Hardened 5.10.18 crashing every few days, can't find cause
by RickDeckard from LinuxQuestions.org on (#5F7ER)
I've been dealing with my hardened install, which I use as an Unbound/DNSCrypt server for the home office network, crashing every few days with no discernible core dump - even after it's already been set up and should be logging to /var/crash - or log entries. Journald always stops logging a few minutes before crash. This ALWAYS happens when I'm out of the room so I can't see anything happening on screen either. And the craziest part??
If I try to induce a crash dump through the SysRq keys, and possibly in the process figure out what in God's name is keeping this system from writing to /var/crash, the hard drive will automatically go to sleep once I press S or U. Call me crazy, but I thought the correct operations for that were "sync" and "unmount" rather than "sleep."
Sometimes I'll end up being booted to recovery mode with errors on the partition used for /var/log. I really want to know what's causing this now, because I'm all out of answers on my end.
If I try to induce a crash dump through the SysRq keys, and possibly in the process figure out what in God's name is keeping this system from writing to /var/crash, the hard drive will automatically go to sleep once I press S or U. Call me crazy, but I thought the correct operations for that were "sync" and "unmount" rather than "sleep."
Sometimes I'll end up being booted to recovery mode with errors on the partition used for /var/log. I really want to know what's causing this now, because I'm all out of answers on my end.