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GUI and SMB losing connection, Dockers and ping still working

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Having some weird networking behavior on Unraid 6.12.6. I'm periodically losing access to the management GUI and SMB shares on my server. The loss of access seems to be for 30 seconds to 3 minutes in duration. Curiously, the Docker containers I have running remain accessible during these outages (both those using custom IP and bridging) and I can still ping the server's IP. I've done the usual reboots, tried disabling bonding, tried only having one NIC connected, tried a BIOS update. Other devices I have that are connected to the same network are not having similar issues. 

tower-diagnostics-20240113-1351.zip

  • Community Expert

Nothing jumps out in the log, do you know the time it lasted happened?

You have docker containers needing updates:

Jan 13 13:24:00 Tower root: Fix Common Problems: Warning: Docker Application homeassistant has an update available for it
Jan 13 13:24:00 Tower root: Fix Common Problems: Warning: Docker Application Pihole-DoT-DoH has an update available for it
Jan 13 13:24:00 Tower root: Fix Common Problems: Warning: Docker Application plex has an update available for it
Jan 13 13:24:00 Tower root: Fix Common Problems: Warning: Docker Application sonarr-1 has an update available for it
Jan 13 13:24:00 Tower root: Fix Common Problems: Warning: Docker Application Stash has an update available for it

One is pihole.  Update the docker containers and see if it helps.

  • Author
5 hours ago, dlandon said:

You have docker containers needing updates:

Jan 13 13:24:00 Tower root: Fix Common Problems: Warning: Docker Application homeassistant has an update available for it
Jan 13 13:24:00 Tower root: Fix Common Problems: Warning: Docker Application Pihole-DoT-DoH has an update available for it
Jan 13 13:24:00 Tower root: Fix Common Problems: Warning: Docker Application plex has an update available for it
Jan 13 13:24:00 Tower root: Fix Common Problems: Warning: Docker Application sonarr-1 has an update available for it
Jan 13 13:24:00 Tower root: Fix Common Problems: Warning: Docker Application Stash has an update available for it

One is pihole.  Update the docker containers and see if it helps.

Those containers being out-of-date existed before the problem occurred. I updated the containers anyway, no change.

  • Author
14 hours ago, JorgeB said:

Nothing jumps out in the log, do you know the time it lasted happened?

I think in the log I posted the most recent occurrence was in the last 10 minutes. The only log entry that I don't ever recall seeing before this problem happened is "Tower monitor: Stop running nchan processes".

  • Author

Some other things I've noticed in testing: SSH connections are being refused, and the following code block shows up in the log around the same time as I lose connection to the server: 

Jan 14 22:14:46 Tower kernel: veth1cd4618: renamed from eth0
Jan 14 22:14:46 Tower kernel: docker0: port 2(veth6436d01) entered disabled state
Jan 14 22:14:47 Tower kernel: docker0: port 2(veth6436d01) entered disabled state
Jan 14 22:14:47 Tower kernel: device veth6436d01 left promiscuous mode
Jan 14 22:14:47 Tower kernel: docker0: port 2(veth6436d01) entered disabled state
Jan 14 22:15:01 Tower kernel: docker0: port 2(veth6c69648) entered blocking state
Jan 14 22:15:01 Tower kernel: docker0: port 2(veth6c69648) entered disabled state
Jan 14 22:15:01 Tower kernel: device veth6c69648 entered promiscuous mode
Jan 14 22:15:01 Tower kernel: docker0: port 2(veth6c69648) entered blocking state
Jan 14 22:15:01 Tower kernel: docker0: port 2(veth6c69648) entered forwarding state
Jan 14 22:15:01 Tower kernel: docker0: port 2(veth6c69648) entered disabled state
Jan 14 22:15:15 Tower kernel: eth0: renamed from veth29ff5eb
Jan 14 22:15:15 Tower kernel: IPv6: ADDRCONF(NETDEV_CHANGE): veth6c69648: link becomes ready
Jan 14 22:15:15 Tower kernel: docker0: port 2(veth6c69648) entered blocking state
Jan 14 22:15:15 Tower kernel: docker0: port 2(veth6c69648) entered forwarding state

 

  • Author

Further investigating, memtest86 shows memory errors. However, my config is 2 sticks of 16GB DDR4 ECC. Both sticks showed errors in memtest86, both individually and in pairs, and in all slots, which makes me think the memory isn't actually the problem. The odds of 2 sticks failing simultaneously seem very small to me. I've ordered a new stick of ECC DDR4 to try, but I'm starting to think this is a CPU or motherboard issue.

  • Community Expert
1 hour ago, sylinen said:

but I'm starting to think this is a CPU or motherboard issue.

That's a strong possibility.

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