The filters show the list of Kubernetes clusters and namespaces active during the time window selected. If a Kubernetes cluster is selected, the list of namespaces is updated for that cluster, and vice versa.
If you have deployed Lacework agents into your Kubernetes environment and cannot view clusters or node types in the Lacework Console, the issue may be due to lack of access to machine tags or the cluster may not be active during the time window selected.
To resolve this issue, provide access to your workload machine tags by following the steps in the following article: Adding the Name field to the Machine Properties Table