The beginner-friendly guide to debugging CrashLoopBackOff without randomly deleting everything.

You deploy your application to Kubernetes.

kubectl apply -f deployment.yaml

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Everything looks good.

You check your Pods:

kubectl get pods

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And then you see this:

NAME READY STATUS RESTARTS my-app-7d8f9c6b5d-abc12 0/1 CrashLoopBackOff 7

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Your first thought?

"Let me delete the Pod."

kubectl delete pod my-app-7d8f9c6b5d-abc12

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Kubernetes creates another Pod.

The new Pod crashes, too.

Congratulations! You have successfully restarted your problem. 😂

Here's the truth: Kubernetes is not necessarily broken. Your application or its configuration might be.

Let's learn how to troubleshoot this like a real DevOps engineer.

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