A post in the Netdata community forums helped me. (Can’t post a link - maybe because I’m new? Search for "Nvidia-smi use to monitor quadro gpus" site:netdata.cloud.
It took some futzing, so these steps might not be exact. but I think this is what worked:
cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config python.d.conf
Add: nvidia_smi: yes
Restart the service (I think this created the default conf file):
sudo systemctl restart netdata
Modify the configuration file:
sudo ./edit-config python.d/nvidia_smi.conf
Add/uncomment and modify these lines:
loop_mode: yes
poll_seconds: 1
Restart the service (again):
sudo systemctl restart netdata