The log_level key specifies the level of data logged. Valid values are debug (the highest volume of log lines), info, notice, warn, err, crit, alert, and emerg (the lowest volume of log lines). The default is info.
Change this setting using one of the following methods:
Web UI (see Setting the Minimum Logging Level).
API custom configuration channels (see Using API Custom Configuration Channels).
Manually on individual endpoints using a text editor (see Modifying the Configuration File for a Single Endpoint).