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Uninstall Pluggable Components from KubeSphere v3.1.x

After you enable the pluggable components of KubeSphere, you can also uninstall them by performing the following steps. Please back up any necessary data before you uninstall these components.

Note

The methods of uninstalling certain pluggable components on KubeSphere v3.1.x are different from the methods on KubeSphere v3.0.0. For more information about the uninstallation methods on KubeSphere v3.0.0, see Uninstall Pluggable Components from KubeSphere.

Prerequisites

You have to change the value of the field enabled from true to false in ks-installer of the CRD ClusterConfiguration before you uninstall any pluggable components except Service Topology and Pod IP Pools.

Use either of the following methods to change the value of the field enabled:

Run the following command to edit ks-installer:

kubectl -n kubesphere-system edit clusterconfiguration ks-installer

Log in to the KubeSphere web console as admin, click Platform in the upper-left corner and select Cluster Management, and then go to CRDs to search for ClusterConfiguration. For more information, see Enable Pluggable Components.

Note

After the value is changed, you need to wait until the updating process is complete before you continue with any further operations.

Uninstall KubeSphere App Store

Change the value of openpitrix.store.enabled from true to false in ks-installer of the CRD ClusterConfiguration.

Uninstall KubeSphere DevOps

Change the value of devops.enabled from true to false in ks-installer of the CRD ClusterConfiguration.
Run the command mentioned in Prerequisites and then delete the code under status.devops in ks-installer of the CRD ClusterConfiguration.

Run the following commands:

helm -n kubesphere-devops-system delete ks-jenkins
helm -n kubesphere-devops-system delete uc

# Delete DevOps projects
for devopsproject in `kubectl get devopsprojects -o jsonpath="{.items[*].metadata.name}"`
do
  kubectl patch devopsprojects $devopsproject -p '{"metadata":{"finalizers":null}}' --type=merge
done
   
for pip in `kubectl get pipeline -A -o jsonpath="{.items[*].metadata.name}"`
do
  kubectl patch pipeline $pip -n `kubectl get pipeline -A | grep $pip | awk '{print $1}'` -p '{"metadata":{"finalizers":null}}' --type=merge
done
   
for s2ibinaries in `kubectl get s2ibinaries -A -o jsonpath="{.items[*].metadata.name}"`
do
  kubectl patch s2ibinaries $s2ibinaries -n `kubectl get s2ibinaries -A | grep $s2ibinaries | awk '{print $1}'` -p '{"metadata":{"finalizers":null}}' --type=merge
done
   
for s2ibuilders in `kubectl get s2ibuilders -A -o jsonpath="{.items[*].metadata.name}"`
do
  kubectl patch s2ibuilders $s2ibuilders -n `kubectl get s2ibuilders -A | grep $s2ibuilders | awk '{print $1}'` -p '{"metadata":{"finalizers":null}}' --type=merge
done
   
for s2ibuildertemplates in `kubectl get s2ibuildertemplates -A -o jsonpath="{.items[*].metadata.name}"`
do
  kubectl patch s2ibuildertemplates $s2ibuildertemplates -n `kubectl get s2ibuildertemplates -A | grep $s2ibuildertemplates | awk '{print $1}'` -p '{"metadata":{"finalizers":null}}' --type=merge
done
   
for s2iruns in `kubectl get s2iruns -A -o jsonpath="{.items[*].metadata.name}"`
do
  kubectl patch s2iruns $s2iruns -n `kubectl get s2iruns -A | grep $s2iruns | awk '{print $1}'` -p '{"metadata":{"finalizers":null}}' --type=merge
done
   
kubectl delete devopsprojects --all 2>/dev/null

kubectl delete ns kubesphere-devops-system

Uninstall KubeSphere Logging

Change the value of logging.enabled from true to false in ks-installer of the CRD ClusterConfiguration.
To disable only log collection:
```
kubectl delete inputs.logging.kubesphere.io -n kubesphere-logging-system tail
```
Note

After running this command, you can still view the container recent logs provided by Kubernetes by default. However, the container history logs will be cleared and you cannot browse them any more.

To uninstall Logging system including Elasticsearch:

kubectl delete crd fluentbitconfigs.logging.kubesphere.io
kubectl delete crd fluentbits.logging.kubesphere.io
kubectl delete crd inputs.logging.kubesphere.io
kubectl delete crd outputs.logging.kubesphere.io
kubectl delete crd parsers.logging.kubesphere.io
kubectl delete deployments.apps -n kubesphere-logging-system fluentbit-operator
helm uninstall elasticsearch-logging --namespace kubesphere-logging-system

Warning

This operation may cause anomalies in Auditing, Events, and Service Mesh.

Run the following command:

kubectl delete deployment logsidecar-injector-deploy -n kubesphere-logging-system
kubectl delete ns kubesphere-logging-system

Uninstall KubeSphere Events

Change the value of events.enabled from true to false in ks-installer of the CRD ClusterConfiguration.

Run the following command:

helm delete ks-events -n kubesphere-logging-system

Uninstall KubeSphere Alerting

Change the value of alerting.enabled from true to false in ks-installer of the CRD ClusterConfiguration.
Run the following command:
```
kubectl -n kubesphere-monitoring-system delete thanosruler kubesphere
```
Note

Notification is installed in KubeSphere v3.1.x by default, so you do not need to uninstall it.

Uninstall KubeSphere Auditing

Change the value of auditing.enabled from true to false in ks-installer of the CRD ClusterConfiguration.

Run the following commands:

helm uninstall kube-auditing -n kubesphere-logging-system
kubectl delete crd rules.auditing.kubesphere.io
kubectl delete crd webhooks.auditing.kubesphere.io

Uninstall KubeSphere Service Mesh

Change the value of servicemesh.enabled from true to false in ks-installer of the CRD ClusterConfiguration.

Run the following commands:

curl -L https://istio.io/downloadIstio | sh -
istioctl x uninstall --purge
   
kubectl -n istio-system delete kiali kiali
helm -n istio-system delete kiali-operator
   
kubectl -n istio-system delete jaeger jaeger
helm -n istio-system delete jaeger-operator

Uninstall Network Policies

For the component NetworkPolicy, disabling it does not require uninstalling the component as its controller is now inside ks-controller-manager. If you want to remove it from the KubeSphere console, change the value of network.networkpolicy.enabled from true to false in ks-installer of the CRD ClusterConfiguration.

Uninstall Metrics Server

Change the value of metrics_server.enabled from true to false in ks-installer of the CRD ClusterConfiguration.

Run the following commands:

kubectl delete apiservice v1beta1.metrics.k8s.io
kubectl -n kube-system delete service metrics-server
kubectl -n kube-system delete deployment metrics-server

Uninstall Service Topology

Change the value of network.topology.type from weave-scope to none in ks-installer of the CRD ClusterConfiguration.
Run the following command:
```
kubectl delete ns weave
```

Uninstall Pod IP Pools

Change the value of network.ippool.type from calico to none in ks-installer of the CRD ClusterConfiguration.

Uninstall KubeEdge

Change the value of kubeedge.enabled from true to false in ks-installer of the CRD ClusterConfiguration.
Run the following commands:
```
helm uninstall kubeedge -n kubeedge
kubectl delete ns kubeedge
```
Note

After the uninstallation, you will not be able to add edge nodes to your cluster.

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