k8s first experience

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最新推荐文章于 2025-04-22 15:22:41 发布

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分类专栏： k8s 文章标签： k8s

本文链接：https://blog.youkuaiyun.com/qq_26464429/article/details/86556422

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本文深入解析Kubernetes的关键概念，如Cluster、Master、Node、Pod、Controller、Deployment、Service和Namespace，阐述了如何创建Kubernetes集群并部署、扩展、公开、更新应用程序。通过实例说明了容器在Pod中的运行方式及不同组件间的交互。

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1.k8s concept

Cluster:
Master调度Node

Pod:
smallest work cell ,run on the node
related containers run on the same pod to share resoures and lifecycle
two ways: one-container-per-Pod ,several—related-containers-per-Pod
for example:
we didn’t need to put Tomcat container and MYSQL container into the same Pod because they exchange data by JDBC ,not by the shared storage and they have different lifecycle.

Controller:run Pod
Deployment Controller manages Pods

Service: explore Pod
Provides IP\port\load balance

Namespace:
Divide the physical cluster into different virtual clusters ,by default has the default and kube-system Namespaces.

2.Create Kubernetes cluster

deploy app

Deployment=app
Pod=sets of container, all the containers in the same pod will share the same IP and Port space(network namespace).
在这里插入图片描述
,explore app,