转载自 https://blog.csdn.net/yrx420909/article/details/105678325

1.什么是资源清单

在k8s中，一般使用yaml格式的文件来创建符合我们预期期望的pod，这样的yaml文件我们一般称为资源清单

2.资源清单的格式

  1. apiVersion: group/apiversion  # 如果没有给定group名称，那么默认为croe，可以使用kubectl api-versions 获取当前k8s版本上所有的apiVersion版本信息(每个版本可能不同)
  2. kind:       #资源类别
  3. metadata：  #资源元数据
  4.    name
  5.    namespace  #k8s自身的namespace
  6.    lables
  7.    annotations   #主要目的是方便用户阅读查找
  8. spec:期望的状态（disired state）
  9. status：当前状态，本字段有kubernetes自身维护，用户不能去定义

配置清单主要有五个一级字段，其中status用户不能定义，由k8s自身维护

3.获取资源的apiVersion版本及资源配置的帮助

1)获取apiVersion版本信息

  1. [root@k8s-5-138 pod_template]# kubectl api-versions
  2. admissionregistration.k8s.io/v1
  3. admissionregistration.k8s.io/v1beta1
  4. apiextensions.k8s.io/v1
  5. apiextensions.k8s.io/v1beta1
  6. apiregistration.k8s.io/v1
  7. apiregistration.k8s.io/v1beta1
  8. apps/v1
  9. authentication.k8s.io/v1
  10. authentication.k8s.io/v1beta1
  11. authorization.k8s.io/v1
  12. authorization.k8s.io/v1beta1
  13. autoscaling/v1
  14. autoscaling/v2beta1
  15. autoscaling/v2beta2
  16. batch/v1
  17. batch/v1beta1
  18. certificates.k8s.io/v1beta1
  19. coordination.k8s.io/v1
  20. coordination.k8s.io/v1beta1
  21. discovery.k8s.io/v1beta1
  22. events.k8s.io/v1beta1
  23. extensions/v1beta1
  24. networking.k8s.io/v1
  25. networking.k8s.io/v1beta1
  26. node.k8s.io/v1beta1
  27. policy/v1beta1
  28. rbac.authorization.k8s.io/v1
  29. rbac.authorization.k8s.io/v1beta1
  30. scheduling.k8s.io/v1
  31. scheduling.k8s.io/v1beta1
  32. storage.k8s.io/v1
  33. storage.k8s.io/v1beta1
  34. v1

2)获取资源的apiVersion版本信息

  1. [root@k8s-5-138 pod_template]# kubectl explain DaemonSet
  2. KIND:     DaemonSet
  3. VERSION:  apps/v1
  5. DESCRIPTION:
  6.      DaemonSet represents the configuration of a daemon set.
  8. FIELDS:
  9.    apiVersion    <string>
  10.      APIVersion defines the versioned schema of this representation of an
  11.      object. Servers should convert recognized schemas to the latest internal
  12.      value, and may reject unrecognized values. More info:
  13.      https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources
  15.    kind    <string>
  16.      Kind is a string value representing the REST resource this object
  17.      represents. Servers may infer this from the endpoint the client submits
  18.      requests to. Cannot be updated. In CamelCase. More info:
  19.      https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
  21.    metadata    <Object>
  22.      Standard object's metadata. More info:
  23.      https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
  25.    spec    <Object>
  26.      The desired behavior of this daemon set. More info:
  27.      https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
  29.    status    <Object>
  30.      The current status of this daemon set. This data may be out of date by some
  31.      window of time. Populated by the system. Read-only. More info:
  32.      https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

可以看的出来，不同的资源可能属于不同的apiVersion版本