With 25.7 I don't seem to be able to get netflow working.
- destination is set to 127.0.0.1:2056
- lan, wan are listening
- wan interface is 'wan'
- local capture is selected
- using v9
- insight aggregator/netflow distributor are running (and has been restarted)
- I've reset the rrd & netflow data
I still don't seem to get any data showing up under reporting->insight
I cannot 'telnet 127.0.0.1:2056'
I do have a large flowd.log file
Yes, I see the same after upgrading to 25.7; nothing in Reporting -> Insight at all.
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It's just the Insight->Totals and Insight->Details views which are coming up blank for me.
I see that the .csv file exports from Insight do contain data for today's date.
I'm giving this a look and see if I can find anything weird going on.
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Same thing. I have repair and reset the netflow data and it didn't solve it
+1 Tried bouncing flowd service, clearing all netflow data and restart, restored RRD data after restart, zip, nothing shows up in insight graph any more.
It was a regression accidentally caused in the camelCase to snake_case conversion.
Can somebody try:
opnsense-patch https://github.com/opnsense/core/commit/bc03efcef593f0e5235c1e1003b701e7b003d5ce
That fixed it. :)
Yep I also confirm that fixed it. Thanks for the fast support!
confirmed the patch resolved the issue for me as well.
and also confirmed here (op)!
Same here patch worked perfectly.
Fantastic verry quick response, a big tank you for all your hard work it really is appreciated.
works fine :) thanks ;)
Is this patch still working for you all?
Because immediately after patching it looks ok, but a few minutes later I am seeing "undefined" again.
Did you by chance apply it more than once? According to 'man opnsense-patch', applying it a second time reverts the change.
Quote from: OPNenthu on July 27, 2025, 10:27:53 AMDid you by chance apply it more than once? According to 'man opnsense-patch', applying it a second time reverts the change.
No. I checked the file "networkinsight.volt" too. And now it is working again. Maybe I was too fast ;)
Edit: after a new login "undefined" again. It is intermittent.
Hmm, I am seeing some strangeness, but I'm not sure if this is how Insight behaves normally or not.
I'm seeing that the graph totals will randomly nosedive (but not all the way to zero). Some much low(er) counts will show until a later time (>30 min.) when the chart total suddenly gets adjusted.
This shows the issue between about 7:15am and 7:45am local time. The chart scale hasn't changed, but the data in that time period has.
A.png
B.png
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EDIT: I just observed the same thing again between 8:15-8:45... so it seems that 30 min. is just the interval that Insight graphs get updated. Nothing to see here in that case.
Anyway, I for one am not seeing the original issue since applying the patch.
Patch bc03efcef593f0e5235c1e1003b701e7b003d5ce also worked for me
Thanks for the patch - that's fixed it for me. After hours of checking logs, flowd service health, etc... Thank you :)
The patch also worked for me. I had to go to Reporting > Settings and clean things up, though.
One word of caution to those who come after--my disk filled up with netflow data in a few days, so I suggest that you either apply the patch, turn off netflow, or downgrade until this is fixed.
Works for me too.
But before that, I tried to reset RRD data/NetFlow data, repair NetFlow data.
I lost all the data from the past few years.
:(
Did this patch make it into 25.7.1? The patch notes did refer to netflow, but used different language than in this thread.
https://github.com/opnsense/changelog/blob/0dd232860901098b633e6505179a9f3c98001604/community/25.7/25.7.1#L12