Hi all,
When you monitor your node using the dashboard it is useful to know if the dashboard is/was down. Furthermore, sometimes during an upgrade the permissioning server is offline. If this happens the nodes are in error.
You can check both yourself, but I made a public dashboard using uptime robot:
https://stats.uptimerobot.com/YWBP9F3m07
For more information on how to monitor your node yourself check this guide.