LevelAlert means a person must take an action immediately.

LevelCritical means events that cause more severe problems or brief outages.

LevelDebug means debug or trace information.

LevelDefault means the log entry has no assigned severity level.

LevelEmergency means one or more systems are unusable.

LevelError means events that are likely to cause problems.

LevelInfo means routine information, such as ongoing status or performance.

LevelNotice means normal but significant events, such as start up, shut down, or configuration.

LevelWarning means events that might cause problems.