AWS DevOps Engineer Professional
942 incident response problems that help with AWS DevOps Engineer Professional prep.
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All problems (942)
CICD-1578A Vault transit key rotates and one signing job still emits the old key versionOne signing job keeps using an old transit key version after rotation.CI/CDAdvanced11 minProCICD-1507An Argo CD repo-server trust update lands and one Git mirror still failsOnly one Argo CD repo-server pod rejects a rotated Git mirror key after a trust bundle update.CI/CDAdvanced11 minProCICD-1524An image mirror serves pulls and signature verification still failsVerification fails only when images are pulled through one registry mirror tier.CI/CDAdvanced11 minProCICD-1544An OCI mirror serves the new image and signature verification still failsSignature verification fails only through one mirror tier after edge caching is enabled.CI/CDAdvanced11 minProCICD-1494A BuildKit cache import looks healthy and one branch still cold-buildsA branch-based build farm loses cache hits only behind one internal registry proxy after HTTP optimization changes.CI/CDAdvanced12 minProCICD-1502A BuildKit cache import works on one runner group and misses on anotherOnly one runner group cold-builds after a proxy redirect optimization in front of the registry.CI/CDAdvanced12 minProCICD-1555A canary analysis completes and rollback still misfiresA rollback triggers only in one region after telemetry bucket changes during canary analysis.CI/CDAdvanced12 minProCICD-1496A Flux image automation commit lands and promotion still stallsGitOps promotion appears correct in Git, but one region deploys the old image after a mirrored registry rollout.CI/CDAdvanced12 minProCICD-1485A Flux image update commits the new tag and Argo still deploys the old digestGitOps promotion looks correct, yet one environment deploys the previous image after registry proxy caching changes.CI/CDAdvanced12 minProCICD-1491A GitHub Actions OIDC deploy works in one region and fails in anotherA multi-region deployment pipeline starts failing only in the disaster recovery account after environment names were cleaned up.CI/CDAdvanced12 minProCICD-1541A GitHub deployment job passes approvals and still failsDeployments fail only in one account after moving the production workflow into a new path.CI/CDAdvanced12 minProCICD-1521A GitHub environment approval passes and the deploy job still failsOnly production deploys fail after a workflow file move even though approvals complete normally.CI/CDAdvanced12 minProCICD-1531A GitHub OIDC deployment works in one account and fails in anotherDeployments fail only in one account after moving repositories under a new GitHub organization.CI/CDAdvanced12 minProCICD-1540A registry cleanup deletes a layer and one release job still fetches itA deleted OCI layer remains fetchable only through one edge cache after cleanup.CI/CDAdvanced12 minProCICD-1530A registry cleanup deletes an image layer and one release job still fetches itA deleted OCI layer remains fetchable only through one edge cache after cleanup.CI/CDAdvanced12 minProCICD-1560A registry retention rule deletes untagged blobs and one build still succeedsA stale build works only through one proxy after registry retention cleanup.CI/CDAdvanced12 minProCICD-1459A Vault login action succeeds and Terraform still uses stale AWS credentialsA Vault login action succeeds and Terraform still uses stale AWS credentials focuses on Identity And Access and asks the reader to isolate the key signal in AWS. Credential freshness bugs often come from wrapper ordering around expo...CI/CDAdvanced12 minProCICD-1520An OCI registry cleanup finishes and one release job still pulls a deleted layerA deleted OCI layer remains fetchable only through one proxy tier after cleanup.CI/CDAdvanced12 minProCICD-1408A CodeBuild local cache speeds most jobs and one privileged image build...A CodeBuild local cache speeds most jobs and one privileged image build... focuses on Artifact Promotion and asks the reader to isolate the key signal in AWS. Local cache reuse can inherit ownership assumptions from the most privil...CI/CDAdvanced13 minProCICD-1467An Argo Rollouts analysis stays yellowCanary promotions stall right after a metrics label cleanup even though dashboards still show healthy rollout traffic.CI/CDAdvanced13 minPro