Message loggingΒΆ

This section shows how to modify the logging levels by NetworkManager.

NetworkManager supports on the fly changing of the logging levels and allows for a fine grained control over what is logged.

First check what is the current logging setup, type:

nmcli general logging

As a result you will be presented with the information about the current configuration:

LEVEL  DOMAINS                                                                                                                                                                                                                 
INFO   PLATFORM,RFKILL,ETHER,WIFI,BT,MB,DHCP4,DHCP6,PPP,IP4,IP6,AUTOIP4,DNS,VPN,SHARING,SUPPLICANT,AGENTS,SETTINGS,SUSPEND,CORE,DEVICE,OLPC,INFINIBAND,FIREWALL,ADSL,BOND,VLAN,BRIDGE,TEAM,CONCHECK,DCB,DISPATCH,AUDIT,SYSTEMD

It is possible to change the level either globally or for each domain separately. The command to achieve this is:

nmcli general logging [level <level> [domain <domain>]]

The is the desired log level. You can choose from the following:

  • ERR: will log only critical errors

  • WARN: will log warning messages

  • INFO: will log various informational messages

  • DEBUG: enables verbose logging for debugging purposes

  • <domain> is the category of messages that shall be logged with given severity.

    • Wi-Fi will include only Wi-Fi related messages

    • IP4 will include only IPv4 related messages, and so on.