Frontend won't start without MQTT

[danielvandenberg95]

What happened?

@parshivets I believe the issue is that startup is blocked because it cannot to the MQTT server, please check your MQTT settings, you should see Connected to MQTT server in your logs

I'm currently in a bit of a situation where this is actually a slight issue.
Due to some remodeling work, power to my MQTT server is turned off.
I want to replace the wall plug to my server with a different one.
I can reach my Pi running zigbee2mqtt. However, I can not pair my new plug, because the interface won't start, because the MQTT server is down.

So, I vote for starting the frontend before connecting to MQTT.

Originally posted by @danielvandenberg95 in #4266 (comment)

What did you expect to happen?

Frontend to start up

How to reproduce it (minimal and precise)

Bring down MQTT
Start zigbee2mqtt

Zigbee2MQTT version

Ha ha very funny. "Can be found in the frontend -> settings -> about -> Zigbee2MQTT version"

Adapter firmware version

3.2.6.0

Adapter

CCsomething, but not related.

Debug log

Zigbee2MQTT:info 2022-02-09 12:34:50: Starting Zigbee2MQTT version 1.23.0-dev (commit #7fe803a)

Zigbee2MQTT:info 2022-02-09 12:34:50: Starting zigbee-herdsman (0.14.13)

Zigbee2MQTT:info 2022-02-09 12:34:51: Coordinator firmware version: '{"meta":{"maintrel":3,"majorrel":2,"minorrel":6,"product":0,"revision":20201127,"transportrev":2},"type":"zStack12"}'

[Koenkk]

Due to the internal architecture, the frontend/z2m isn't able to function without being connected to an MQTT server. I therefore consider this a feature request to allow Z2M to start without being connected to a MQTT server. (people that are interested please 👍 the OP)

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days

[danielvandenberg95]

Remove stale

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days

[schmurtzm]

Hi, I recently tested the last version of zigbee2mqtt (I had an experience with the first early versions) , it was awesome to see that there's now a web interface but the most awesome feature that I see is the possibility to create user extensions : with these javascript script, MQTT server is really optional : I just want to trigger an http API of my own but it still require a mqtt server which is totally useless in my case.
So I think that this issue should be opened again to serve the user extensions feature which are a real alternative to the MQTT server.