Red Hat Summit16장. Introduction to NetworkManager Debugging
Increasing the log levels for all or certain domains helps to log more details of the operations that NetworkManager performs. You can use this information to troubleshoot problems.
NetworkManager provides different levels and domains to produce logging information. The /etc/NetworkManager/NetworkManager.conf file is the main configuration file for NetworkManager. The logs are stored in the journal.
16.1. Introduction to NetworkManager reapply() method
NetworkManager uses profiles to manage device connection settings, which can be created, modified, or deleted through the D-Bus API. When a profile is changed, D-Bus clones the settings. To apply these changes, you must reactivate the connection’s settings or use the reapply() method.
The reapply() method has the following features:
- Updating modified connection settings without deactivation or restart of a network interface.
-
Removing pending changes from the modified connection settings. As
NetworkManagerdoes not revert the manual changes, you can reconfigure the device and revert external or manual parameters. - Creating different modified connection settings than that of the existing connection settings.
Also, reapply() method supports the following attributes:
-
bridge.ageing-time -
bridge.forward-delay -
bridge.group-address -
bridge.group-forward-mask -
bridge.hello-time -
bridge.max-age -
bridge.multicast-hash-max -
bridge.multicast-last-member-count -
bridge.multicast-last-member-interval -
bridge.multicast-membership-interval -
bridge.multicast-querier -
bridge.multicast-querier-interval -
bridge.multicast-query-interval -
bridge.multicast-query-response-interval -
bridge.multicast-query-use-ifaddr -
bridge.multicast-router -
bridge.multicast-snooping -
bridge.multicast-startup-query-count -
bridge.multicast-startup-query-interval -
bridge.priority -
bridge.stp -
bridge.VLAN-filtering -
bridge.VLAN-protocol -
bridge.VLANs -
802-3-ethernet.accept-all-mac-addresses -
802-3-ethernet.cloned-mac-address -
IPv4.addresses -
IPv4.dhcp-client-id -
IPv4.dhcp-iaid -
IPv4.dhcp-timeout -
IPv4.DNS -
IPv4.DNS-priority -
IPv4.DNS-search -
IPv4.gateway -
IPv4.ignore-auto-DNS -
IPv4.ignore-auto-routes -
IPv4.may-fail -
IPv4.method -
IPv4.never-default -
IPv4.route-table -
IPv4.routes -
IPv4.routing-rules -
IPv6.addr-gen-mode -
IPv6.addresses -
IPv6.dhcp-duid -
IPv6.dhcp-iaid -
IPv6.dhcp-timeout -
IPv6.DNS -
IPv6.DNS-priority -
IPv6.DNS-search -
IPv6.gateway -
IPv6.ignore-auto-DNS -
IPv6.may-fail -
IPv6.method -
IPv6.never-default -
IPv6.ra-timeout -
IPv6.route-metric -
IPv6.route-table -
IPv6.routes -
IPv6.routing-rules
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