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"Hey, sorry I haven't updated in a while. Life's been crazy, but I'll be back soon."

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I installed Home Assistant with Dokku. It was very easy, but there were a couple of gotchas that slowed it down a bit.


Create a new homeassistant app in Dokku

dokku apps:create homeassistant

Set the timezone

dokku config:set homeassistant TZ=America/Chicago

Create a folder that will be used for Home Assistant configuration

mkdir /path/to/my-config
dokku storage:mount homeassistant /path/to/my-config:/config

Home Assistant uses its own init procedure, and we need to disable automatic init

dokku scheduler-docker-local:set homeassistant init-process false

Initialize Home Assistant app from its docker image

dokku git:from-image homeassistant

Dokku didn’t correctly configure the correct port for the container, so:

Remove the default proxy port if needed:

dokku proxy:ports-remove homeassistant http:80:5000

Add the correct proxy port:

dokku proxy:ports-add homeassistant http:80:8123

To enable autodiscovery, Home Assistant needs to be connected to the host network. Other than autodiscovery, I had no issues using the default network and normal port mapping.

You can enable this option in dokku with

dokku docker-options:add homeassistant deploy,run "--network=host"

Once Home Assistant is on the host network, dokku’s zero-downtime restarts will fail when updating or restarting the service, because the bound port will already be in use.

Zero downtime restarting can be disabled with

dokku checks:disable homeassistant

Updating Home Assistant

To update Home Assistant, use git:from-image again, pointing to the newest SHA digest for your architecture (instead of using the :stable tag)

dokku git:from-image homeassistant<shadigest>

You can get this digest from docker hub for your architecture: docker hub, or you can pull the image locally and use:

docker inspect --format='{{index .RepoDigests 0}}'

My favorite automations (so far) turn my printer’s light off automatically after a print completes, and lets me know to open windows when the weather is cooler and less humid outside, and air quality is ok.