Logging levels range from 0 to 7, and represent a decreasing order of severity. The default logging level for projects is 4.
| Name | Level | Description |
|---|---|---|
| LOG_EMERG | 0 | system is unusable |
| LOG_ALERT | 1 | action must be taken immediately |
| LOG_CRIT | 2 | critical conditions |
| LOG_ERR | 3 | error conditions |
| LOG_WARNING | 4 | warning conditions |
| LOG_NOTICE | 5 | normal but significant condition |
| LOG_INFO | 6 | informational |
| LOG_DEBUG | 7 | debug-level messages |