An overview of the Syslog levels:
| 0 | emergencies | System is unusable | (severity=0) |
| 1 | alerts | Immediate action needed | (severity=1) |
| 2 | critical | Critical conditions | (severity=2) |
| 3 | errors | Error conditions | (severity=3) |
| 4 | warnings | Warning conditions | (severity=4) |
| 5 | notifications | Normal but significant conditions | (severity=5) |
| 6 | informational | Informational messages | (severity=6) |
| 7 | debugging | Debugging messages | (severity=7) |