To ensure that a cluster is attachable or detachable, it is necessary to have at least the following cluster sizing configuration.

Table 1. Minimal Cluster Sizing
Parameter Detail
Control Plane
Number of Nodes 1
Sizing Policy TKG Small
Worker Pool
Number of Nodes 2
Sizing Policy TKG Small

For more information, see VMware Tanzu Mission Control Documentation for Configuration Requirements for Registering Tanzu Kubernetes Clusters.

The above sizing policy definitions are created by VMware Cloud Director Container Service Extension. To learn more about these sizing policies, see Add Tanzu Kubernetes Grid VM Sizing Policies to Organization Virtual Data Centers.