Uninstall

If you no longer need your Gloo Mesh environment, you can deregister workload clusters and uninstall the Gloo Mesh management plane from your management cluster. You can also optionally uninstall Istio and the Bookinfo sample app.

Before you begin link

Save the names and contexts of the clusters you want to uninstall Gloo Mesh Enterprise from.

  export MGMT_CLUSTER=<management-cluster>
export REMOTE_CLUSTER1=<remote-cluster1>
export REMOTE_CLUSTER2=<remote-cluster2>
  

  export MGMT_CONTEXT=<management-cluster-context>
export REMOTE_CONTEXT1=<remote-cluster1-context>
export REMOTE_CONTEXT2=<remote-cluster2-context>
  

Uninstall Istio link

Uninstall Istio from each workload cluster. Note that if you used the Istio lifecycle manager, you must complete this section to uninstall Istio before you uninstall any Gloo Mesh management or agent components.

1. Uninstall the Istio control plane and gateway proxies. These steps differ depending on how you installed them.

   1. Delete the GatewayLifecycleManager resources for the gateways that you installed.

        kubectl delete GatewayLifecycleManager istio-eastwestgateway -n gloo-mesh --context $MGMT_CONTEXT
      kubectl delete GatewayLifecycleManager istio-ingressgateway -n gloo-mesh --context $MGMT_CONTEXT
      kubectl delete GatewayLifecycleManager istio-egressgateway -n gloo-mesh --context $MGMT_CONTEXT
        

   2. Verify that the gateway resources are removed before you proceed to the next step.

        kubectl get all -n gloo-mesh-gateways --context $REMOTE_CONTEXT1
      kubectl get all -n gloo-mesh-gateways --context $REMOTE_CONTEXT2
        

   3. Delete the IstioLifecycleManager for the istiod control plane. Note that your resource might have a different name.

        kubectl delete IstioLifecycleManager istiod-control-plane -n gloo-mesh --context $MGMT_CONTEXT
        

   4. Verify that the Istio resources are removed before you proceed to the next step.

        # Change the revision as needed
      kubectl get all -n gm-iop-1-20 --context $REMOTE_CONTEXT1
      kubectl get all -n istio-system --context $REMOTE_CONTEXT1
        

   5. Delete the Istio namespaces from the workload clusters.

        kubectl delete ns istio-system --context $REMOTE_CONTEXT1
      kubectl delete ns gloo-mesh-gateways --context $REMOTE_CONTEXT1
        

        kubectl delete ns istio-system --context $REMOTE_CONTEXT2
      kubectl delete ns gloo-mesh-gateways --context $REMOTE_CONTEXT2
        

   1. Find the name of your Istio Helm chart releases in the istio-ingress namespace, such as istio-ingressgateway-1-20.

        helm ls -n istio-ingress
        

   2. Delete the Helm release for the ingress gateway.

        helm delete istio-ingressgateway-1-20 -n istio-ingress
        

   3. Find the name of your Istio Helm chart releases in the istio-eastwest namespace, such as istio-eastwestgateway-1-20.

        helm ls -n istio-eastwest
        

   4. Delete the Helm release for the ingress and east-west gateways.

        helm delete istio-eastwestgateway-1-20 -n istio-eastwest
        

   5. Find the name of your Istio Helm chart release in the istio-system namespace, such as istiod-1-20.

        helm ls -n istio-system
        

   6. Delete the Helm release for the istiod control plane.

        helm delete istiod-1-20 -n istio-system
        

   7. Delete the Istio namespaces.

        kubectl delete ns istio-system --context $REMOTE_CONTEXT1
      kubectl delete ns istio-ingress --context $REMOTE_CONTEXT1
      kubectl delete ns istio-eastwest --context $REMOTE_CONTEXT1
      kubectl delete ns istio-config --context $REMOTE_CONTEXT1
        

        kubectl delete ns istio-system --context $REMOTE_CONTEXT2
      kubectl delete ns istio-ingress --context $REMOTE_CONTEXT2
      kubectl delete ns istio-eastwest --context $REMOTE_CONTEXT2
      kubectl delete ns istio-config --context $REMOTE_CONTEXT2
        

2. OpenShift installations: Revoke the extra permissions and resources required for OpenShift to run Istio.

   1. Revoke the Istio namespace ID permissions for the Istio service accounts.

        oc adm policy remove-scc-from-group anyuid system:serviceaccounts:istio-system --context $REMOTE_CONTEXT1
      oc adm policy remove-scc-from-group anyuid system:serviceaccounts:gloo-mesh-gateways --context $REMOTE_CONTEXT1
      # Update revision as needed
      oc adm policy remove-scc-from-group anyuid system:serviceaccounts:gm-iop-1-20 --context $REMOTE_CONTEXT1
        

        oc adm policy remove-scc-from-group anyuid system:serviceaccounts:istio-system --context $REMOTE_CONTEXT2
      oc adm policy remove-scc-from-group anyuid system:serviceaccounts:gloo-mesh-gateways --context $REMOTE_CONTEXT2
      # Update revision as needed
      oc adm policy remove-scc-from-group anyuid system:serviceaccounts:gm-iop-1-20 --context $REMOTE_CONTEXT2
        

   2. Revoke the Istio namespace ID permissions for sample app project service accounts.

        oc --context $REMOTE_CONTEXT1 adm policy remove-scc-from-group anyuid system:serviceaccounts:bookinfo
      oc --context $REMOTE_CONTEXT1 adm policy remove-scc-from-group anyuid system:serviceaccounts:httpbin
      oc --context $REMOTE_CONTEXT1 adm policy remove-scc-from-group anyuid system:serviceaccounts:helloworld
      oc --context $REMOTE_CONTEXT1 adm policy remove-scc-from-group anyuid system:serviceaccounts:gloo-mesh
        

        oc --context $REMOTE_CONTEXT2 adm policy remove-scc-from-group anyuid system:serviceaccounts:bookinfo
      oc --context $REMOTE_CONTEXT2 adm policy remove-scc-from-group anyuid system:serviceaccounts:httpbin
      oc --context $REMOTE_CONTEXT2 adm policy remove-scc-from-group anyuid system:serviceaccounts:helloworld
      oc --context $REMOTE_CONTEXT2 adm policy remove-scc-from-group anyuid system:serviceaccounts:gloo-mesh
        

   3. Delete the NetworkAttachmentDefinition resources and the Istio namespace ID permissions for your workload projects.

        oc --context $REMOTE_CONTEXT1 adm policy remove-scc-from-group anyuid system:serviceaccounts:<workload_projects>
      oc --context $REMOTE_CONTEXT2 adm policy remove-scc-from-group anyuid system:serviceaccounts:<workload_projects>
        

        oc --context $REMOTE_CONTEXT1 delete network-attachment-definition istio-cni -n <workload_projects>
      oc --context $REMOTE_CONTEXT2 delete network-attachment-definition istio-cni -n <workload_projects>
        

3. Repeat these steps for each cluster that was registered with Gloo Mesh and that ran an Istio service mesh.

Deregister workload clusters link

Uninstall the Gloo Mesh data plane components from the workload clusters.

1. Uninstall the Gloo agent that runs on each workload cluster.

   1. Deregister cluster1.

        meshctl cluster deregister \
        --kubecontext $MGMT_CONTEXT \
        --remote-context $REMOTE_CONTEXT1 \
        $REMOTE_CLUSTER1
        

      Example output:

        Deregistering cluster: cluster1
      Finished uninstalling release gloo-mesh-agent
      Successfully deregistered cluster: cluster1
        

   2. Deregister cluster2.

        meshctl cluster deregister \
        --kubecontext $MGMT_CONTEXT \
        --remote-context $REMOTE_CONTEXT2 \
        $REMOTE_CLUSTER2
        

   3. If you maintained a separate gloo-agent-addons Helm release, uninstall the release. Note that your add-ons might be installed in a different namespace, such as gloo-mesh-addons.

        helm uninstall gloo-agent-addons -n gloo-mesh --kube-context $REMOTE_CONTEXT1
      helm uninstall gloo-agent-addons -n gloo-mesh --kube-context $REMOTE_CONTEXT2
        

   4. Uninstall the agent Helm releases. Note that your Helm release might have a different name.

        helm uninstall gloo-platform -n gloo-mesh --kube-context $REMOTE_CONTEXT1
      helm uninstall gloo-platform -n gloo-mesh --kube-context $REMOTE_CONTEXT2
        

   5. Delete the corresponding KubernetesCluster resources from the management cluster.

        kubectl delete kubernetescluster $REMOTE_CLUSTER1 $REMOTE_CLUSTER2 -n gloo-mesh --context $MGMT_CONTEXT
        

   6. Delete the relay secrets from each workload cluster, as you cannot reuse the same secret if you decide to re-register the agent later.

        kubectl delete secret -n gloo-mesh relay-client-tls-secret --context $REMOTE_CONTEXT1
      kubectl delete secret -n gloo-mesh relay-identity-token-secret --context $REMOTE_CONTEXT1
      kubectl delete secret -n gloo-mesh relay-root-tls-secret --context $REMOTE_CONTEXT1
        

        kubectl delete secret -n gloo-mesh relay-client-tls-secret --context $REMOTE_CONTEXT2
      kubectl delete secret -n gloo-mesh relay-identity-token-secret --context $REMOTE_CONTEXT2
      kubectl delete secret -n gloo-mesh relay-root-tls-secret --context $REMOTE_CONTEXT2
        

2. Uninstall the Gloo CRDs Helm releases in each workload cluster.

     helm uninstall gloo-platform-crds -n gloo-mesh --kube-context $REMOTE_CONTEXT1
   helm uninstall gloo-platform-crds -n gloo-mesh --kube-context $REMOTE_CONTEXT2
     

3. Delete the gloo-mesh namespaces from each workload cluster.

     kubectl --context $REMOTE_CONTEXT1 delete namespace gloo-mesh
   kubectl --context $REMOTE_CONTEXT2 delete namespace gloo-mesh
     

4. Repeat these steps for any other cluster that is registered with Gloo Mesh. For example, if you ran the management plane in a cluster that was also registered, repeat these steps for the MGMT_CLUSTER and specify the MGMT_CONTEXT. If you registered multiple workload clusters, repeat these steps for each workload cluster.

Uninstall the management plane link

Uninstall the Gloo Mesh management plane components from the management cluster.

1. Uninstall the Gloo Mesh management plane components.

     meshctl uninstall --purge --kubecontext $MGMT_CONTEXT
     

   Note: If you see a warning such as release gloo-platform does not exist, nothing to uninstall, use the Helm tab instead.

     meshctl uninstall --kubecontext $MGMT_CONTEXT
     

   Note: If you see a warning such as release gloo-platform does not exist, nothing to uninstall, use the Helm tab instead.

   Note that your Helm release might have a different name.

     helm uninstall gloo-platform -n gloo-mesh --kube-context $MGMT_CONTEXT
     

2. Uninstall the Gloo Mesh CRDs Helm release from the management cluster.

     helm uninstall gloo-platform-crds -n gloo-mesh --kube-context $MGMT_CONTEXT
     

3. Delete the gloo-mesh namespace, and if applicable, the gloo-mesh-config namespace.

     kubectl --context $MGMT_CONTEXT delete namespace gloo-mesh
   kubectl --context $MGMT_CONTEXT delete namespace gloo-mesh-config
     

Optional: Uninstall sample apps link

If you installed the Bookinfo and httpbin sample apps, run the following commands to uninstall their resources.

1. Export the Istio version that your cluster runs as an environment variable, such as 1.20.8-patch1 in the following example.

     export ISTIO_VERSION=1.20.8-patch1
     

2. Remove the Bookinfo application components and service accounts.

     kubectl -n bookinfo delete -f https://raw.githubusercontent.com/istio/istio/$ISTIO_VERSION/samples/bookinfo/platform/kube/bookinfo.yaml -l 'app,version notin (v3)' --context $REMOTE_CONTEXT1
   kubectl -n bookinfo delete -f https://raw.githubusercontent.com/istio/istio/$ISTIO_VERSION/samples/bookinfo/platform/kube/bookinfo.yaml -l 'account' --context $REMOTE_CONTEXT1
     

     kubectl --context $REMOTE_CONTEXT2 -n bookinfo delete -f https://raw.githubusercontent.com/istio/istio/$ISTIO_VERSION/samples/bookinfo/platform/kube/bookinfo.yaml -l 'service in (reviews)'
   kubectl --context $REMOTE_CONTEXT2 -n bookinfo delete -f https://raw.githubusercontent.com/istio/istio/$ISTIO_VERSION/samples/bookinfo/platform/kube/bookinfo.yaml -l 'app in (reviews),version in (v3)'
   kubectl --context $REMOTE_CONTEXT2 -n bookinfo delete -f https://raw.githubusercontent.com/istio/istio/$ISTIO_VERSION/samples/bookinfo/platform/kube/bookinfo.yaml -l 'app in (ratings)'
   kubectl --context $REMOTE_CONTEXT2 -n bookinfo delete -f https://raw.githubusercontent.com/istio/istio/$ISTIO_VERSION/samples/bookinfo/platform/kube/bookinfo.yaml -l 'account in (reviews, ratings)'
     

3. Delete the bookinfo namespace.

     kubectl delete ns bookinfo --context $REMOTE_CONTEXT1
   kubectl delete ns bookinfo --context $REMOTE_CONTEXT2
     

4. Remove the httpbin application components.

     kubectl -n httpbin delete -f https://raw.githubusercontent.com/solo-io/gloo-mesh-use-cases/main/policy-demo/httpbin.yaml --context $REMOTE_CONTEXT1
   kubectl -n httpbin delete -f https://raw.githubusercontent.com/solo-io/gloo-mesh-use-cases/main/policy-demo/httpbin.yaml --context $REMOTE_CONTEXT2
     

5. Delete the httpbin namespace.

     kubectl delete ns httpbin --context $REMOTE_CONTEXT1
   kubectl delete ns httpbin --context $REMOTE_CONTEXT2
     

6. Remove the helloworld application components.

     kubectl -n helloworld delete -l 'service=helloworld' -f https://raw.githubusercontent.com/solo-io/gloo-mesh-use-cases/main/policy-demo/helloworld.yaml --context $REMOTE_CONTEXT1
   kubectl -n helloworld delete -l 'app=helloworld,version in (v1, v2)' -f https://raw.githubusercontent.com/solo-io/gloo-mesh-use-cases/main/policy-demo/helloworld.yaml --context $REMOTE_CONTEXT1
   kubectl -n helloworld delete -l 'service=helloworld' -f https://raw.githubusercontent.com/solo-io/gloo-mesh-use-cases/main/policy-demo/helloworld.yaml --context $REMOTE_CONTEXT2
   kubectl -n helloworld delete -l 'app=helloworld,version in (v3, v4)' -f https://raw.githubusercontent.com/solo-io/gloo-mesh-use-cases/main/policy-demo/helloworld.yaml --context $REMOTE_CONTEXT2
     

7. Delete the helloworld namespace.

     kubectl delete ns helloworld --context $REMOTE_CONTEXT1
   kubectl delete ns helloworld --context $REMOTE_CONTEXT2