Certification942 problems· 22 reviewed

AWS DevOps Engineer Professional

942 incident response problems that help with AWS DevOps Engineer Professional prep.

All problems (942)

CICD-1471A GitHub release workflow signs artifacts and still fails attestationsA release pipeline succeeds through signing and fails only at provenance verification after matrix builds were parallelized.CI/CDIntermediate11 minPro CICD-1405A Jenkins multibranch pipeline builds branches and fails tag releasesA Jenkins multibranch pipeline builds branches and fails tag releases focuses on Artifact Promotion and asks the reader to isolate the key signal in jenkins. Tag builds can require SCM metadata that branch builds never exercise under lightweig...CI/CDIntermediate11 minPro CICD-1385A Jenkins pipeline works on branch builds and fails on pull requestsA Jenkinsfile is reused across branch and PR jobs and later only PR validation fails in a helper stage that depends on SCM metadata.CI/CDIntermediate11 minPro CICD-1395A Jenkins shared library step works on agents with Git installed and fails on...A Jenkins shared library step works on agents with Git installed and fails... focuses on Runner Hygiene and asks the reader to isolate the key signal in jenkins. Pipeline helpers can quietly depend on SCM metadata long afte...CI/CDIntermediate11 minPro CICD-1427A merge queue rollout blocks auto-merge (branch-protection-required-old-matrix-rendered-check-name)A merge queue rollout blocks auto-merge (branch-protection-required-old... focuses on Deployment Governance and asks the reader to isolate the key signal in GitHub. Matrix refactors can silently rename required checks even when the un...CI/CDIntermediate11 minPro CICD-1447A merge queue run stays blockedQueue entries stop auto-merging after a harmless-looking matrix rename.CI/CDIntermediate11 minPro CICD-1437A merge queue waits forever on a required checkQueue entries stop auto-merging after a small matrix refactor even though the green jobs are clearly visible.CI/CDIntermediate11 minPro CICD-1389A package cache proxy serves old dependencies after a purgeA dependency emergency requires cache purge and later only some runners continue downloading the old package build.CI/CDIntermediate11 minPro CICD-1399A package mirror warming job appears to succeed and runners still download...A package mirror warming job appears to succeed and runners still download... focuses on Artifact Promotion and asks the reader to isolate the key signal in docker. Warm-up jobs can miss architecture-specific or conditional URLs that only...CI/CDIntermediate11 minPro CICD-1458A remote cache importer works locally and misses in CIA remote cache importer works locally and misses in CI focuses on Artifact Promotion and asks the reader to isolate the key signal in docker. Cache misses can come from registry content negotiation drift rather than from missing objects.CI/CDIntermediate11 minPro CICD-1481A reusable workflow deploys fine in staging and fails in prodA shared release workflow starts failing only in production repos after environment approvals were tightened.CI/CDIntermediate11 minPro CICD-1433A rootless BuildKit cache export fails (registry-front-door-rewrote-inline-cache-media-type-response)A rootless BuildKit cache export fails (registry-front-door-rewrote-inline... focuses on Artifact Promotion and asks the reader to isolate the key signal in docker. Registry proxies can preserve ordinary push behavior and still qui...CI/CDIntermediate11 minPro CICD-1423A rootless BuildKit pipeline suddenly stops exporting inline cacheA rootless BuildKit pipeline suddenly stops exporting inline cache focuses on Artifact Promotion and asks the reader to isolate the key signal in docker. Registry proxies can preserve basic push behavior while still breaki...CI/CDIntermediate11 minPro CICD-1403A BuildKit digest pin is present and the build still uses the wrong baseA BuildKit digest pin is present and the build still uses the wrong base focuses on Artifact Promotion and asks the reader to isolate the key signal in docker. Platform-specific mirror logic can undermine the guarantees you think a...CI/CDIntermediate12 minPro CICD-1322A CI container reports unhealthy foreverA lean container image is deployed successfully and later flips unhealthy immediately despite serving traffic correctly.CI/CDIntermediate12 minPro CICD-1393A Docker build passes locally and fails in CIA Docker build passes locally and fails in CI focuses on Identity And Access and asks the reader to isolate the key signal in docker. Runner image updates can change BuildKit mount semantics even when the Dockerfile stays untouched.CI/CDIntermediate12 minPro CICD-1391A GitHub Actions cache restore hits on one branch and misses on release...A GitHub Actions cache restore hits on one branch and misses on release... focuses on Runner Hygiene and asks the reader to isolate the key signal in GitHub. Cache misses after repository metadata changes often come from key generation drift, not fr...CI/CDIntermediate12 minPro CICD-1431A GitHub Actions deploy works from the default branch and fails from a...A GitHub Actions deploy works from the default branch and fails from a... focuses on Deployment Governance and asks the reader to isolate the key signal in GitHub. Reusable workflow failures often come from environment sco...CI/CDIntermediate12 minPro CICD-1373A GitHub Actions release workflow uploads artifacts fine and the packaging...A GitHub Actions release workflow uploads artifacts fine and the packaging... focuses on Artifact Promotion and asks the reader to isolate the key signal in GitHub. Artifact lookup failures after workflow refactors are usually naming-contract...CI/CDIntermediate12 minPro CICD-1367A GitHub Actions reusable workflow works on push and fails on...A GitHub Actions reusable workflow works on push and fails on... focuses on Identity And Access and asks the reader to isolate the key signal in GitHub. Reusable workflow refactors often break secret flow at the boundary, not inside...CI/CDIntermediate12 minPro