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Chapter 4. Uninstalling confidential containers

You uninstall confidential containers by uninstalling OpenShift sandboxed containers and its components on your workload cluster.

Then, you uninstall the Red Hat build of Trustee Operator and its components. See Uninstalling Red Hat build of Trustee for details.

You uninstall OpenShift sandboxed containers by performing the following tasks:

  1. Delete the workload pods.
  2. Delete the KataConfig custom resource (CR).
  3. Uninstall the OpenShift sandboxed containers Operator.
  4. Delete the KataConfig custom resource definition (CRD).
Important

You must delete the workload pods before deleting the KataConfig CR. The pod names usually have the prefix podvm and custom tags, if provided. If you deployed OpenShift sandboxed containers on a cloud provider and any resources remain after following these procedures, you might receive an unexpected bill for those resources from your cloud provider. Once you complete uninstalling OpenShift sandboxed containers on a cloud provider, check the cloud provider console to ensure that the procedures deleted all of the resources.

4.1. Deleting workload pods
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You can delete the OpenShift sandboxed containers workload pods by using the CLI.

Prerequisites

  • You have the JSON processor (jq) utility installed.

Procedure

  1. Search for the pods by running the following command: 

    $ oc get pods -A -o json | jq -r '.items[] | \
  select(.spec.runtimeClassName == "<runtime>").metadata.name'
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  2. Delete each pod by running the following command: 

    $ oc delete pod <pod>
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Important

When uninstalling OpenShift sandboxed containers deployed using a cloud provider, you must delete all of the pods. Any remaining pod resources might result in an unexpected bill from your cloud provider.

4.2. Deleting the KataConfig custom resource
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You delete the KataConfig custom resource (CR) by using the command line.

Procedure

  1. Delete the KataConfig CR by running the following command: 

    $ oc delete kataconfig example-kataconfig
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  2. Verify the CR removal by running the following command: 

    $ oc get kataconfig example-kataconfig
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    Example output

    No example-kataconfig instances exist
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Important

You must ensure that all pods are deleted. Any remaining pod resources might result in an unexpected bill from your cloud provider.

You uninstall the OpenShift sandboxed containers Operator by using the command line.

Procedure

  1. Delete the subscription by running the following command: 

    $ oc delete subscription sandboxed-containers-operator -n openshift-sandboxed-containers-operator
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  2. Delete the namespace by running the following command: 

    $ oc delete namespace openshift-sandboxed-containers-operator
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4.4. Deleting the KataConfig CRD
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You delete the KataConfig custom resource definition (CRD) by using the command line.

Prerequisites

  • You have deleted the KataConfig custom resource.
  • You have uninstalled the OpenShift sandboxed containers Operator.

Procedure

  1. Delete the KataConfig CRD by running the following command: 

    $ oc delete crd kataconfigs.kataconfiguration.openshift.io
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  2. Verify that the CRD was deleted by running the following command: 

    $ oc get crd kataconfigs.kataconfiguration.openshift.io
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    Example output

    Unknown CRD kataconfigs.kataconfiguration.openshift.io
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