15 real production scenarios with step-by-step diagnosis commands and proven fixes.
15 scenarios found
Pod keeps crashing and restarting with exponential backoff delay between restarts.
Pod cannot be scheduled to any node and remains in Pending state indefinitely.
Kubernetes cannot pull the container image from the registry.
Application pods are running but the Service is not routing traffic to them.
A Kubernetes node has stopped communicating with the control plane.
Server disk is at 100% capacity causing application failures and service degradation.
Server CPU is pegged at 100%, causing slow response times or complete unresponsiveness.
Container exits immediately after starting and Docker restart policy keeps restarting it.
Workflow shows as failed but no clear error message in the logs.
Terraform apply hangs indefinitely without progress or error output.
HTTPS connections failing because the TLS certificate has expired.
Services cannot resolve hostnames, causing connection failures across applications.
Container is killed by the kernel OOM killer because it exceeded its memory limit.
Deployment is not progressing — new pods are not replacing old ones.
Pipeline steps fail with permission or access denied errors when deploying or accessing resources.