ZHA works with Sonoff ZBBridge hacked with Tasmota.
You can also make your own ser2net server (serial bridge server) with a ESP8266 or a Raspberry Pi
I second the master/slave idea. To be truly useful, it would have to be cross platform. Biggest challenge may be to redirect mqtt type devices.
+1 for sure.
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Or just run zigbee2mqtt on the remote pi. I’m using a Pi 1 for mine for the last month, as I needed to move the ZigBee controller closer to my sensors without moving the HA server.
Yes but what is your high availability solution for zigbee then?
I don’t have one. You also need redundancy for the MQTT broker.
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Yeah it is hard to have anything for redundant. With zigbee and z-wave there is (I think) a connection based on hardware key between your IOT device and the USB sick.
If you have 2 identical zigbee2mqtt sticks, one can take over from the other. Can’t have them both online at the same time though.
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+1 that would make life a lot easier. But I also understand getting there is not easy
I think that the hardware piece is going to be the most difficult. I agree with using a pi as a backup, because worse case I have it connected to a large battery and I can make decisions related to whether I shut down some, part, or none of my system.
There was a recent post from someone setting out their kubernetes based install.
EDIT: here K8s deployment
Not entirely true.
I run 2 proxmox servers. HA runs in a VM on my main server and the VM is backupped each hour onto the second node. I have also a third proxmox ‘node’ which is just a RPi which role is to confirm if one the main node is dead for proxmox management to able to swtch VM from the main node to the backup one.
I have 2 USB sticks on each server : one AeotecZ-Stick GEN5 fro ZWave and a Zigbee2MQTT controler.
The 2 AeotecZ-Stick GEN5 are identical (same firmware, backup one using the aeotec backup tooln and then import the backup on the second one).
The 2 Zigbee2MQTT sticks are also identicals.
When my main server goes down, HA starts in about one minute on the backup node (so there is a HA down-time of about one minute which is totally acceptable from my point of view). And both ZWave and Zigbee networks work just fine on the second physical node.
My 2 nodes are distant of about 10 meters one from the other.
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I’m a bit late to this thread, but my setup is similar to @Shaad.
I have my primary instance of HA running as a Hyper-V VM, with replication to another physical host.
Then I have 2 RPIs with aeotec z-sticks (not the same version or firmware FWIW - I initially bought the second stick so I could keep it up-to-date as a spare as my dependency on z-wave grew). The backup Pi is powered off, but can be powered on by the main HA instance if the primary Pi stops responding/fails (& rules to make sure only 1 of the 2 sockets is powered on at any one point), and I just take a backup of the z-stick, and a hassio snapshot periodically and load them onto the backup z-stick/pi.
home-assistant-remote is at the heart of it all: Everything on the pi shows up on the main HA instance, and because the Pis use the same IP & snapshot, the long lived token is the same. The result is that you can power one pi off, power the other on, and the main instance will happily go on talking to what it thinks is the same device.
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When this thread was originally live the posters then managed to avoid it getting either political or personal. It appears that has changed, so I’ve done a little cleanup.
Please keep it on topic 
Has anyone considered something like this: https://www.net-usb.com/
essentially usb over ethernet… a plugin for this would be great, but it looks quite pricey…
It may not be political but it is off topic. Keep it to the original subject. High Availability of Home Assistant.
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Is this topic still ongoing?
Is there allready a docker-swarm deployment possible with supervisor?
(I have no usb sticks, everything here is based on wifi, so I think that running HA in a docker swarm would be an acceptable solution for most people?)
Nobody picked up this what the heck request.
That doesn’t stop anybody doing it themselves. If you have no hardware restrictions it’s just failover.
hello, regarding HA IPs you can achieve this very easy with keepalived, you can search on Google is very easy to configure
Intermittent Tech is working on this. Quindor talks anout it briefly while reviewing this KVM for the project https://youtu.be/TzqfsiiJ5N8 So there should be a video about how to do it soonTM.
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