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    clarification on namespaces

    Posts: 1
    in LFS258 Class Forum

    Hi,
    i took the knowledge check in APIs and Access.
    in question 5.5 - all objects are restricted to a single namespace. the correct answer is false but in the kubernetes documentation i found this: "Namespaces can not be nested inside one another and each Kubernetes resource can only be in one namespace."

    any clarifications ?

    Comments

    • Posts: 4

      Some objects apply for all namespaces or does not belong to a specific namespace . Try "kubectl api-resources" you will see some resources are not namespaced.

      1. NAME                              SHORTNAMES   APIGROUP                       NAMESPACED   KIND
      2. bindings                                                                      true         Binding
      3. componentstatuses                 cs                                          false        ComponentStatus
      4. configmaps                        cm                                          true         ConfigMap
      5. endpoints                         ep                                          true         Endpoints
      6. events                            ev                                          true         Event
      7. limitranges                       limits                                      true         LimitRange
      8. namespaces                        ns                                          false        Namespace
    • Posts: 2,434

      Hi @gharbi.bdr

      It means that you cannot nest namespaces, that is you cannot create a namespace inside another namespace.

      And, a namespaced Kubernetes resource can only live in one namespace, but if it is deployed in a second namespace, that second deployment is already a separate, isolated instance of that resource.

      Regards,
      -Chris

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