[SOLVED] OHv2 Help with MQTT v1 please

Setup, Configuration and Use Installation
1

I have migrated from OHv1 to v2… now it comes to MQTT

I’d like to use v1 of the MQTT binding, because it means I would not have to change any of the items.

My addon.cfg has these entries:

binding = expire1,fritzboxtr0641,http1,mqtt1,networkhealth1,weather1,astro,exec,ntp,systeminfo
# removed mqtt action based on https://community.openhab.org/t/solved-mqtt-binding-stopped-working-after-todays-snapshot-update/19447/13
#action = mail,mqtt
action = mail

When I had the mqtt action enabled, I got an error:

2018-12-28 10:57:29.095 [INFO ] [t.mqtt.internal.MqttBrokerConnection] - Starting MQTT broker connection 'mymosquitto'
2018-12-28 10:57:29.195 [ERROR] [penhab.io.transport.mqtt.MqttService] - Error starting broker connection
org.eclipse.paho.client.mqttv3.MqttException: MqttException
        at org.eclipse.paho.client.mqttv3.internal.ExceptionHelper.createMqttException(ExceptionHelper.java:38) ~[?:?]
        at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:664) ~[?:?]
        at java.lang.Thread.run(Thread.java:748) [?:?]
Caused by: java.net.UnknownHostException: 192.1681.66
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184) ~[?:?]
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[?:?]
        at java.net.Socket.connect(Socket.java:589) ~[?:?]
        at org.eclipse.paho.client.mqttv3.internal.TCPNetworkModule.start(TCPNetworkModule.java:70) ~[?:?]
        at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:650) ~[?:?]
        ... 1 more
2018-12-28 10:57:29.230 [ERROR] [org.apache.felix.configadmin        ] - Cannot use configuration org.openhab.mqtt for [org.openhab.core.scriptengine.action.ActionService, org.osgi.service.cm.ManagedService, id=390, bundle=222/mvn:org.openhab.action/org.openhab.action.mqtt/1.13.0]: No visibility to configuration bound to mvn:org.openhab.io/org.openhab.io.transport.mqtt/1.13.0

The mqtt.cfg looks like this:

# 181228-0940 MaxG added as per https://community.openhab.org/t/need-help-to-setup-mqtt-binding-on-oh2/45677/5
pid:org.openhab.mqtt
# results in error

mymosquitto.url=tcp://192.168.1.66:1883
mymosquitto.clientId=openhab

What puzzles me is, where do I tell openHAB that the clientID is ‘openhab’?

mosquitto is working, as I can see data coming with:

mosquitto_sub -v -t ArgyleCourt/#
ArgyleCourt/Shed/Tower/BMS/BatteryCapacity 20.0
ArgyleCourt/Shed/Tower/BMS/BatteryPower -11.0
ArgyleCourt/Shed/Tower/BMS/BatteryTemperature 30.437
ArgyleCourt/Shed/GroundFloor/LivingRoom/AmbientLight/Lux 18.07
ArgyleCourt/Shed/GroundFloor/LivingRoom/AmbientLight/Visible 3270
ArgyleCourt/Shed/GroundFloor/LivingRoom/AmbientLight/IR 1780
ArgyleCourt/House/TriSensor/South/Barometer1 995.58
ArgyleCourt/House/TriSensor/South/Humidity1 50.05
ArgyleCourt/House/TriSensor/South/Temperature1 26.55

Any hints appreciated…

2

Well, my mistake… did not change the IP address in mqtt.cfg :frowning:
Also, the mqtt action entry is required for mqtt v1 to work; it is needed to 'publish".

However, seeing this:

2018-12-28 11:34:50.161 [WARN ] [g.dispatch.internal.ConfigDispatcher] - The file /etc/openhab2/services/mqtt.cfg subsequently defines the exclusive PID 'org.openhab.mqtt'. Overriding existing configuration now.

Is this pid entry in mqtt.cfg required or not?

3

It is required exactly once in the file. Actually it is not really required but a feature and good habit. If you remove the file, the config manager will remove all entries from the cache for you.