A rolling update stalls halfway: new replicas crash-loop and old ones are already scaled down. What are your first moves?

The reflex is rollback and it is usually right. There is exactly one class of failure where undo makes things worse, and knowing it is the entire interview.

Updated Sep 2026 · Grounded in researched DevOps, SRE and platform engineering interview loops, written to a senior-engineer editorial bar, and never padded to hit a word count.

The reflex is rollback and it is usually right. There is exactly one class of failure where undo makes things worse, and knowing it is the entire interview.

20 answers per topic instead of 10, and your progress kept · no cardor unlock all 390 remaining answers · ₹2,000 / $25

UP NEXT ON YOUR JOURNEY

Next in this trackAll stages green except the production deploy, which failed three runs in a row. Nobody changed anything. Where do you dig first?Next in this trackA service on a VM dies and restarts every few minutes, and the team has shrugged for weeks. Find the actual cause.Next in this trackApps emit more log lines than the logging pipeline stores, and nothing alerts. Where do the missing events go?

DISCUSSION · 0

Nothing here yet. Say how you would answer it.