Cheatsheet: Systemd/Systemctl
- PDF Link: cheatsheet-systemd-A4.pdf, Category: linux
- Blog URL: https://cheatsheet.dennyzhang.com/cheatsheet-systemd-A4
- Related posts: CheatSheet: Ubuntu Apt, Cheatsheet: Linux Security, #denny-cheatsheets
1.1 Systemd manage service
| Name | Summary |
|---|---|
| Check service | systemctl status $service_name, systemctl -l status $service_name |
| Service cfg file | /lib/systemd/system/ |
1.2 Systemd check log
| Name | Summary |
|---|---|
| Check log of systemd service | journalctl -u docker, journalctl -p err -u docker |
| Filter log by a timeslot | journalctl --since 10:00 --until "1 hour ago" -u docker |
| View kernel messages | journalctl -k |
| Check logs with error level | journalctl -p err -b |
1.3 Systemd Trouble Shooting
| Name | Summary |
|---|---|
| Force machine reboot, if reboot doesn’t work | systemctl --force reboot, systemctl --force --force reboot |
