404 and Rewrite Mismatch
84 incident problems that show up as “404 and Rewrite Mismatch”.
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추천 문제
All problems (84)
K8S-192A route binds to the right listener while a cross-namespace backend reference is still unauthorized during a failover rehearsalThe object graph looks connected and the security boundary still prevents end-to-end flow. Normal traffic masked the issue until the standby or alternate path became active under rehearsal conditions.KubernetesAdvanced19 minProSECURITY-008Secrets scanner flags a rotated key that is already revokedThe alert is technically correct for the repository history, but the key is no longer active and the response path is unclear.SecurityIntermediate19 minProSECURITY-011Reverse proxy strips security header needed for SSO callbackThe identity provider finishes correctly, but the application rejects the callback because a forwarded security header never arrives.SecurityIntermediate22 minProSECURITY-012Token validation passes in app tier but fails in background queueToken validation passes in app tier but fails in background queue is a hands-on troubleshooting drill. A queue consumer uses a different issuer or clock setting and rejects tokens that looked valid at the edge. Identity and Access Management needs to be checked by narrowing sc...SecurityAdvanced26 minProLINUX-119An fstab automount hides the real mount failure until the first customer request hits the pathBoot looks clean, yet the outage begins later because the failing dependency is deferred behind on-demand mounting.LinuxIntermediate15 minProCICD-276Preview environment teardown removes DNS before certificate validation jobs finish probing the old hostname during a failover rehearsalThe environment lifecycle cleanup is correct for cost control and too early for the remaining verification path. Normal traffic masked the issue until the standby or alternate path became active under rehearsal conditions.CI/CDIntermediate17 minProK8S-111Gateway API reports the HTTPRoute as accepted but the listener hostname mismatch prevents any real attachmentStatus conditions look promising, yet traffic never arrives because the route was accepted by the controller but not bound to the intended hostname listener.KubernetesAdvanced18 minProSECURITY-026Security scanner flags admin port exposure only on standby nodeThe active node looks protected, but a standby or failover host still exposes the management service to a wider segment.SecurityIntermediate20 minProNETWORK-022Internal DNS resolves the old targetMost clients pick up the new destination, but a subset stays on the stale IP because resolver behavior is inconsistent.NetworkIntermediate21 minProSECURITY-029OAuth callback accepted on web tier but rejected after load balancer hopOAuth callback accepted on web tier but rejected is a hands-on troubleshooting drill. The callback parameters are correct, yet one load balancer rewrite alters the host or scheme expected by validation. Identity and Access Management needs to be checked by narrowing scope, rec...SecurityIntermediate22 minProNETWORK-028TLS handshake fails only through one CDN POPTLS handshake fails only (Certificate Trust Failure) is a hands-on troubleshooting drill. Most regions succeed, but a single edge location negotiates an older TLS path and breaks the request. Azure Firewall and Proxy Paths needs to be checked by narrowing scope, recent change,...NetworkIntermediate22 minProNETWORK-005Only certain gRPC requests intermittently fail due to an MTU mismatchTracks MTU and segment size in a situation where small requests work but only large requests break in the middle.NetworkAdvanced27 minProCICD-399A broken-glass deploy skips manual approval while cleanup automation still assumes the abandoned candidate release owns the shared sandbox during a staged decommissionThe emergency path works, but cleanup logic later tears down the wrong environment state. The service still works through the primary path, but one dependency only fails when the old component is finally drained away.CI/CDIntermediate16 minProK8S-363A gateway API route is admitted while one backend reference still points to a namespace alias only the old ingress controller understood during a staged decommissionThe route object looks valid and one controller-specific assumption no longer applies. The service still works through the primary path, but one dependency only fails when the old component is finally drained away.KubernetesIntermediate16 minProK8S-124An ingress rewrite rule strips the trailing slash from the websocket path and only interactive sessions fail while health checks stay greenThe service looks healthy through normal probes, yet upgraded connections hit a subtly different path contract.KubernetesIntermediate16 minProCICD-336A deployment lock is cleared manually, but downstream cleanup logic still assumes the old lock owner is active and deletes the wrong environment during a failover rehearsalThe lock seems gone, yet ownership metadata from the previous run still drives destructive automation. Normal traffic masked the issue until the standby or alternate path became active under rehearsal conditions.CI/CDIntermediate17 minProCICD-515A broken-glass deploy skips manual approvalA broken-glass deploy skips manual approval focuses on ci-cd-release-safety and asks the reader to isolate 404 and Rewrite Mismatch. 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/CDIntermediate18 minProCICD-517A broken-glass deploy skips manual approvalA broken-glass deploy skips manual approval focuses on ci-cd-release-safety and asks the reader to isolate 404 and Rewrite Mismatch. 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/CDIntermediate18 minProCICD-519A broken-glass deploy skips manual approvalA broken-glass deploy skips manual approval focuses on ci-cd-release-safety and asks the reader to isolate 404 and Rewrite Mismatch. 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/CDIntermediate18 minProK8S-479A gateway API route is admitted (404 and Rewrite Mismatch)A gateway API route is admitted (404 and Rewrite Mismatch) focuses on cluster-networking-and-service-discovery and asks the reader to isolate 404 and Rewrite Mismatch in NGINX. 실무에서는 404-and-rewrite-mismatch 증상만 보고 Pod 하나에 매달리지 말고 이벤트, 이전 로그, Service/Endpoint, 최근 배포 변경을 한 번에 묶...KubernetesIntermediate18 minPro