Kubernetes, please see this page: [[K8s Installation]].

{{:Installing Kubernetes with Ansible}}

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==Related Pages==
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[[Category:Kubernetes]]
[[Category:Container orchestration system]]
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