Linux
390 incident problems in Linux environments.
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All problems (390)
LINUX-1364A Fedora host updates cleanly and containerized DNS failsA Fedora host updates cleanly and containerized DNS fails focuses on dns-resolution and asks the reader to isolate the key signal in Linux. Split-DNS failures often come from stale link association inside the resolver, not from ba...LinuxAdvanced14 minProLINUX-1344A journald directory size cap is raised and disk pressure staysAn operator increases journald limits during a disk incident and later finds that the biggest growth path never responded to the change.LinuxAdvanced14 minProLINUX-1350A local package mirror update succeeds and apt still rejects metadataA local package mirror update succeeds and apt still rejects metadata focuses on Identity And Access and asks the reader to isolate the key signal in Linux. Package trust failures after migration often mean one host still uses a d...LinuxAdvanced14 minProLINUX-1348A log shipping agent restarts foreverA host monitoring agent upgrade seems routine and later the service starts crash-looping despite a valid configuration and reachable backend.LinuxAdvanced14 minProLINUX-1379A mount unit reports success at boot and the application still sees an empty...A mount unit reports success at boot and the application still sees an... focuses on runtime-configuration and asks the reader to isolate the key signal in Linux. A green mount unit can still be wrong if it raced the network path behind the mount...LinuxAdvanced14 minProLINUX-1329A network mount unit waits on network-online.target and still failsA network mount unit waits on network-online.target and still fails focuses on network-segmentation and asks the reader to isolate the key signal in Linux. Generic network readiness is often too weak for path-specific mounts.LinuxAdvanced14 minProLINUX-1394A network-online target is reached and one VPN-dependent service still failsA network-online target is reached and one VPN-dependent service still fails focuses on network-segmentation and asks the reader to isolate the key signal in Linux. Network-online means very little for services that depend on specific rout...LinuxAdvanced14 minProLINUX-1386A NetworkManager bridge migration works and one VLAN loses connectivityA host networking migration moves to keyfiles and later one VLAN becomes intermittently unreachable after reboot.LinuxAdvanced14 minProLINUX-1360A package mirror migration looks complete and one host still rejects metadataA package mirror migration looks complete and one host still rejects metadata focuses on Identity And Access and asks the reader to isolate the key signal in Linux. Repository trust failures after migration often mean a host is s...LinuxAdvanced14 minProLINUX-1352A Podman rootless service survives reboot and loses egressA Podman rootless service survives reboot and loses egress focuses on network-segmentation and asks the reader to isolate the key signal in Linux. Post-reboot networking issues often stem from host profile drift rather t...LinuxAdvanced14 minProLINUX-1368A rootless Podman service reports healthy and the first outbound call failsA rootless Podman service reports healthy and the first outbound call fails focuses on firewall-policy-basics and asks the reader to isolate the key signal in Linux. Reload-safe firewall state matters more when user-namespace-specific rule...LinuxAdvanced14 minProLINUX-1384A sudo policy looks correct and one automation user loses accessA sudo policy looks correct and one automation user loses access focuses on Identity And Access and asks the reader to isolate the key signal in Linux. Sudo regressions often come from tag precedence and include ordering, not from the presen...LinuxAdvanced14 minProLINUX-1311Docker starts after boot and one volume is emptyA host reboots after maintenance and containers look healthy while silently writing to the wrong underlying storage.LinuxIntermediate14 minProLINUX-1605A logrotate script is fixed and one archive still doublesOne log archive still duplicates after a logrotate fix.LinuxIntermediate8 minProLINUX-1602A rsyslog forwarding fix lands and one spool still growsOne rsyslog spool keeps growing after a storage migration.LinuxIntermediate8 minProLINUX-1515A symlink deployment completes and one worker still serves stale templatesOnly one worker serves stale content after a symlink-based deploy.LinuxIntermediate9 minProLINUX-1525A symlink deployment completes and one worker still serves stale templatesOnly one worker serves stale content after a symlink-based deployment.LinuxIntermediate9 minProLINUX-1495An rsync deploy finishes and the app still reads stale templatesOnly one worker process serves stale templates after a symlink-based rsync deployment.LinuxIntermediate9 minProLINUX-1505An rsync deploy finishes and the app still reads stale templatesOnly one worker serves stale templates after a symlink-based deployment.LinuxIntermediate9 minProLINUX-1395A sudoers rule looks correct and a command still prompts for a passwordAn automation wrapper is introduced and later a previously passwordless command begins prompting unexpectedly.LinuxIntermediate10 minPro