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Every capability on the LARK runs as a containerized application within the Kubernetes cluster. A core set is installed by default, and administrators may deploy additional applications from the appliance’s pre-loaded Helm chart repositories or remove applications that are no longer required. Application lifecycle management is performed through Rancher, using Helm charts.
New applications are installed from Helm chart repositories already loaded on the appliance, so the underlying system remains standard while the application set is tailored to requirements. The appliance does not need to be rebuilt to add capabilities.

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Viewing installed applications

Installed applications are viewed by opening Rancher, selecting the cluster, and navigating to Apps then Installed Apps. This view is also used to confirm the result of an install or removal.

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Installing an application

1

Access the Rancher dashboard

From a connected laptop, open a web browser and navigate to https://rancher.apps.lark. Sign in using Keycloak SSO credentials.
2

Select the cluster

From the Rancher dashboard, select the appliance’s cluster.
3

Open Apps & Marketplace

In the cluster view, select Apps & Marketplace. This section provides access to the available Helm chart repositories and to the deployed applications.
4

Select the Helm chart

Browse or search for the required application. Confirm the chart source and version align with the approved, pre-loaded repositories on the appliance.
5

Configure the deployment

Click Install on the selected chart, then configure the required parameters, including:
  • Namespace (create a new namespace or select an existing one)
  • Resource allocations (CPU, memory)
  • Storage configuration (persistent volumes, if required)
  • Service exposure settings (ClusterIP, NodePort, etc.)
6

Review and deploy

Review all configuration values, then click Install to deploy the application.
7

Verify the deployment

Monitor deployment status under Installed Apps. Confirm that all pods reach a Running state. If issues are observed, review the pod logs and health indicators.

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Removing an application

Removing an application deletes its Helm release and all associated Kubernetes resources (pods, services, and related objects).
Caution must be exercised when removing applications. Removing a shared or core platform component can affect the operation of the appliance. The application name and namespace must be verified before deletion to avoid removing a component the appliance depends on.
1

Access the Rancher dashboard

Open Rancher at https://rancher.apps.lark and sign in with Keycloak SSO credentials.
2

Open Installed Apps

Select the cluster, open Apps & Marketplace, and navigate to Installed Apps.
3

Identify the application

Locate the application to be removed, and verify its name and namespace.
4

Delete the application

Select the application, click Delete or Uninstall, and confirm when prompted.
5

Verify removal

Confirm the application no longer appears under Installed Apps. Navigate to Workloads to confirm all associated pods have terminated, and verify that related services and resources have been removed.