404 and Rewrite Mismatch
84 incident problems that show up as “404 and Rewrite Mismatch”.
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All problems (84)
SECURITY-010Password policy update breaks automation account loginA stronger policy is applied broadly, but one unattended account still uses the old credential pattern and starts failing.SecurityBeginner13 minFreeK8S-098Gateway route hostname matches but TLS mode passthrough prevents the expected path rewriteThe route is attached, yet behavior differs because the chosen TLS handling mode bypasses the HTTP features the operator expected to apply.KubernetesIntermediate16 minFreeK8S-082Ingress path works externally but internal probes failUser traffic succeeds through one route, yet health probes and some internal paths fail because the controller still speaks the wrong protocol to the service.KubernetesIntermediate17 minFreeK8S-085Gateway API route is accepted but the ReferenceGrant does not cover the namespace of the backend serviceThe route object itself looks valid, yet traffic never forwards because the cross-namespace backend reference is not explicitly granted.KubernetesIntermediate18 minFreeK8S-055Gateway API route is Accepted but never serves trafficThe route object looks healthy in status output, but the parent listener does not actually match the requested hostname and path combination.KubernetesIntermediate22 minFreeSECURITY-019Nginx basic auth protects one path but leaves upload endpoint openNginx basic auth protects one path but leaves upload endpoint open is a hands-on troubleshooting drill. The visible admin page is protected, but an adjacent upload route bypasses the same security control. NGINX Identity and Access Management needs to be checked by narrowing s...SecurityBeginner13 minFreeLINUX-024File exists but service user cannot follow parent directoryFile exists but service user cannot follow parent directory is a hands-on troubleshooting drill. The file permission looks fine, but one directory in the path denies execute permission and breaks access. Azure Linux Service Operations needs to be checked by narrowing scope, re...LinuxBeginner14 minFreeLINUX-021Cron job runs manually but fails under non-login shellCron job runs manually but fails (404 and Rewrite Mismatch) is a hands-on troubleshooting drill. The command succeeds interactively but breaks in cron because environment setup and path assumptions are missing. Azure Linux Service Operations needs to be checked by narrowing sc...LinuxBeginner15 minFreeNETWORK-021Proxy forwards HTTPS as HTTP after port-based rule rewriteProxy forwards HTTPS as HTTP (Timeouts and Latency) is a hands-on troubleshooting drill. Traffic reaches the proxy, but a port rewrite changes the scheme assumption and breaks the application redirect flow. NGINX Firewall and Proxy Paths needs to be checked by narrowing scope,...NetworkBeginner15 minFreeSECURITY-013Security group allows HTTPS but blocks OCSP responder pathThe application endpoint is reachable, yet revocation or trust verification fails because outbound checks cannot complete.SecurityBeginner15 minFreeCICD-014The test report is generated, but the upload path differs so the quality gate is emptyThe test report is generated, but the upload path differs so the quality gate... is a hands-on troubleshooting drill. Covers a situation where a single artifact path typo drops the quality metric yet the pipeline still passes. GitHub GitHub Actions Workflows needs to be checke...CI/CDBeginner15 minFreeSECURITY-022TLS redirect loop created by mixed secure proxy headersTLS redirect loop created by mixed secure proxy headers is a hands-on troubleshooting drill. Security hardening intends to force HTTPS, but conflicting proxy headers produce an endless redirect path. TLS and Certificate Chain needs to be checked by narrowing scope, recent chan...SecurityBeginner15 minFreeK8S-093Service selector is correct but EndpointSlice labels point the controller at the wrong shardThe Service definition looks fine, yet traffic still misses the intended backend because a generated EndpointSlice path is bound to an outdated label set.KubernetesIntermediate17 minFreeSECURITY-004Sudo policy grants command access but denies required shell pathThe command is technically allowed, yet execution still fails because the wrapper path differs from the approved binary.SecurityBeginner14 minFreeSECURITY-005IAM role rotation leaves one batch worker using stale credentialsMost services refresh correctly, but one worker process keeps using cached credentials and starts failing scheduled jobs.ReviewedSecurityIntermediate20 minProNETWORK-019After a BGP route change, only certain ASNs take a detour pathA network operations problem where the global route is alive but only certain carrier networks get an inefficient detour.NetworkAdvanced30 minProK8S-007A metrics pipeline problem where scaling does not rise even though an HPA is attachedTracks the metrics flow in a situation where resource usage is high but the autoscaler does not react.KubernetesAdvanced26 minProK8S-009Only certain APIs return 404 due to an Ingress path-rewrite rule mismatchCovers a path-rewrite problem where health checks pass but only real user requests fail.KubernetesIntermediate24 minProSECURITY-098CloudFront signed cookie scope excludes the websocket upgrade host and only the browser terminal loses authStatic pages load normally, but the interactive browser tool fails because the signed cookie domain or path does not cover the upgraded endpoint host.SecurityAdvanced16 minProCICD-097S3 static site deploy uploads the new assets but old signed URLs stay embedded in the manifestThe files exist in the bucket, yet clients keep failing because the generated manifest still references stale signed asset URLs from the previous build.CI/CDAdvanced16 minPro