Server not reachable


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Hi, something happend this night and the Server was not reachable from the local network. After hard reset ""power off" the server starts running properly. This is the last log that received from server:

 

It seems there a lot network issues? By the way at 1:00 it starts a backup of my Docker appdata.  (Appdata.Backup)

 

Mar  4 01:01:04 Tower kernel: veth30a58bb: renamed from eth0
Mar  4 01:01:04 Tower kernel: veth00da9cf: renamed from eth0
Mar  4 01:01:06 Tower kernel: vethcd6745b: renamed from eth0
Mar  4 01:01:06 Tower kernel: veth60d5d03: renamed from eth0
Mar  4 01:01:07 Tower kernel: vethbb4d0b3: renamed from eth0
Mar  4 01:01:07 Tower kernel: vethe8a0781: renamed from eth0
Mar  4 01:01:12 Tower kernel: veth628ba8c: renamed from eth0
Mar  4 01:01:13 Tower kernel: veth710ddf1: renamed from eth0
Mar  4 01:01:13 Tower kernel: veth2c67992: renamed from eth0
Mar  4 01:01:14 Tower kernel: veth68e5056: renamed from eth0
Mar  4 01:01:15 Tower kernel: vethb6d5f57: renamed from eth0
Mar  4 01:01:20 Tower kernel: veth0a6f738: renamed from eth0
Mar  4 01:01:26 Tower kernel: veth8afb35f: renamed from eth0
Mar  4 01:01:26 Tower kernel: vethf50f2c4: renamed from eth0
Mar  4 01:01:28 Tower kernel: docker0: port 1(vethd9eada9) entered disabled state
Mar  4 01:01:28 Tower kernel: veth7ebc59c: renamed from eth0
Mar  4 01:01:29 Tower kernel: docker0: port 1(vethd9eada9) entered disabled state
Mar  4 01:01:29 Tower kernel: device vethd9eada9 left promiscuous mode
Mar  4 01:01:29 Tower kernel: docker0: port 1(vethd9eada9) entered disabled state
Mar  4 01:01:33 Tower kernel: veth8147789: renamed from eth0
Mar  4 01:01:42 Tower kernel: veth3fb5ef5: renamed from eth0
Mar  4 01:01:44 Tower kernel: vethad0725a: renamed from eth0
Mar  4 01:01:55 Tower kernel: vethd22e44c: renamed from eth0
Mar  4 01:02:10 Tower kernel: vethbe7b9d3: renamed from eth0
Mar  4 01:02:11 Tower kernel: docker0: port 1(veth1c51ad7) entered blocking state
Mar  4 01:02:11 Tower kernel: docker0: port 1(veth1c51ad7) entered disabled state
Mar  4 01:02:11 Tower kernel: device veth1c51ad7 entered promiscuous mode
Mar  4 01:02:14 Tower kernel: eth0: renamed from veth4422939
Mar  4 01:02:14 Tower kernel: IPv6: ADDRCONF(NETDEV_CHANGE): veth1c51ad7: link becomes ready
Mar  4 01:02:14 Tower kernel: docker0: port 1(veth1c51ad7) entered blocking state
Mar  4 01:02:14 Tower kernel: docker0: port 1(veth1c51ad7) entered forwarding state
Mar  4 01:02:17 Tower kernel: eth0: renamed from veth4d295c1
Mar  4 01:02:17 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:02:19 Tower kernel: eth0: renamed from vethff47134
Mar  4 01:02:19 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:02:22 Tower kernel: eth0: renamed from veth6398c38
Mar  4 01:02:22 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:02:27 Tower kernel: eth0: renamed from veth64e7d71
Mar  4 01:02:27 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:02:31 Tower kernel: eth0: renamed from veth04c1a21
Mar  4 01:02:31 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:02:34 Tower kernel: eth0: renamed from veth3d1be86
Mar  4 01:02:34 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:02:37 Tower kernel: eth0: renamed from veth11676dd
Mar  4 01:02:37 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:02:41 Tower kernel: eth0: renamed from vethd3fa0d0
Mar  4 01:02:41 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:02:44 Tower kernel: eth0: renamed from veth2fe8a48
Mar  4 01:02:44 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:02:47 Tower kernel: eth0: renamed from vethf6a7292
Mar  4 01:02:47 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:02:51 Tower kernel: eth0: renamed from veth09e4ce5
Mar  4 01:02:51 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:02:54 Tower kernel: eth0: renamed from veth3a4776a
Mar  4 01:02:54 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:02:58 Tower kernel: eth0: renamed from veth6ca1441
Mar  4 01:02:58 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:03:02 Tower kernel: eth0: renamed from veth5a641ad
Mar  4 01:03:02 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:03:05 Tower kernel: eth0: renamed from veth6702d54
Mar  4 01:03:05 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:03:09 Tower kernel: eth0: renamed from veth45a5fdc
Mar  4 01:03:09 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:03:13 Tower kernel: eth0: renamed from veth8ead0f1
Mar  4 01:03:13 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:03:17 Tower kernel: eth0: renamed from vethd7596cf
Mar  4 01:03:17 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0
Mar  4 01:03:25 Tower kernel: eth0: renamed from veth81bff7d
Mar  4 01:03:25 Tower kernel: 8021q: adding VLAN 0 to HW filter on device eth0

 

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Those messages are perfectly normal when docker containers start up.   If you are getting it frequently then you probably have a container that is crashing - you can check the uptime for your containers to spot a culprit.

 

You should post your system's diagnostics zip file in your next post in this thread to get more informed feedback.  It is always a good idea to post this if your question might involve us seeing how you have things set up or to look at recent logs.

 

The syslog in the diagnostics is the RAM version that starts afresh every time the system is booted.  You should enable the syslog server (probably with the option to Mirror to Flash set) to get a syslog that survives a reboot so we can see what leads up to a crash.  The mirror to flash option is the easiest to set up (and if used the file is then automatically included in any diagnostics), but if you are worried about excessive wear on the flash drive you can put your server's address into the remote server field. 

 

 

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I found this kind of messages  in the Log - is that normal?

 

Mar  6 21:34:42 Tower kernel: usb 4-3: reset SuperSpeed USB device number 2 using xhci_hcd
Mar  6 21:34:42 Tower kernel: usb 4-3: LPM exit latency is zeroed, disabling LPM.
Mar  7 06:44:33 Tower kernel: usb 4-3: reset SuperSpeed USB device number 2 using xhci_hcd
Mar  7 06:44:33 Tower kernel: usb 4-3: LPM exit latency is zeroed, disabling LPM.
Mar  7 16:01:14 Tower kernel: usb 4-3: reset SuperSpeed USB device number 2 using xhci_hcd
Mar  7 16:01:14 Tower kernel: usb 4-3: LPM exit latency is zeroed, disabling LPM.
Mar  7 17:29:44 Tower kernel: usb 4-3: reset SuperSpeed USB device number 2 using xhci_hcd
Mar  7 17:29:44 Tower kernel: usb 4-3: LPM exit latency is zeroed, disabling LPM.

 

Quote

The previous syslog only covers 10 minutes uptime, and there's nothing there relevant, did the server crash after 10 minutes?

 

Nope I started the server after the crash and did the diagnostics - the mirror logfile to flash was activated during the crash. As mentioned by itimpi (and my understanding is) that the logfile should survives  a reboot, so I am confused that the log ist not available in this diagnostics.

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3 hours ago, snowy00 said:

the mirror logfile to flash was activated during the crash. As mentioned by itimpi (and my understanding is) that the logfile should survives  a reboot, so I am confused that the log ist not available in this diagnostics.

the problem is that what looks like the mirrored syslog shows the system being shutdown for a reboot - not the server crashing.

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