Hubitat Hub Stuck on a blue light

[jmnewbury]

I have a C8 hub and it's stuck on a blue light right now. I've tried to do a network reset by holding down the light on the bottom, it goes green for a few seconds and back to blue. I'm not able to access the diagnostic tool either and I've checked my network for it under another IP. Any ideas on what to do?

FYI we had a power outage today that caused this. Online you can see the last time it communicated with the network was before the outage so it never came back after that.

[Ranchitat]

Sounds like you need to rebuild your database with a Soft Reset.

This thread may help:

C8 hub was accidentally powered down and now the LED stays blue

My switch is unmanaged, my router is Google Nest. So no set up in either on. arp -a could only find a few devices. Found a free network scanner to download Advanced IP Scanner - Download Free Network Scanner. That found all the devices and their MAC address. Found that the hub is now on 10.0.2.23. So I did a soft reboot and restored the db from my nightly backup. Not sure how the IP address changed. I should set it fixed at the current address. Thanks to both of you for helping me Need som…

[jmnewbury]

So Ive went through the list of devices comnected to my internet in the xfinity portal and the hub isnt connected anymore. Even through another IP adress. Any other ideas? I definitely dont want to have to start over with another hub. I have tons of devices connected to this one.

[WarlockWeary]

1. Turn the hub over and locate the recessed round button just beneath the surface of the case (pictured below).
   
2. Use the point of a paper clip (or other small, blunt object) to press and hold this button for at least 7 seconds.
3. When the LED on the front of the hub blinks, release the button. The hub will begin rebooting and turn blue after a few seconds. After a few minutes, the LED should return to green, at which point the hub has finished rebooting and should again be accessible.

Also .. you can power off the hub for 30-90 seconds and reboot it ?

[jmnewbury]

I tried the network reset. When I use the button on the back, it goes green for a few seconds, then flashes blue/green, then goes back to blue. I also have tried power cycling multiple times with no success.

[WarlockWeary]

A few thoughts. First, is your hub connected via Ethernet or Wi-Fi? Second, can you confirm the led is solid blue, and not flashing blue/red. And lastly, can you confirm that you are unable to reach the Diagnostic Tool on port 8081. Each of the 3 symptoms could lead to a different issue:

• solid blue means the platform is not running, but Diagnostic Tool should be accessible.
• flashing blue/red, means no network connection, but often seen when hub is trying to connect to Wi-Fi instead of Ethernet.
• Diagnostic Tool should be available even if the platform is not running, unless there is a local network issue.

[jmnewbury]

Hub connected via Wifi
The LED is solid blue
I'm unable to reach the diagnostic tool after multiple attempts using port 8081.

[WarlockWeary]

Can you try connecting it directly to the hub using a network cable?
And then maybe try doing the button thing on the bottom?

[WarlockWeary]

DHCP (wired) will hopefully assigned a new IP address.
locate the IP address of the Hubitat, which was named "IEEE ...."
then hopefully interface will show up.
then goto 8081 choice to do a Soft Reset

[danabw]

@WarlockWeary

And then maybe try doing the button thing on the bottom?

@jmnewbury - Definitely do this (network reset) after connecting your hub to your network via Ethernet cable.

Note (in case you're using the MAC address to identify devices on your router) that the hub's ethernet MAC address is printed on the bottom of the hub, and that the hub's ethernet and Wi-Fi connections have different MAC addresses.

[aaiyar]

@jmnewbury

Hub connected via Wifi

What at @WarlockWeary indicated is correct. The hub will not reconnect to WiFi after a network reset. You need to connect your hub by an ethernet cable to your router. Then reset it using the Diagnostic Tool.

Finally consider getting a cloud backup or hub protect subscription. It is designed to protect against catastrophic failure of a hub.

[Ranchitat]

All good advice, hopefully you have your database restored and you're back up.

Just to add, a mini UPS of some sort is cheap insurance you won't run into this again.

Something like this TalentCell.

And for lots of UPS/Battery Backup reading... have look at this THREAD.

[jmnewbury]

I'm back up and running! Thank you everyone. I was able to do a network reset with ethernet connection, then do a soft reset and restore the hub from a recent backup and everything works as normal. The hub did end up switching IP addresses. I have to say, I thought maybe it was a goner but sure enough you all came through with a solution.

[hydro311]

Set a DHCP reservation on your router for the hub's current IP -- that'll mitigate unexpected IP-switcharoo shenanigans down the road.