Unwanted reboot of Cerbo GX

[ricardocello (Rick)]

The watchdog reboots the Cerbo if CPU usage is too high for too long.

If you know how to ssh into the Cerbo, you can edit the /etc/watchdog.conf file to raise the thresholds for rebooting.

Unwanted Reboots

From time to time my Cerbo shows unwanted reboots with a loss of power production. As Venus complaints about logged in users or devices before shutting down, it does not seem to be any unexpected hardware problem. 10.10.20.158 is my PC with port 1881 connection to NR and ttypS0 connects a smart shunt. Are there any ways to see the reason from system view? Last login: Sat Jul 26 07:00:40 2025 root@einstein:~# last root pts/0 10.10.20.158 Sat Jul 26 07:59 still logged in root…

Unwanted Reboots

Obviosly, Modbus TCP operations sometimes occupy many CPU time. After changing the data transfer from single scattered float values to 100 byte transfers, the occasional peaks in CPU time for NR seems to be less. Typical average of NR task is now about 15-20% CPU time. There is still one reboot about once a day. Using vi (is there anything else in Venus?) I changed watchdog.conf. What are the values max-load-5 and max-load-15 and do I have to change both? root@einstein:/etc# cat watchdog.conf …