Unable to disable MQTT using MQTT_HOST: false

[cmgenius]

Using the HA addon, I am attempting to disable MQTT functionality. Setting MQTT_HOST to false as instructed in the documentation results in an error as pictured below. Is this a bug or am I doing something incorrectly?

[mrlt8]

I believe it might need to be a string:

MQTT_HOST: "false"

However, since we're pulling the mqtt setting from Home Assistant, it might still get ignored.

Will have to look into this.

[mrlt8]

@cmgenius you should be able to disable MQTT by setting MQTT_DTOPIC to something other than homeassistant in the latest update.

[jhansche]

Minor clarification here: that doesn't disable mqtt, right? That just changes the discovery topic, to something that HA isn't listening to? And looking at the commit, it also now disables the auto discovery of the mqtt add-on host.

In other words, if you had previously changed your HA discovery topic to something other than the default, it also wouldn't auto-discover, unless you set the bridge dtopic to match? But now doing so means it also wouldn't auto discover the host, so you'll have to manually configure that as well?

I guess my point is that it seems to be catering to a default case, and for someone who has changed their HA discovery topic, it means they also have to configure the host explicitly as well. I think it would just be more clear to have an explicit setting for these

• MQTT: on/off
• MQTT Discovery topic: default homeassistant, but can be customized
• MQTT endpoint: host/port, can auto detect HA if running as an add-on

This way you don't have to assign double-meaning to either the host (disable) or the dtopic (homeassistant)

[mrlt8]

hmm, I personally don't use HA so I wasn't aware that the discovery topic was configurable.

Will have to look into it again.

I really wish HA was more like Homebridge as the current config is getting extremely large!