This glossary is intended to be a comprehensive, standardized list of Kubernetes terminology. It includes technical terms that are specific to K8s, as well as more general terms that provide useful context.
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The inner components of Kubernetes.
Related to Kubernetes open-source development.
A resource type that Kubernetes supports by default.
Supported customizations of Kubernetes.
Relevant for a first-time user of Kubernetes.
How Kubernetes components talk to each other (and to programs outside the cluster).
Starting and maintaining Kubernetes.
Keeping Kubernetes applications safe and secure.
How Kubernetes applications handle persistent data.
Software that makes Kubernetes easier or better to use.
An init container lets you separate initialization details that are important for the overall
workloadWorkloads are objects you use to manage and run your containers on the cluster., and that don’t need to keep running
once the application container has started.
If a pod doesn’t have any init containers configured, all the containers in that pod are app containers.
Activities such as upgrading the clusters, implementing security, storage, ingress, networking, logging and monitoring, and other operations involved in managing a Kubernetes cluster. [+]
Activities such as upgrading the clusters, implementing security, storage, ingress, networking, logging and monitoring, and other operations involved in managing a Kubernetes cluster.
Most cluster administrators will use a hosted or distribution instance of Kubernetes. As a result, most Kubernetes users will need to install extensions and fewer will need to author new ones.
Kubernetes 资源和”意向记录”都是作为 API 对象储存的，并可以通过对 API 的 RESTful 调用进行修改。
API 允许以声明方式管理配置。
用户可以直接和 Kubernetes API 交互，也可以通过 kubectl 这样的工具进行交互。
核心的 Kubernetes API 是很灵活的，可以扩展以支持定制资源。
Application and systems logs can help you understand what is happening inside your cluster. The logs are particularly useful for debugging problems and monitoring cluster activity.
Pod Priority gives the ability to set scheduling priority of a Pod to be higher and lower than other Pods — an important feature for production clusters workload.
Pod Lifecycle是 Pod 在其生命周期中的概括总结。 Pod 的 ‘status’ 字段是 PodStatus对象，它有一个 ‘phase’ 字段，显示以下阶段之一 ：Running、Pending、Succeeded、Failed、Unknown、Completed 或者 CrashLoopBackOff。
QoS Class (Quality of Service Class)) provides a way for Kubernetes to classify Pods within the cluster into several classes and make decisions about scheduling and eviction.
QoS Class of a Pod is set at creation time based on its compute resources requests and limits settings. QoS classes are used to make decisions about Pods scheduling and eviction.
Kubernetes can assign one of the following QoS classes to a Pod: Guaranteed, Burstable or BestEffort.
和
DeploymentDeployment 是管理应用副本的 API 对象。 相同的是，StatefulSet 管理了基于相同容器定义的一组 Pod。但和 Deployment 不同的是，StatefulSet 为它们的每个 Pod 维护了一个固定的 ID。这些 Pod 是基于相同的声明来创建的，但是不能相互替换：无论怎么调度，每个 Pod 都有一个永久不变的 ID。
网络策略帮助您声明式地配置允许哪些 Pod 之间接、哪些命名空间之间允许进行通信，并具体配置了哪些端口号来执行各个策略。NetworkPolicy 资源使用标签来选择 Pod，并定义了所选 Pod 可以接受什么样的流量。网络策略由网络提供商提供的并被 Kubernetes 支持的网络插件实现。请注意，当没有控制器实现网络资源时，创建网络资源将不会生效。
Device Plugins are containers running in Kubernetes that provide access to a vendor specific resource. aka: tags: - fundamental - extension --- -- 驱动插件是运行在 Kubernetes 中的容器，它提供对供应商特定资源的访问。驱动插件将这些资源发布到 kubelet，并且可以手动部署或做为 DeamonSet 部署，而不用编写定制的 Kubernetes 代码。 [+]