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.
Device Plugin are containers running in Kubernetes that provide access to a vendor specific resource. Device Plugins advertise these resources to kubelet and can be deployed manually or as a DeamonSet, rather than writing custom Kubernetes code.
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.
HostAliases is an optional list of hostnames and IP addresses that will be injected into the Pod’s hosts file if specified. This is only valid for non-hostNetwork Pods.
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。
Also known as: PDB A Pod Disruption Budget allows an application owner to create an object for a replicated application, that ensures a certain number or percentage of Pods with an assigned label will not be voluntarily evicted at any point in time. PDBs cannot prevent an involuntary disruption, but will count against the budget. [+]
A Pod Disruption Budget allows an application owner to create an object for a replicated application, that ensures a certain number or percentage of Pods with an assigned label will not be voluntarily evicted at any point in time. PDBs cannot prevent an involuntary disruption, but will count against the budget.
The Pod Lifecycle is a high level summary of where a Pod is in its lifecyle. A Pod’s status field is a PodStatus object, which has a phase field that displays one of the following phases: Running, Pending, Succeeded, Failed, Unknown, Completed, or CrashLoopBackOff.
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.
rkt is an application {% glossary_tooltip text=“container” term_id=“container” %} engine featuring a {% glossary_tooltip text=“pod” term_id=“pod” %}-native approach, a pluggable execution environment, and a well-defined surface area. rkt allows users to apply different configurations at both the pod and application level and each pod executes directly in the classic Unix process model, in a self-contained, isolated environment.
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。
On Unix-like systems, sysctl is both the name of the tool that administrators
use to view and modify these settings, and also the system call that the tool
uses.
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。
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