37 articles tagged with Debugging.
A green readiness probe means the probe endpoint answered, nothing more. The gaps that cause 502s during rollouts, and the Deployment settings that close them.
Rejected pushes, local changes that would be overwritten, merge conflicts, detached HEAD, unrelated histories, publickey denials, and oversized files. What each message means and the safe fix.
Most Docker time is spent fighting the same handful of errors. This is the map: what each one means, the command that reveals the cause, and the fix.
CrashLoopBackOff, ImagePullBackOff, OOMKilled, Pending, NodeNotReady, CreateContainerConfigError, and failing probes, each with what it means, the command that diagnoses it, and the usual fix.
Git dropped you into "detached HEAD" and the commits you just made seem to have vanished. Here's what happened and how to get your work back.
A pod that logged fine for weeks starts throwing EMFILE at 3am. Here's how to tell a real file-descriptor leak from a limit that's just set too low.
A node flips to NotReady and pods start disappearing. Here's the order we check things in, the usual culprits, and how to recover without making it worse.
The ordered kubectl toolkit we reach for when a pod misbehaves, with the five commands we run first and what each one actually tells you.
A pod can't reach a service by name, the app throws connection errors, and everyone blames the network. Usually it's DNS, and usually it's fixable.
A PVC stuck in Pending means nothing on the cluster can hand it a volume. Here's how we read the events and get it bound fast.
When RAG answers go sideways, the model usually isn't the problem. Here's the top-to-bottom checklist we run to find where retrieval actually breaks.
The Compose failures that eat an afternoon are almost always the same six. Here's how to spot each one fast and the fix that actually sticks.
