#Uninstalling Alauda Service Mesh

You can uninstall the Alauda Service Mesh Operator and its resources from your Alauda Container Platform. This can be done through the Alauda Container Platform web console or the command line interface (CLI). Additionally, you have the option to delete the Istio custom resource definitions (CRDs).

#Uninstalling the Alauda Service Mesh v2 Operator and Istio control plane

#Uninstalling via the web console

Uninstalling the Alauda Service Mesh v2 Operator and the Istio control plane from an Alauda Container Platform involves deleting the following components:

• Istio resource
• IstioCNI resource
• Alauda Service Mesh v2 Operator
• istio-system namespace
• istio-cni namespace

You can also optionally remove the Istio custom resource definitions (CRDs).

The Alauda Service Mesh v2 Operator can be uninstalled using the Alauda Container Platform web console.

#Procedure

1. Delete the Istio resource:

   1. In the Alauda Container Platform web console, navigate to Administrator.
   2. Select Marketplace > OperatorHub.
   3. Search for the Alauda Service Mesh v2.
   4. Locate the Alauda Service Mesh v2, and click to select it.
   5. Click All Instances tab.
   6. From the Filter by instance type dropdown, select Istio.
   7. Click the "⋮" button for the Istio resource, then click Delete in the menu.
   8. When prompted, confirm the action by clicking Delete.

2. Delete the IstioCNI resource:

   In the Alauda Service Mesh v2 view of OperatorHub:

   1. Click All Instances tab.
   2. From the Filter by instance type dropdown, select IstioCNI.
   3. Click the "⋮" button for the IstioCNI resource, then click Delete in the menu.
   4. When prompted, confirm the action by clicking Delete.

3. Uninstall the Alauda Service Mesh v2 Operator:

   In the Alauda Service Mesh v2 view of OperatorHub:

   1. Click the Uninstall button in the top-right corner.
   2. Open the Options menu and select Uninstall Operator.
   3. In the confirmation prompt, read the uninstall notice: Removing the operator will not remove any of its custom resource definitions or managed resources. If you have created a resource instance, you need to delete it manually.
   4. Click Uninstall.

4. Delete the istio-system namespace:

   kubectl delete ns istio-system

5. Delete the istio-cni namespace:

   kubectl delete ns istio-cni

#Uninstalling via the CLI

To uninstall the Alauda Service Mesh v2 Operator and the Istio control plane from an Alauda Container Platform, you must delete the following:

• Istio resource
• IstioCNI resource
• Alauda Service Mesh v2 Operator
• istio-system project
• istio-cni project

Optionally, you can also delete the Istio custom resource definitions (CRDs).

The Alauda Service Mesh v2 Operator can be uninstalled using the Alauda Container Platform command line interface (CLI).

#Procedure

1. Delete the Istio resource:

   1. Get the Istio resource name by executing this command:

      kubectl get istio -n istio-system

      Example output

      AME                         NAMESPACE      PROFILE   REVISIONS   READY   IN USE   ACTIVE REVISION   STATUS    VERSION   AGE
      <name_of_custom_resource>   istio-system             1           1       1        default           Healthy   v1.26.3   1d

   2. Use the name from the previous command's output to replace <name_of_custom_resource>, and then run the following to remove it:

      kubectl delete istio/<name_of_custom_resource>

      Example output

      istio.sailoperator.io "<name_of_custom_resource>" deleted

2. Delete the IstioCNI resource:

   1. Get the name of the IstioCNI resource by executing this command:

      kubectl get istioCNI -n istio-system

      Example output

      NAME                        NAMESPACE   PROFILE   READY   STATUS    VERSION   AGE
      <name_of_custom_resource>   istio-cni             True    Healthy   v1.26.3   1d

   2. Use the name from the previous command's output to replace <name_of_custom_resource>, and then run the following to remove it:

      kubectl delete istioCNI/<name_of_custom_resource>

      Example output

      istiocni.sailoperator.io "<name_of_custom_resource>" deleted

3. Delete the istio-system and istio-cni namespaces:

   1. Delete the istio-system namespace with the following command:

      kubectl delete ns istio-system

      Example output

      namespace "istio-system" deleted

   2. Delete the istio-cni namespace with the following command:

      kubectl delete ns istio-cni

      Example output

      namespace "istio-cni" deleted

4. Uninstall the Alauda Service Mesh v2 Operator:

   1. Delete the servicemesh-operator2 subscription:

      kubectl delete subscription servicemesh-operator2 -n sail-operator

      Example output

      subscription.operators.coreos.com "servicemesh-operator2" deleted

#Deleting Istio custom resource definitions

The deletion of Istio custom resource definitions (CRDs) is an optional step.

#Procedure

1. To delete the Istio CRDs, execute the command below:

   kubectl get crds -oname | grep -e istio.io -e sailoperator.io | xargs kubectl delete