Journalctl log record

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
1

Hi,
I am using journalctl to record the log with enabling Storage=persistent in /etc/systemd/journald.conf. However, I found every time I use reboot command, the previous logs will be lost due to the new log start from 2023-11-21 20:57:18. I am very curious about where is the date-time 2023-11-21 20:57:18 comes from?

nvidia@tegra-ubuntu:~$ journalctl --list-boots 
0 a948c685177b47d8bf49b4ce7fdc7833 Tue 2023-11-21 20:57:18 UTC—Tue 2025-03-18 03:04:07 UTC

BR,
Justin

5

Hi,
We searched online and found a discussion:
systemd - Why `journalctl --list-boots` doesn't match what `uptime` and `who -b` report? - Unix & Linux Stack Exchange

It seems like it scans timestamps under /var/log/ folder. In the folder, 2023-11-21 looks to be from

/var/log/alternatives.log

7

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.