Top 5 Kubernetes Errors and How to Fix Them Like a Pro

https://medium.com/@devopsdiariesinfo/top-5-kubernetes-error...

From pods stuck in CrashLoopBackOff to services mysteriously failing, Kubernetes can throw curveballs when you least expect it. In this article have discussed 5 prime errors of K8s and also shared caouses of the errors and troubleshooting steps.

Resource Exhausted Error: Occurs when pods exceed allocated CPU or memory resources.

CrashLoopBackOff: Pods crash repeatedly due to application errors or misconfigurations.

ImagePullBackOff: Kubernetes fails to pull container images, often due to incorrect image names or authentication issues.

Pending Pods: Pods remain unscheduled because of insufficient resources or node selector constraints

Service Not Found: Services are unreachable due to misconfigurations or missing endpoints.

Here is detailed description with troubleshooting tips:

Resource Exhausted Error: Occurs when pods exceed allocated CPU or memory resources.
CrashLoopBackOff: Pods crash repeatedly due to application errors or misconfigurations.
ImagePullBackOff: Kubernetes fails to pull container images, often due to incorrect image names or authentication issues.
Pending Pods: Pods remain unscheduled because of insufficient resources or node selector constraints.
Service Not Found: Services are unreachable due to misconfigurations or missing endpoints.

Troubleshooting Tips:

Use kubectl describe pod <pod-name> to inspect pod events and identify issues.
Check container logs with kubectl logs <pod-name> for error messages.
Monitor resource usage using kubectl top pod and kubectl top node.
Verify service configurations and endpoints with kubectl get svc and kubectl get endpoints.
Adjust resource requests and limits in deployment specifications to prevent resource exhaustion.

By systematically addressing these common errors, you can enhance the stability and reliability of your Kubernetes deployments.