Turning On Network Debugging
You can set
systemd-networkd to work in debug mode so that you can analyze log files with debugging information to help troubleshoot networking problems.
You can turn on network debugging by adding a drop-in file in
/etc/systemd to customize the default systemd configuration in
- Run the following command as root to create a directory with the name
systemd-networkd.service.d, including the
mkdir -p /etc/systemd/system/systemd-networkd.service.d/
- Run the following command as root to establish a
systemddrop-in unit with a debugging configuration for the network service.
cat > /etc/systemd/system/systemd-networkd.service.d/10-loglevel-debug.conf << "EOF" [Service] Environment=SYSTEMD_LOG_LEVEL=debug EOF
- Reload the
systemctldaemon and restart the
systemd-networkdservice for the changes to take effect.
systemctl daemon-reload systemctl restart systemd-networkd
- Verify your changes.
- View the log files by running this command.
journalctl -u systemd-networkd
- After debugging the network connections, turn debugging off by deleting the drop-in file.