Well it looks like my C4 hub has officially bit the dust. The hub was working fine with no issues at all until this morning I woke up to find no lighting automation working and web UI not accessible.
I tried the following with no success.
- Power cycling (Let hub sit unplugged for hours sometimes between cycles)
- Swap Ethernet cables
- Swapped power adapters
- Different port on switch
- Removed USB stick
- Attempted accessing diagnostic menu but not accessible.
- Removed DHCP reservation in Pfsense but no new IP was assigned.
What I have noticed is the hub displays a solid blue light. I am able to ping the IP address of the hub, but that is about the extent of it.
There was no signs of issues before today and everything has been working well for months.
No changes were made to HE configuration recently.
The HE portal show last checkin time around 10pm last night and looking at my Grafana logs I can see a huge spike in response times at 2am from around 1s to 2+mins and it never came back down.
I don't see anywhere that you said you reached out to support with an email. Please be sure to do that. support@hubitat.com
Sorry as I posted this I also have sent an email to support.
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April do you remember how to access the Hub where you can "soft reset" the hub and some other things I don't remember?
Perhaps it might help here.
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youripaddress:8081
But it looks like that was also attempted with no luck
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Yeah this is what I meant by diagnostic menu, unfortunately also not accessible.
Have you tried 8080? And 8443?
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Yes I have tried both with no success. ,
Support replied saying its probably a bad Ethernet port so I will be purchasing a new hub to replace it. I really hope the USB stick is still working so I do not have to rejoin 130+ devices, including like 40 Z-wave devices.
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I know you probably know this already but don't forget an OTG cable for the new C5... (unless you can still get a C4).
Good luck!!
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Yeah thanks for reminding me, I am guessing it will be a C5.
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Also do you have an external backup? You might have to check with support if not.
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Also a weird thought... I wonder if you could plug in a usb nic on your C4 to at least gain some sort of access....
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Yes I have a weekly process that sends a backup to my Freenas server.
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@raidflex @erktrek
So if the ethernet port is bad (as indicated by support), why would local automation stop working?
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True, I am not totally convinced this is the issue either, considering I am also able to ping the device. I imagine support is guessing at this point since they cannot actually view the device. Either way I think it is a hardware issue, I think it could be a bad memory/flash chip.
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If you can ping it, it isn't the NIC - that's for sure. Look like the Hubitat process isn't starting up, although the underlying OS has booted.
Any recommendations on a particular brand OTG cable or should be fine with any?
Because you need an ethernet port? 
