Horizontal Pod Autoscaling

Summary

Automatically increasing or decreasing the number of running Pod replicas based on observed metrics like CPU or memory usage — a core mechanism for handling variable traffic without manual intervention.

• 1Set up a Horizontal Pod Autoscaler on a Deployment targeting CPU utilization.
• 2Simulate load and observe the autoscaler adding replicas in response.
• 3Learn why autoscaling requires resource requests/limits to be set correctly to work well.