AWS DevOps Engineer Professional
942 incident response problems that help with AWS DevOps Engineer Professional prep.
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All problems (942)
CICD-1228Self-hosted runner reaches the artifact store but uploads still failA self-hosted runner can download code and dependencies but starts failing only on artifact upload calls.CI/CDAdvanced18 minProCICD-127The release pipeline signs the SBOM for the original image digest, but a last-minute rebuild produces a new digest that goes out unsignedEvery compliance report points at a valid attestation, just not for the image that actually ships.CI/CDAdvanced18 minProCICD-1225Token-based checkout works but post-job cleanup failsA pipeline migrates from SSH keys to token auth and later starts failing after the main work is already done.CI/CDAdvanced18 minProCICD-228A deploy pipeline signs the container image but not the values bundle that actually changes runtime behavior during a failover rehearsalSupply-chain checks pass for the binary artifact while the configuration artifact remains unsigned and mutable. Normal traffic masked the issue until the standby or alternate path became active under rehearsal conditions.CI/CDAdvanced19 minProCICD-1251A hotfix workflow builds the right image but the production deploy still reuses the previous digestA hotfix release is approved and deployed quickly, but post-deploy checks reveal the cluster still runs the previous image build.CI/CDAdvanced19 minProCICD-1236A release promotion succeeds but provenance attestation is missingA team adopts provenance generation and later finds production artifacts cannot be tied back to a verifiable attestation in the release pipeline.CI/CDAdvanced19 minProCICD-476A reusable workflow signs container images correctlyA reusable workflow signs container images correctly focuses on ci-cd-release-safety and asks the reader to isolate Permission Denied in GitHub. 실무에서는 ci-cd-release-safety 문제를 볼 때 실패 단계만 보지 말고 최근 변경, 이미지 태그, 시크릿 주입, 롤백 가능 여부를 먼저 함께 확인하는 편이 빠릅니다.CI/CDIntermediate19 minProCICD-478A reusable workflow signs container images correctlyA reusable workflow signs container images correctly focuses on ci-cd-release-safety and asks the reader to isolate Permission Denied in GitHub. 실무에서는 ci-cd-release-safety 문제를 볼 때 실패 단계만 보지 말고 최근 변경, 이미지 태그, 시크릿 주입, 롤백 가능 여부를 먼저 함께 확인하는 편이 빠릅니다.CI/CDIntermediate19 minProCICD-186A reviewed Terraform plan applies under a different provider context during a failover rehearsalThe diff appears safe, yet the runtime alias or account context points at different infrastructure during apply. Normal traffic masked the issue until the standby or alternate path became active under rehearsal conditions.CI/CDAdvanced19 minProCICD-1248A self-hosted runner signs the artifact manually but the automated job still failsA signing pipeline behaves normally during manual checks and fails under automation even though the same account appears to own the key material.CI/CDAdvanced19 minProCICD-288A staged rollback restores old manifests while the backing secret reference already rotated to a new key family during a failover rehearsalThe old release comes back up, but its runtime secret contract no longer exists in the same form. Normal traffic masked the issue until the standby or alternate path became active under rehearsal conditions.CI/CDAdvanced19 minProCICD-072GitHub Actions matrix deploy runs twice in productionThe workflow looks serialized, but two production deploys still overlap because the concurrency group ignores environment or region and only keys on the branch name.CI/CDAdvanced19 minProCICD-104Image promotion copies the manifest list but forgets the arm64 digest and only one node pool fails after releaseThe promoted tag looks valid in the registry, yet arm64 workers cannot pull because the multi-arch index lost a platform-specific child image during promotion.CI/CDAdvanced19 minProCICD-111Parallel Terraform plans race on the same remote state lock timeout and the second pipeline applies an outdated assumption setTwo changes target one workspace, one waits on the lock, and by the time it runs its plan is no longer trustworthy because the state already evolved.CI/CDAdvanced19 minProCICD-1226Reusable workflow runs after approval but still cannot read the environment secretAn approval gate exists and the environment secret is valid, but the called workflow cannot see it during deployment.CI/CDAdvanced19 minProCICD-1230A private action resolves in one repository but fails in anotherTwo repositories call the same private action, but only one starts failing after security policy changes at the org level.CI/CDAdvanced20 minProCICD-1218A reusable deployment workflow succeeds but later cleanup deletes the artifactA reusable workflow promotes a build, but compliance review later finds the evidence package already deleted.CI/CDAdvanced20 minProCICD-536A reusable workflow signs container images correctlyA reusable workflow signs container images correctly focuses on ci-cd-release-safety and asks the reader to isolate Permission Denied in GitHub. 실무에서는 ci-cd-release-safety 문제를 볼 때 실패 단계만 보지 말고 최근 변경, 이미지 태그, 시크릿 주입, 롤백 가능 여부를 먼저 함께 확인하는 편이 빠릅니다.CI/CDIntermediate20 minProCICD-1233A self-hosted runner can clone the repo but package restore failsA self-hosted runner reaches GitHub and artifact storage but repeatedly fails on package restore against one internal or external registry.CI/CDAdvanced20 minProCICD-088Argo CD health check stays degradedThe resource is actually working, but the GitOps controller still blocks promotion because its custom health logic only understands the older API shape.CI/CDAdvanced20 minPro