AWS DevOps Engineer Professional
942 incident response problems that help with AWS DevOps Engineer Professional prep.
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All problems (942)
CICD-1418A CodeBuild privileged step pushes a multi-arch image and the next pipeline...A CodeBuild privileged step pushes a multi-arch image and the next pipeline... focuses on Artifact Promotion and asks the reader to isolate the key signal in AWS. A successful push does not guarantee every referenced architectur...CI/CDAdvanced14 minProCICD-1396A release provenance check fails only on one registryA release provenance check fails only on one registry focuses on Artifact Promotion and asks the reader to isolate the key signal in GitHub. Integrity failures can come from serialization assumptions rather than from tampering or ke...CI/CDAdvanced14 minProCICD-1412A Terraform apply succeeds in staging and fails in productionA Terraform apply succeeds in staging and fails in production focuses on execution-context and asks the reader to isolate the key signal in AWS. Distributed backend changes can create stale lock perceptions even when Terraform itself releases t...CI/CDAdvanced14 minProCICD-1350A blue-green deploy to ECS looks clean and the old task set keeps serving a subset of trafficA platform team automates blue-green promotion and later sees mixed user behavior even though the deployment controller reports success.CI/CDAdvanced15 minProCICD-1398A blue-green deployment on ECS keeps a percentage of traffic on the old task...A blue-green deployment on ECS keeps a percentage of traffic on the old... focuses on Deployment Governance and asks the reader to isolate the key signal in AWS. Traffic shifting can be cached at layers your deployment controller does...CI/CDAdvanced15 minProCICD-1378A blue-green ECS rollout passes health gates and some users still see the old versionA blue-green deployment looks successful in metrics and later a subset of sessions keep behaving like they never left the old version.CI/CDAdvanced15 minProCICD-1368A blue-green rollout to ECS promotes traffic and one customer cohort still...A blue-green rollout to ECS promotes traffic and one customer cohort still... focuses on Deployment Governance and asks the reader to isolate the key signal in AWS. Traffic shifting success does not guarantee user stickiness aligned with th...CI/CDAdvanced15 minProCICD-1356A BuildKit cache import appears healthy and later every merge build goes coldA BuildKit cache import appears healthy and later every merge build goes cold focuses on Artifact Promotion and asks the reader to isolate the key signal in docker. A present cache tag does not guarantee it still points to a cache artifact.CI/CDAdvanced15 minProCICD-1366A Buildx multiarch release publishes a manifest list and one architecture...A Buildx multiarch release publishes a manifest list and one architecture... focuses on Artifact Promotion and asks the reader to isolate the key signal in docker. Temporary-looking tags can still be part of the publish chain for...CI/CDAdvanced15 minProCICD-1376A Buildx multiarch release shows green and one architecture tag is absentA Buildx multiarch release shows green and one architecture tag is absent focuses on Artifact Promotion and asks the reader to isolate the key signal in docker. Temporary refs can still be live dependencies in the publish chain of...CI/CDAdvanced15 minProCICD-1340A canary deploy looks healthy in metrics and still fails usersA canary deploy looks healthy in metrics and still fails users focuses on Deployment Governance and asks the reader to isolate the key signal in NGINX. Healthy internal checks do not prove the external traffic shaping layer is aligned w...CI/CDAdvanced15 minProCICD-1388A canary release promotes itself automatically and still rolls backA canary release promotes itself automatically and still rolls back focuses on Deployment Governance and asks the reader to isolate the key signal in AWS. Progressive delivery decisions are only as good as the baseline context that ge...CI/CDAdvanced15 minProCICD-1334A Compose deployment deletes generated migration assetsA local compose workflow looks fine until one container starts missing generated migration or asset files after a directory is mounted for live editing.CI/CDAdvanced15 minProCICD-1320A deploy stage reuses the wrong Helm valuesA self-hosted runner deploys reliably until cross-environment contamination appears after a compose-based local prep step was added.CI/CDAdvanced15 minProCICD-1330A deployment health gate reports success and the service still rolls backA blue-green deployment setup passes all automated checks and still causes a rollback once user traffic hits the newly promoted target.CI/CDAdvanced15 minProCICD-1264A deployment job waits forever on environment approvalCI/CD incident scenario used for structured troubleshooting practice.CI/CDAdvanced15 minProCICD-1344A Docker registry behind NGINX accepts pushes and later large uploads hangA reverse proxy config is reorganized for clarity and later only larger image pushes start hanging or failing halfway through upload.CI/CDAdvanced15 minProCICD-1324A GitHub Actions concurrency group cancels the wrong deploymentA deployment workflow is guarded by concurrency and later an on-demand run unexpectedly cancels a production rollout from another environment.CI/CDAdvanced15 minProCICD-1374A private registry behind NGINX logs in correctly and larger pushes hangA private registry behind NGINX logs in correctly and larger pushes hang focuses on Artifact Promotion and asks the reader to isolate the key signal in NGINX. Shared security includes can quietly undo streaming behavior required by...CI/CDAdvanced15 minProCICD-1354A registry behind NGINX accepts auth and fails large pushesA registry behind NGINX accepts auth and fails large pushes focuses on Artifact Promotion and asks the reader to isolate the key signal in NGINX. Security includes can accidentally revert performance-critical streaming directives on special...CI/CDAdvanced15 minPro