k8s的GVK是什么

在 Kubernetes 中，GVK 是指 Group、Version 和 Kind 三个字段，用于唯一标识 Kubernetes 资源对象。

• Group 指的是 Kubernetes API 中的资源组，例如 apps、batch、core 等。
• Version 指的是资源对象的 API 版本，例如 v1、v1beta1、v2alpha1 等。
• Kind 指的是资源对象的类型，例如 Pod、Service、Deployment 等。

在 Kubernetes 中，所有的资源对象都必须要有一个 GVK，以便于 Kubernetes 控制器进行操作和管理。对于一个特定的资源对象，可以通过 kubectl api-resources 命令来查看它的 GVK 信息。例如，Pod 资源对象的 GVK 是 core/v1/Pod，其中 core 是资源组，v1 是 API 版本，Pod 是资源对象类型。

查看资源的GVK

查看pod

kubectl explain pod

输出

KIND:       Pod
VERSION:    v1DESCRIPTION:Pod is a collection of containers that can run on a host. This resource iscreated by clients and scheduled onto hosts.FIELDS:apiVersion    <string>APIVersion defines the versioned schema of this representation of an object.Servers should convert recognized schemas to the latest internal value, andmay reject unrecognized values. More info:https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resourceskind  <string>Kind is a string value representing the REST resource this objectrepresents. Servers may infer this from the endpoint the client submitsrequests to. Cannot be updated. In CamelCase. More info:https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kindsmetadata      <ObjectMeta>Standard object's metadata. More info:https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadataspec  <PodSpec>Specification of the desired behavior of the pod. More info:https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-statusstatus        <PodStatus>Most recently observed status of the pod. This data may not be up to date.Populated by the system. Read-only. More info:https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

查看service

kubectl explain service

输出

KIND:       Service
VERSION:    v1DESCRIPTION:Service is a named abstraction of software service (for example, mysql)consisting of local port (for example 3306) that the proxy listens on, andthe selector that determines which pods will answer requests sent throughthe proxy.FIELDS:apiVersion    <string>APIVersion defines the versioned schema of this representation of an object.Servers should convert recognized schemas to the latest internal value, andmay reject unrecognized values. More info:https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resourceskind  <string>Kind is a string value representing the REST resource this objectrepresents. Servers may infer this from the endpoint the client submitsrequests to. Cannot be updated. In CamelCase. More info:https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kindsmetadata      <ObjectMeta>Standard object's metadata. More info:https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadataspec  <ServiceSpec>Spec defines the behavior of a service.https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-statusstatus        <ServiceStatus>Most recently observed status of the service. Populated by the system.Read-only. More info:https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

查看Deployment

kubectl explain Deployment

输出

GROUP:      apps
KIND:       Deployment
VERSION:    v1DESCRIPTION:Deployment enables declarative updates for Pods and ReplicaSets.FIELDS:apiVersion    <string>APIVersion defines the versioned schema of this representation of an object.Servers should convert recognized schemas to the latest internal value, andmay reject unrecognized values. More info:https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resourceskind  <string>Kind is a string value representing the REST resource this objectrepresents. Servers may infer this from the endpoint the client submitsrequests to. Cannot be updated. In CamelCase. More info:https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kindsmetadata      <ObjectMeta>Standard object's metadata. More info:https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadataspec  <DeploymentSpec>Specification of the desired behavior of the Deployment.status        <DeploymentStatus>Most recently observed status of the Deployment.

查看NameSpace

kubectl explain NameSpace

查看Node

kubectl explain Node

参考资料

k8s基础2之GVK与GVR