Distribute your workload evenly using a multi-zonal node pool.

Distribute your workload evenly using multiple zonal node pools.

Use cluster autoscaler to resize the number of nodes in the node pool, and use a Horizontal Pod Autoscaler to scale the workload.

Create a managed instance group for Compute Engine with the cluster nodes. Configure autoscaling rules for the managed instance group.

Create alerting policies in Cloud Monitoring based on GKE CPU and memory utilization. Ask an on-duty engineer to scale the workload by executing a script when CPU and memory usage exceed predefined thresholds.