Connection failed: {:connection_refused, ~c"mosquitto", 1883}

[PoppyS33d]

This just started a couple of days ago, and I can't quite figure out why. This is Docker installed on a Mac mini M4 Pro. The error cycles every 10 seconds or so, so the logs are huge over the last few days.

Any ideas, anyone? Driving me insane...

2025-07-23 16:33:08.135 [info] Refreshed api tokens

2025-07-23 16:33:08.139 [info] Scheduling token refresh in 6 h

2025-07-23 16:33:08.143 [info] Running TeslaMateWeb.Endpoint with cowboy 2.13.0 at :::4000 (http)

2025-07-23 16:33:08.144 [info] Access TeslaMateWeb.Endpoint at http://localhost⁠

2025-07-23 16:33:08.245 [info] Starting logger for 'Pikachu'

2025-07-23 16:33:08.609 car_id=3 [info] Start / :offline

2025-07-23 16:33:09.030 [warning] [Tortoise311] Connection failed: {:connection_refused, ~c"mosquitto", 1883}, %{port: 1883, status: :down, protocol: "MQTT", host: ~c"mosquitto", protocol_version: 4, keep_alive: 60, transport: Tortoise311.Transport.Tcp, clean_session: true, client_id: "TESLAMATE_302E3937303", subscriptions: %Tortoise311.Package.Subscribe{META: %Tortoise311.Package.Meta{opcode: 8, flags: 2}, identifier: nil, topics: []}}. Retrying in 100 msecs.

2025-07-23 16:33:09.139 [warning] [Tortoise311] Connection failed: {:connection_refused, ~c"mosquitto", 1883}, %{port: 1883, status: :down, protocol: "MQTT", host: ~c"mosquitto", protocol_version: 4, keep_alive: 60, transport: Tortoise311.Transport.Tcp, clean_session: true, client_id: "TESLAMATE_302E3937303", subscriptions: %Tortoise311.Package.Subscribe{META: %Tortoise311.Package.Meta{opcode: 8, flags: 2}, identifier: nil, topics: []}}. Retrying in 200 msecs.

2025-07-23 16:33:09.345 [warning] [Tortoise311] Connection failed: {:connection_refused, ~c"mosquitto", 1883}, %{port: 1883, status: :down, protocol: "MQTT", host: ~c"mosquitto", protocol_version: 4, keep_alive: 60, transport: Tortoise311.Transport.Tcp, clean_session: true, client_id: "TESLAMATE_302E3937303", subscriptions: %Tortoise311.Package.Subscribe{META: %Tortoise311.Package.Meta{opcode: 8, flags: 2}, identifier: nil, topics: []}}. Retrying in 400 msecs.

2025-07-23 16:33:09.750 [warning] [Tortoise311] Connection failed: {:connection_refused, ~c"mosquitto", 1883}, %{port: 1883, status: :down, protocol: "MQTT", host: ~c"mosquitto", protocol_version: 4, keep_alive: 60, transport: Tortoise311.Transport.Tcp, clean_session: true, client_id: "TESLAMATE_302E3937303", subscriptions: %Tortoise311.Package.Subscribe{META: %Tortoise311.Package.Meta{opcode: 8, flags: 2}, identifier: nil, topics: []}}. Retrying in 800 msecs.

2025-07-23 16:33:10.558 [warning] [Tortoise311] Connection failed: {:connection_refused, ~c"mosquitto", 1883}, %{port: 1883, status: :down, protocol: "MQTT", host: ~c"mosquitto", protocol_version: 4, keep_alive: 60, transport: Tortoise311.Transport.Tcp, clean_session: true, client_id: "TESLAMATE_302E3937303", subscriptions: %Tortoise311.Package.Subscribe{META: %Tortoise311.Package.Meta{opcode: 8, flags: 2}, identifier: nil, topics: []}}. Retrying in 1600 msecs.

2025-07-23 16:33:12.164 [warning] [Tortoise311] Connection failed: {:connection_refused, ~c"mosquitto", 1883}, %{port: 1883, status: :down, protocol: "MQTT", host: ~c"mosquitto", protocol_version: 4, keep_alive: 60, transport: Tortoise311.Transport.Tcp, clean_session: true, client_id: "TESLAMATE_302E3937303", subscriptions: %Tortoise311.Package.Subscribe{META: %Tortoise311.Package.Meta{opcode: 8, flags: 2}, identifier: nil, topics: []}}. Retrying in 3200 msecs.

2025-07-23 16:33:15.372 [warning] [Tortoise311] Connection failed: {:connection_refused, ~c"mosquitto", 1883}, %{port: 1883, status: :down, protocol: "MQTT", host: ~c"mosquitto", protocol_version: 4, keep_alive: 60, transport: Tortoise311.Transport.Tcp, clean_session: true, client_id: "TESLAMATE_302E3937303", subscriptions: %Tortoise311.Package.Subscribe{META: %Tortoise311.Package.Meta{opcode: 8, flags: 2}, identifier: nil, topics: []}}. Retrying in 6400 msecs.

2025-07-23 16:33:17.749 [warning] [Tortoise311] Connection - timed out

2025-07-23 16:33:17.749 [error] GenServer TeslaMate.Mqtt.Publisher terminating

** (MatchError) no match of right hand side value: {:error, :timeout}

(teslamate 2.1.0) lib/teslamate/mqtt/publisher.ex:41: TeslaMate.Mqtt.Publisher.handle_call/3

(stdlib 5.2.3.4) gen_server.erl:1131: :gen_server.try_handle_call/4

(stdlib 5.2.3.4) gen_server.erl:1160: :gen_server.handle_msg/6

(stdlib 5.2.3.4) proc_lib.erl:241: :proc_lib.init_p_do_apply/3

Last message (from #PID<0.2732.0>): {:publish, "teslamate/cars/3/healthy", "", [retain: true, qos: 1]}

2025-07-23 16:33:17.775 [notice] Application teslamate exited: TeslaMate.Application.start(:normal, []) returned an error: shutdown: failed to start child: TeslaMate.Mqtt

** (EXIT) shutdown: failed to start child: TeslaMate.Mqtt.PubSub

    ** (EXIT) shutdown: failed to start child: TeslaMate.Mqtt.PubSub.VehicleSubscriber3

        ** (EXIT) exited in: GenServer.call(TeslaMate.Mqtt.Publisher, {:publish, "teslamate/cars/3/healthy", "", [retain: true, qos: 1]}, 10000)

            ** (EXIT) an exception was raised:

                ** (MatchError) no match of right hand side value: {:error, :timeout}

                    (teslamate 2.1.0) lib/teslamate/mqtt/publisher.ex:41: TeslaMate.Mqtt.Publisher.handle_call/3

                    (stdlib 5.2.3.4) gen_server.erl:1131: :gen_server.try_handle_call/4

                    (stdlib 5.2.3.4) gen_server.erl:1160: :gen_server.handle_msg/6

                    (stdlib 5.2.3.4) proc_lib.erl:241: :proc_lib.init_p_do_apply/3

Kernel pid terminated (application_controller) ("{application_start_failure,teslamate,{{shutdown,{failed_to_start_child,'Elixir.TeslaMate.Mqtt',{shutdown,{failed_to_start_child,'Elixir.TeslaMate.Mqtt.PubSub',{shutdown,{failed_to_start_child,'Elixir.TeslaMate.Mqtt.PubSub.VehicleSubscriber3',{{{badmatch,{error,timeout}},[{'Elixir.TeslaMate.Mqtt.Publisher',handle_call,3,[{file,"lib/teslamate/mqtt/publisher.ex"},{line,41}]},{gen_server,try_handle_call,4,[{file,"gen_server.erl"},{line,1131}]},{gen_server,handle_msg,6,[{file,"gen_server.erl"},{line,1160}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,241}]}]},{'Elixir.GenServer',call,['Elixir.TeslaMate.Mqtt.Publisher',{publish,<<"teslamate/cars/3/healthy">>,<

[brianmay]

I am not sure what you are trying to do here.

Do you have a mqtt server? Do you want a mqtt server?

[JakobLichterfeld]

If you followed https://docs.teslamate.org/docs/installation/docker/ you installed a MQTT server

[brianmay]

Where did you get your docker-compose.yml from?

[PoppyS33d]

Where did you get your docker-compose.yml from?

From the TeslaMate GitHub some years back.

[brianmay]

That probably would explain it then, the corresponding file in the docs has received a number of updates since then.

[PoppyS33d]

I just compared my docker-compose.yml to the current one in the instructions, and they are identical.