Kubernetes clusters have limits on the number of pods (containers) it can run.  The default pod limit on Redgate Clone is 110. This number can be changed. 

Each Redgate Clone data container creates a pod. If your node reaches the max pod limit, you can delete data containers.

Look for failed data containers to delete.

After evaluating the amount of resources you have on your nodes and there's plenty of resources left. The limit can be incremented.