| Code | Keyword | Description | rsyslog | journald |
|---|---|---|---|---|
| 0 | emerg | System is unusable | *.emerg | emerg |
| 1 | alert | Action must be taken immediately | *.alert | alert |
| 2 | crit | Critical conditions | *.crit | crit |
| 3 | err | Error conditions | *.err | err |
| 4 | warning | Warning conditions | *.warning | warning |
| 5 | notice | Normal but significant condition | *.notice | notice |
| 6 | info | Informational messages | *.info | info |
| 7 | debug | Debug-level messages | *.debug | debug |