NANO SD: major failure

[36260]

Hello,
NANO SD has been running without modifications since its installation (14 days). June the 7th, around 10pm, I dicovered that all weather networks that are set up ( Wundeground, Awekas, PWS, FTP upload) stopped to receive updates since around 9 am of the same day. Data looging was still working, no data loss is at stake. Looking at system tab, I discovered that buffer data was 1000 items (100%). I took the decision to reboot the system. Everything went back to normal operation after that. Buffer reports now 2 items (0%). The software has been updated during the reboot process (previous version was dated around 14 May, if I recall well). No internet failure has been noticed for that particular day.
I can't find any logging file prior reboot. I would happy to send it, if there is any.
I'm currently transitionning from a raspberry meteohub installation that has been running flawlessy for years.
I have two questions:
- anybody experienced such a failure?
- can we expect a fullproof system that can be run unattended?
Thank you

[ConligWX]

when buffer is full it usually means either internet connection dropped or the NanoSD's WiFi lost connection. I have had that in the past when i first got the NanoSD. mine has been unattended for ages. though you can never guarantee your wifi, LAN Internet, routing of the servers you feed, none will be up 100% of the time.

firstly start with wifi signal. is it strong? is there any other wifi signals in your area interfering with your own wifi signal/channel. did your router/WAP reboot. you will need to investigate what went on and figure out why. Power outage perhaps? Also possible DNS played up and thus the NANO could not send the data.

[Mattk]

I have two questions:
- anybody experienced such a failure?

No

- can we expect a fullproof system that can be run unattended?

Have been running these unattended without such issues for a year or so, not sure what specific combination of issues are causing your own localized issues?

[36260]

Thanks for your feedback. wifi is very strong and professional grade. I live in the country side, very small village, almost nothing else in the area. When I connected to the nano HD I had no difficulties. I did not have any warning either. I don't expect a network issue. Anyhow a buffer saturation without warning and without automatic recovery should be addressed.
I'm wondering whether there are somewhere in the folders history logs so Boris could troubleshoot.

[36260]

Should have added that power supply is 1A

[Mattk]

So you have a red handle NanoSD then?

[36260]

Yes. But wifi is set with no boost

[rks]

Hi, You may find this link to a discussion of a similar problem to yours useful: viewtopic.php?p=32319#p32319
My Nano SD has run faultlessly since I positioned the Davis console + Nano SD to receive a signal directly from the router and not from a repeater/range extender. I use a fixed IP address not DHCP. Finally, I update WU and local dashboard at 1 minute intervals.

[36260]

Thanks for info. However it cannot be a WIFI issue because every minute a server inside the LAN connects to NANO to grab data. No interruption in the service has been noticed. There are no repeater. There are several APs all connected to the router.
To repeat what has been said in the OP, I'm very surprised that no warning is sent when the buffer becomes saturated. It would be also very helpfull to have access to history logs; are there any?
We'd like to have some feedback from Boris. Any chance?

[ConligWX]

Thanks for info. However it cannot be a WIFI issue because every minute a server inside the LAN connects to NANO to grab data. No interruption in the service has been noticed. There are no repeater. There are several APs all connected to the router.
To repeat what has been said in the OP, I'm very surprised that no warning is sent when the buffer becomes saturated. It would be also very helpfull to have access to history logs; are there any?
We'd like to have some feedback from Boris. Any chance?

email Boris. he does work for a living and is busy as stated previously. smartbedded info(at)smartbedded.com

[admin]

Try to avoid retries on the service und weather network definitions. These fill up the buffer, when for some reasons packets cannot be delivered.
Please also make sure your AP does not change RF channels on the fly. NANO will loose connection otherwise.

[36260]

As I explained it not a matter of WIFI since every minute an internal server hit a template URL and no data loss has been reported. Moreover, ALL network services stalled at the same time (5 if I recall well). I'm very surprised that no warning whatsoever is delivered by email for instance.

[admin]

When you rule out my suggestions because knowing better, there is little I can do.