RHCSA
862 incident response problems that help with RHCSA prep.
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All problems (862)
LINUX-1766An NFS mount works manually and boot still failsAn NFS mount succeeds after login but still fails at boot.LinuxBeginner8 minFreeLINUX-1757An NFS mount works manually and boot still waitsAn NFS mount succeeds manually but still waits at boot.LinuxBeginner8 minFreeLINUX-1776An NFS mount works manually and boot still waitsAn NFS mount succeeds after login but still fails at boot.LinuxBeginner8 minFreeLINUX-1796An NFS mount works manually and boot still waitsAn NFS mount works manually but still waits at boot.LinuxBeginner8 minFreeLINUX-1806An NFS mount works manually and boot still waitsAn NFS mount works manually but still waits at boot.LinuxBeginner8 minFreeLINUX-1836An NFS mount works manually and boot still waitsAn NFS mount works manually but still waits at boot.LinuxBeginner8 minFreeLINUX-1846An NFS mount works manually and boot still waitsAn NFS mount works manually but still waits at boot.LinuxBeginner8 minFreeLINUX-1617An NGINX site is enabled and one request still serves the old rootOne host still serves the old root after an NGINX config change.LinuxBeginner8 minFreeLINUX-059Service keeps old environment valuesThe operator updates the environment file on disk, but the running service still behaves as before because the effective process state was never reloaded or restarted correctly.LinuxBeginner13 minFreeLINUX-027Tar backup excludes filesThe backup command seems valid, but quoting and wildcard expansion remove important files before archiving starts.LinuxBeginner13 minFreeLINUX-055Monthly cron cleanup runs in UTC and deletes the wrong day of dataThe script is valid, but the job executes on the system default timezone instead of the operator assumption and trims data outside the intended maintenance window.LinuxBeginner14 minFreeLINUX-072systemd override clears inherited variablesThe new drop-in looks additive, but one blank assignment actually wipes previously inherited variables and the service loses required runtime settings.LinuxIntermediate14 minFreeLINUX-020The env-var file was edited, but an already-running process does not know the valueThe env-var file was edited, but an already-running process does not know the... is a hands-on troubleshooting drill. The most basic operational problem for understanding the difference between a config file change and a process restart. Linux Service Operations needs to be ch...LinuxBeginner14 minFreeLINUX-052Application helper failsThe binary exists and permissions look correct, but the helper script or unpacked runtime tool cannot execute because the temporary mount has a stricter policy than the application expects.LinuxBeginner15 minFreeLINUX-037Tmpfs exhaustion in /run prevents a daemon socket from startingDisk usage on persistent filesystems looks normal, but the service socket cannot be created because the tmpfs used for runtime state is full.LinuxBeginner15 minFreeLINUX-034LVM extend succeeds but XFS filesystem size never changesThe volume group and logical volume show the new capacity, yet the mounted filesystem still reports the old size because the final grow step never ran.LinuxBeginner16 minFreeLINUX-1702A cron helper exists and one host still failsA scheduled task still fails after the helper was restored.LinuxBeginner6 minFreeLINUX-1731A cron helper works manually and one timer still failsA timer still fails after the helper move.LinuxBeginner6 minFreeLINUX-1741A cron helper works manually and one timer still failsA timer still fails after a helper move.LinuxBeginner6 minFreeLINUX-1761A cron helper works manually and one timer still failsA timer still fails after a helper move.LinuxBeginner6 minFree