Log level value between 0 (DEBUG) and 4 (FATAL). 0 (debug): Log all activity. 1 (info): Log activity such as user logins and file activities, plus warnings, errors, and fatal errors. 2 (warn): Log successful operations, as well as warnings of potential problems, errors and fatal errors. 3 (error): Log failed operations and fatal errors. 4 (fatal): Log only fatal errors that cause the server to stop.

2