Does the GX Cerbo reboot or restart services when WAN collapses

Is the following information correct?

When the WAN interface goes into one of these states:

  • DHCP lease lost

  • DNS resolver unreachable

  • IPv6 prefix withdrawn

  • Gateway unreachable

  • Routing table reset

  • NTP sync failure

  • Network stack panic

…the GX will:

:check_mark: restart its network stack

:check_mark: restart some services

:check_mark: sometimes fully reboot if the watchdog triggers

I have had this issue more than once recently after changing internet providers

Is this set in VRM?

Actually no, it is sett to OFF

In this case, the Cerbo shouldn’t reboot upon network connectivity loss. If it does anyway, the reason may be the watchdog being too sensitive. Check the log files for the reason of the reboot, and if it was the watchdog, increase the threshold to avoid reboots.

Check the dbus roundtrip time widget for the cerbo, under advanced.
If you see elevated latency then the cerbo is busy.

I’m sorry for asking, but I think I need some gudance on where and how to check the log. Is this in VRM or directly from the Cerbo Console?

I cannot find the widget that includes DBUS in VRM, am I looking in the wrong place?

VRM/advanced. Create a custom widget using gateway dbus roundtrip time. It gives a general indication of Cerbo loading.

You can also ssh into the Cerbo to check the watchdog file for clues. Add any OS large features that depend on the network? top or htop is another tool used for Cerbo load.

/var/log/venus-platform/current - Is this accessible only via SSH?

Yes, that’s via SSH. The dbus load in vrm gives an indication about system load. Mine is very high, but with the watchdog parameters set high enough, there are no unwanted reboots.

Check out the thread I’ve linked before for more discussions about the watchdog behavior.

Log files can be viewed via SSH:
root@einstein:/var/log# cat messages.0

There are a couple log files in that directory:



root@VictronCerboEinstein:/var/log# ls -l

-rw-r–r--    1 root     root           292 May 15 18:23 lastlog
drwx------    2 root     root          4096 May 15 18:16 localsettings
-rw-r–r--    1 root     root         34681 May 15 18:23 messages
-rw-r–r--    1 root     root        102463 May 15 14:29 messages.0
-rw-r–r--    1 root     root        102476 May 15 02:57 messages.1
-rw-r–r--    1 root     root        102463 May 14 15:47 messages.2
-rw-r–r--    1 root     root        102470 May 14 04:15 messages.3
-rw-r–r--    1 root     root        102463 May 13 16:49 messages.4
-rw-r–r--    1 root     root        102470 May 13 05:17 messages.5

“messages” and “lastlog” are current, “messages.0” through “messages.5” are backups. After reboot, check in there. Most likely, some watchdog action was the reason.

I’ve left my newly created widget running for a few days now, however I’m not sure how to interpret it