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Namespace Management

In Kubernetes, namespaces provide a way to isolate groups of resources within a single cluster. Some of the benefits of namespaces are:


  • They can be used to partition resources among multiple users via resource quota – where each namespace has its own set of resources – without having to set up multiple physical clusters.

  • You can configure Role-Based Access Control (RBAC) based on namespaces. For information about configuring namespaces and RBAC, check out RBAC and NS Support.

  • Namespaces can be used for different purposes such as testing, development, and production.

  • You can use namespaces to help prevent resource naming conflicts. Resource names must be unique within a namespace but not across namespaces.

  • In environments that have hybrid containerized and virtualized applications, a separate namespace can be used to isolate virtual machines (VMs). For information about a VM environment in Palette, check out Virtual Machine Management.

Create a Namespace​

The following steps will guide you on how to create a namespace.

Prerequisites​

  • An active cluster.

  • Permission to create a namespace.

  • A unique namespace name.

Create a Namespace in a Cluster​

  1. Log in to Palette as a tenant admin.

  2. Navigate to the left Main Menu and click on Clusters.

  3. Select the cluster in which you want to create a namespace.

  4. Navigate to the Workloads > Namespaces tab, and click the Manage Namespaces button.


    The Settings pane displays with RBAC preselected and the Namespaces tab opened by default.

    Cluster Settings pane with three arrows that point respectively to Namespace Name field, Add to List button, and the location where the namespace is listed

  5. Type a unique namespace name in the Namespace name or Regex field and click Add to List at right.

  6. You can assign resource quotas now or at a later time. To learn how, check out Assign Resource Quotas.


    For details on how to configure RBAC for namespaces, check out the RBAC and NS Support guide.

Validate​

Validate that the namespace was successfully created.


  1. Log in to Palette as a tenant admin.

  2. Navigate to the left Main Menu and click on Clusters.

  3. Select the cluster that contains the namespace you created and view its details.

  4. In the Settings pane, click RBAC > Namespaces tab.


    The namespace you created will be listed under Workspace Quota.

Assign Resource Quotas​

You can assign resource quotas for resource sharing among multiple users who have access to a namespace.

Prerequisites​

  • A running cluster with at least one namespace.

Assign Resource Quotas to a Namespace​

  1. Log in to Palette as a tenant admin.

  2. Navigate to the left Main Menu and click on Clusters.

  3. Select the cluster with the namespace to which you will assign workspace quotas.

  4. Navigate to the Workloads > Namespaces tab, and click the Manage Namespaces button.

  5. The Settings pane displays with RBAC > Namespaces preselected.

  6. Select the namespace listed in the Workspace Quota section.

Cluster Settings pane displaying Workspace Quota section of Namespaces tab


  1. Type the number of CPU and Memory to allocate to the namespace, and save your changes.

Delete a Namespace​

When you delete a namespace, all the resources that were created within the namespace will also be deleted, such as pods, services and endpoints, config maps, and more.

Prerequisites​

  • Ensure that no other resources depend on the namespace being deleted.

Delete a Namespace from a Cluster​

  1. Navigate to the left Main Menu and click on Clusters.

  2. Select the cluster in which you want to create a namespace.

  3. Navigate to the Workloads > Namespaces tab, and click the Manage Namespaces button. The Settings pane displays with RBAC preselected and the Namespaces tab opened by default.

  4. Select the namespace you want to delete, which is listed in the Workspace Quota section, and click the trash can icon.

Validate​

Validate that the namespace was successfully deleted.

  1. Log in to Palette as a tenant admin.

  2. Navigate to the left Main Menu and click on Clusters.

  3. Select the cluster that contains the namespace you want to delete and view its details.

  4. In the Settings pane, click RBAC > Namespaces tab.

The namespace you created is no longer listed under Workspace Quota.