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Is it possible to find the cause of a Linux reboot?
It may not always be possible to pinpoint the cause of a Linux reboot using a single command or from a single log file. As such, it’s always handy to know the commands and logs which capture system-related events and can shorten the time required to find the root cause.
Where do I find the reboot logs in Linux?
You can further correlate the reboot you want to diagnose with system messages. For CentOS/RHEL systems, you’ll find the logs at /var/log/messages while for Ubuntu/Debian systems, its logged at /var/log/syslog. You can simply use the tail command or your favorite text editor to filter out or find specific data.
How to find Linux reboot reason, geekflare?
Feb 13 20:23:18 ubuntumate20vm systemd[1]: Stopped Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling. Feb 13 20:23:18 ubuntumate20vm systemd[1]: Reached target Shutdown. Feb 13 20:23:18 ubuntumate20vm systemd[1]: Reached target Final Step. Feb 13 20:23:18 ubuntumate20vm systemd[1]: systemd-poweroff.service: Succeeded.
Why do I get a reboot on my computer?
As can be inferred from the below logs, such entries suggest a shutdown/reboot initiated by an administrator or root user.
Why is there only one system _ boot record?
Presence of only one SYSTEM_BOOT record could be explained by the system being up for so long prior to the crash that audit logs of the previous reboot had been rotated out so that the only result is from when the system was just booted. Note: If you’re trying to diagnose a potential crash right now, this will not help.
What does date and time mean on boot report?
The Date/Time is the time that the entry was logged into the error report during the beginning of the boot process, and so is a good approximation of the time when the system was booted.
Why do I get two consecutive system _ boot messages?
The below output lists two consecutive SYSTEM_BOOT messages, which may indicate an ungraceful shutdown though it needs to be correlated with system logs. You should have a persistent systemd-journal in order to keep a persistent journal on disk else the logs won’t persist on reboot.