Pods Stuck in Pending?! The Kubernetes Outage No One Could Debug (EP4 Simulation)

🔥 EP4 of the Kubernetes Simulation Series — Real Production Outage Recreated

This episode recreates a real incident from a production Kubernetes cluster, where Pods suddenly became stuck in Pending, developers blamed YAML, and SREs had no logs, no crashes, and absolutely no idea why nothing would schedule.

In this simulation, you will learn:

Why Pods enter Pending

How resource requests secretly break deployments

How Kubernetes scheduler decides where Pods run

What “Insufficient CPU / Insufficient Memory” actually means

How autoscaling fails during quota limits

How to fix impossible resource requests

How real DevOps teams handle launch-day outages

Inside this episode, I intentionally deploy a Pod requesting 20 CPU / 20Gi RAM on a node that physically cannot provide it — exactly like the real outage we experienced during a product launch.

This is one of the most important Kubernetes debugging skills every DevOps Engineer, SRE, and Cloud Engineer must know.

If you want more realistic Kubernetes simulations, comment “EP5” below.

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