AWS DevOps Engineer Professional
942 incident response problems that help with AWS DevOps Engineer Professional prep.
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All problems (942)
CICD-1445A Jenkins changelog job returns an empty rangeA Jenkins changelog job returns an empty range focuses on Artifact Promotion and asks the reader to isolate the key signal in jenkins. Controller image updates can break parsers that quietly depended on English date strings.CI/CDIntermediate10 minProCICD-1455A Jenkins durable task never times out correctlyTimeout behavior changes only after a base image refresh that changed locale defaults on the controller.CI/CDIntermediate10 minProCICD-1475A Jenkins library update lands and one controller keeps loading the old Groovy codeOnly one Jenkins controller keeps executing old library logic after a shared library update.CI/CDIntermediate10 minProCICD-1435A Jenkins release pipeline computes an empty changelogA Jenkins release pipeline computes an empty changelog focuses on Artifact Promotion and asks the reader to isolate the key signal in jenkins. Controller image updates can break parsers that quietly depended on English date output.CI/CDIntermediate10 minProCICD-1425A Jenkins release pipeline publishes the wrong changelogA Jenkins release pipeline publishes the wrong changelog focuses on Artifact Promotion and asks the reader to isolate the key signal in jenkins. CI regressions can come from controller locale changes where parsers expect English...CI/CDIntermediate10 minProCICD-1415A Jenkins shared library rollout breaks only nightly jobsA Jenkins shared library rollout breaks only nightly jobs focuses on Runner Hygiene and asks the reader to isolate the key signal in jenkins. Jenkins shared library bugs often differ by job hierarchy because caches live at more than one scope.CI/CDIntermediate10 minProCICD-1497A Jenkins shared library update merges and one controller keeps using the old GroovyOne Jenkins controller shows old library behavior after a successful shared library merge and controller restart.CI/CDIntermediate10 minProCICD-1397A merge queue job posts success and the protected branch still blocksA merge queue job posts success and the protected branch still blocks focuses on Deployment Governance and asks the reader to isolate the key signal in GitHub. Protected-branch failures can hinge on exact check names, not only on job success or fail...CI/CDIntermediate10 minProCICD-1417A merge queue promotion succeeds and the release note generator misses one PRA merge queue promotion succeeds and the release note generator misses one PR focuses on Artifact Promotion and asks the reader to isolate the key signal in GitHub. Release note drift can come from commit formatting changes upstream...CI/CDIntermediate10 minProCICD-1480A release automation bot closes the incident and users still fetch the old binaryMost users receive the new release immediately while one architecture continues downloading the previous binary.CI/CDIntermediate10 minProCICD-1470A release bot marks the artifact fresh while users still download the previous buildA release looks complete in chatops while a subset of downloads still resolves to the old object.CI/CDIntermediate10 minProCICD-1453A rootless BuildKit build uses the secret mount locally and fails in CIA build that works on developer machines fails only on hardened CI runners after rootless mode was enforced.CI/CDIntermediate10 minProCICD-1468A rootless Docker login succeeds but Helm cannot pull the OCI chartOCI chart pulls fail only on hardened rootless runners after registry login reports success.CI/CDIntermediate10 minProCICD-1503A Terraform apply finishes and the lock staysA backend lock remains after successful retry-based applies in one workspace group.CI/CDIntermediate10 minProCICD-1466An Atlantis rerun posts no fresh planAtlantis reruns succeed yet no new plan comment appears after engineers press the recheck button.CI/CDIntermediate10 minProCICD-1486An Atlantis rerun posts no new planOperators manually rerun Atlantis after a flaky failure but never receive a fresh plan comment.CI/CDIntermediate10 minProCICD-1443A BuildKit registry cache export passes locally and fails in CIA BuildKit registry cache export passes locally and fails in CI focuses on Artifact Promotion and asks the reader to isolate the key signal in docker. Registry edges can preserve normal pushes while quietly breaking the metadata path used fo...CI/CDIntermediate11 minProCICD-1411A GitHub Actions cache hit rate collapses (cache-key-helper-read-stale-preinstalled-node-version)A GitHub Actions cache hit rate collapses (cache-key-helper-read-stale... focuses on Artifact Promotion and asks the reader to isolate the key signal in GitHub. Cache misses after image refreshes often come from helper assumptions about p...CI/CDIntermediate11 minProCICD-1451A GitHub Actions deploy silently cancels the live rolloutDeployments from release branches vanish after merge queue was enabled with a templated concurrency key.CI/CDIntermediate11 minProCICD-1477A GitHub merge queue passes checks and still deploys stale codeA merge queue rollout deploys stale code only when the target branch moves during queue processing.CI/CDIntermediate11 minPro