Flint 3 crashing when making RDP connections to a machine

Routers
1

I have tailscale set up on my Flint 3 and connect to machines behind the router using tailscale subnet routing. Twice today the router has crashed while attempting an RDP connection to one of those machines. I had my wife reboot it the first time, this time no one is home so I can no longer connect to the machine I need to access.

I’m wondering if a) there’s a log somewhere I can check to see what’s causing the crashing and b) if there’s any way to get the Flint 3 to reboot itself after a crash. It shows as offline in Good Cloud and I’m unable to connect to it at all via the web interface. It also won’t connect via ssh or respond to ping.

3

Hi

Let's answer your questions first:

a)
You can check the Admin Panel → System → Log → Crash Log for any relevant messages.
If any logs are available, please export them and send them to us via PM, along with your firmware version.

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If no crash logs are found, you may need to configure remote logging to a UDP server running on another device, via using Luci - System - System - Logging.

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b)
If the device actually freezes, the only way to recover may be to power cycle (disconnect and reconnect the power).

Regarding this issue, we need to confirm some details with you:

  1. When the problem occurs, can you check via the local LAN connection whether the router is still functioning normally? It might only be an internet outage.
  2. If the Admin Panel is also inaccessible via the local LAN, please note the LED status. If possible, record a video and share it with us via PM.
4

Thank you for the reply! Is there anymore information somewhere on how to set up the remote logging server? I’m not seeing anything in the crash logs (it’s empty), but it looks like about a half-hour or so after the crash the router recovers itself. I was able to get back into the router after the last crash by waiting and trying again - I believe it was a crash and not just an internet outage for a couple of reasons:

  1. It happens semi-consistently with RDP connections (from a secondary site)
  2. After the last crash and getting back into the router it says it has an uptime of 1 hour and 5 minutes, I know the last crash happened at about 2:20, and with knowing the uptime of the router I can surmise that it came back up about around 2:50 or so.

Thanks!

Also - I’m at a secondary location so trying to take a video of the router and check the LEDs when it crashes will not be possible. I may be able to have my spouse take a video when it happens, but between her work schedule and mine it won’t be until next January when that might be possible.

5

If you're unfamiliar with remote logging servers, consider a simpler approach:

  1. Connect your PC to Flint 3 via wired LAN, then SSH into the router and execute the following command to print system logs to the terminal:
logread -f &
while true; do dmesg -c; mpstat | grep -E 'all'; free | grep -E 'Mem'; sleep 1; done
  1. Simultaneously open PowerShell window and run the following command to check the PC-to-router connection status and print the timestamp:
ping -t 192.168.8.1 | Foreach{"{0} - {1}" -f (Get-Date),$_}
  1. After the issue occurs, export the terminal contents and use the Powershell ping records to identify the failure/recovery timestamps.

Additionally, if possible, please check whether the power supply to Flint 3 is stable.