Offboarding Namespaces

Introduction

Offboarding namespaces from slice is an easy and straightforward process. This topic describes the steps to offboard namespaces before you delete your slice.

caution

If your application is installed on multiple clusters within a slice, you must complete these steps for each cluster.

Deleting the ServiceExport for Each Application

info

If a ServiceExport was created in the application namespace, it must be deleted first.

info

Deleting the ServiceExport removes the corresponding ServiceImport automatically on all the clusters of the slice.

Variables	Description
<cluster name>	The name of the cluster the application is deployed on.
<serviceexport name>	The name of the service export that you want to delete.
<namespace>	The namespace the application is deployed on.

Switch the contexts to the cluster you deployed the application on:

kubectx <cluster name>

Use the following command to delete the ServiceExport from the cluster:

kubectl delete serviceexport <serviceexport name> -n <application namespace>

Offboarding Namespaces from the Slice Configuration

To offboard the namespace from a slice, delete the namespace and the associated clusters under the applicationNamespaces in the slice configuration file as illustrated below.

  namespaceIsolationProfile:
    applicationNamespaces:
     - namespace: iperf
       clusters:
       - '*'
     - namespace: bookinfo
       clusters:
       - '*'

For example, in the above slice configuration YAML file, if you want to offboard the Bookinfo namespace from all clusters, edit the slice configuration YAML file and remove it from applicationNamespaces as illustrated below.

namespaceIsolationProfile:
    applicationNamespaces:
     - namespace: iperf
       clusters:
       - '*'

To delete a slice, you must remove all the namespaces and the corresponding clusters. So, edit the slice configuration YAML file to remove them. After you remove the namespaces and the corresponding clusters, the application namespace configuration looks as illustrated below.

namespaceIsolationProfile:
    applicationNamespaces:

Apply the slice configuration YAML to update the offboarded namespaces.

kubectl apply -f <slice configuration>.yaml -n <project namespace>

success

You have successfully offboarded the namespaces from the slice.