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1.pods_with_yaml.md

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  • Kubernetes definition file always contains four top level fields(must have):
apiVersion:
kind:
metadata:


spec:
  • Explain the complete Pod object kubectl explain --recursive=false pods
$ kubectl explain --recursive=false pods
KIND:     Pod
VERSION:  v1

DESCRIPTION:
     Pod is a collection of containers that can run on a host. This resource is
     created 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, and may reject unrecognized values. More info:
     https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources

   kind	<string>
     Kind is a string value representing the REST resource this object
     represents. Servers may infer this from the endpoint the client submits
     requests to. Cannot be updated. In CamelCase. More info:
     https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds

   metadata	<Object>
     Standard object's metadata. More info:
     https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata

   spec	<Object>
     Specification of the desired behavior of the pod. More info:
     https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

   status	<Object>
     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
  • Explain any field of Pod object(e.g., Pod's metadata).
    • use --recursive=false to get descriptions.
$ kubectl explain --recursive=true pods.metadata
KIND:     Pod
VERSION:  v1

RESOURCE: metadata <Object>

DESCRIPTION:
     Standard object's metadata. More info:
     https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata

     ObjectMeta is metadata that all persisted resources must have, which
     includes all objects users must create.

FIELDS:
   annotations	<map[string]string>
   clusterName	<string>
   creationTimestamp	<string>
   deletionGracePeriodSeconds	<integer>
   deletionTimestamp	<string>
   finalizers	<[]string>
   generateName	<string>
   generation	<integer>
   labels	<map[string]string>
   managedFields	<[]Object>
      apiVersion	<string>
      fieldsType	<string>
      fieldsV1	<map[string]>
      manager	<string>
      operation	<string>
      time	<string>
   name	<string>
   namespace	<string>
   ownerReferences	<[]Object>
      apiVersion	<string>
      blockOwnerDeletion	<boolean>
      controller	<boolean>
      kind	<string>
      name	<string>
      uid	<string>
   resourceVersion	<string>
   selfLink	<string>
   uid	<string>
  • Commands:
    • kubectl explain --recursive=false pods
    • kubectl explain --recursive=true pods.metadata
    • kubectl get pods
    • kubectl describe pod <pod_name>
    • kubectl delete deployment