Need help to setup MQTT Binding on OH2

[Dim (Angelos)]

Use Code Fences
fix your mqtt.cfg

broker.url=tcp://192.XX.XX.XX:1883
not
‘broker.url=tcp://192.XX.XX.XX:1883’

add the following line in mqtt.cfg

pid:org.openhab.mqtt

[sihui]

@rajeev2301

but not sure why it is not reflecting in Configuration-> Bindings screen.

1.x bindings don’t show up there, just 2.x bindings.

Start reading this thread:

MQTT Binding (v1.11) Getting Started 101

After countless threads regarding initial configuration issues, here is a short guide on how to get started with MQTT, the MQTT binding and openHAB. This thread is a wiki article and can be improved by everyone. Please do! MQTT is a machine-to-machine (M2M)/“Internet of Things” connectivity protocol. It was designed as an extremely lightweight publish/subscribe messaging transport. A few resources first: Read all you ever need to know about MQTT in the MQTT Essentials The openHAB MQT…

[rajeev2301 (Rajeev)]

I am still not able to bind the MQTT to Addons. Please find the Openhab (var/log/openhab2/openhab.log) and Mosquitto log file below.

Appreciate your help.

2018-05-30 23:41:11.387 [INFO ] [thome.model.lsp.internal.ModelServer] - Started Language Server Protocol (LSP) se$
2018-05-30 23:41:12.597 [INFO ] [el.core.internal.ModelRepositoryImpl] - Loading model ‘MyHome.things’
2018-05-30 23:41:14.801 [INFO ] [basic.internal.servlet.WebAppServlet] - Started Basic UI at /basicui/app
2018-05-30 23:41:14.933 [INFO ] [arthome.ui.paper.internal.PaperUIApp] - Started Paper UI at /paperui
2018-05-30 23:41:15.074 [INFO ] [panel.internal.HABPanelDashboardTile] - Started HABPanel at /habpanel
2018-05-30 23:41:15.386 [INFO ] [penhab.io.transport.mqtt.MqttService] - MQTT Service initialization completed.
2018-05-30 23:41:15.405 [INFO ] [t.mqtt.internal.MqttBrokerConnection] - Starting MQTT broker connection ‘’
2018-05-30 23:41:15.705 [ERROR] [penhab.io.transport.mqtt.MqttService] - Error starting broker connection
org.eclipse.paho.client.mqttv3.MqttException: Unable to connect to server
at org.eclipse.paho.client.mqttv3.internal.TCPNetworkModule.start(TCPNetworkModule.java:79) [219:org.openh$
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:650) [219:org.openha$
at java.lang.Thread.run(Thread.java:745) [?:?]
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method) ~[?:?]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[?:?]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[?:?]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[?:?]
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) ~[?:?]
… 2 more
2018-05-30 23:41:15.767 [INFO ] [t.mqtt.internal.MqttBrokerConnection] - Starting MQTT broker connection ‘broker’
2018-05-30 23:41:15.802 [ERROR] [penhab.io.transport.mqtt.MqttService] - Error starting broker connection
org.eclipse.paho.client.mqttv3.MqttException: Unable to connect to server
at org.eclipse.paho.client.mqttv3.internal.TCPNetworkModule.start(TCPNetworkModule.java:79) [219:org.openh$
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:650) [219:org.openha$
at java.lang.Thread.run(Thread.java:745) [?:?]
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method) ~[?:?]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[?:?]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[?:?]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[?:?]

here is Mosquitto log file
1527339623: Config loaded from /etc/mosquitto/mosquitto.conf.
1527339623: Opening ipv4 listen socket on port 1883.
1527339623: Opening ipv6 listen socket on port 1883.
1527339623: Opening ipv4 listen socket on port 1883.
1527339623: Error: Address already in use

[vzorglub (Vincent Regaud)]

Can you post your mosquitto.conf, please

[rajeev2301 (Rajeev)]

Here is Mosquitto.conf

listener 1883 192.168.XX.XX (Just masked the last two block of IP for obvious reason)
pid_file /var/run/mosquitto.pid

#persistence true
persistence_location /var/lib/mosquitto/
#persistence_file mosquitto.db

log_dest file /var/log/mosquitto/mosquitto.log
#log_dest syslog
#log_dest stdout
#log_dest topic
#log_type error
#log_type warning
#log_type notice
log_type information
connection_message true
log_timestamp true

allow_anonymous false
password_file /etc/mosquitto/pwfile
#listener 1883

#include_dir /etc/mosquitto/conf.d

[Dim (Angelos)]

here are your working files:

mosquitto.conf

persistence false
log_dest file /var/log/mosquitto/mosquitto.log
log_type information
connection_message true
log_timestamp true
allow_anonymous false
password_file /etc/mosquitto/pwfile

mqtt.cfg

pid:org.openhab.mqtt
broker.url=tcp://192.XX.XX.XX:1883
broker.clientId=openhab2
broker.user=XXXX
broker.pwd=XXXX

Code Fences: Use them

[vzorglub (Vincent Regaud)]

@Dim

add port 1883 to the mosquitto.conf

port 1883
persistence false
log_dest file /var/log/mosquitto/mosquitto.log
log_type information
connection_message true
log_timestamp true
allow_anonymous false
password_file /etc/mosquitto/pwfile

[rajeev2301 (Rajeev)]

Thanks !

As you suggested I made the changes to mosquitto.conf and mqtt.cfg file however I am still not able to see MQTT binding under configuration.

Here are the log files.

Openhab.log

2018-05-31 20:53:03.152 [INFO ] [t.mqtt.internal.MqttBrokerConnection] - Starting MQTT broker connection ‘’
2018-05-31 20:53:13.476 [ERROR] [t.mqtt.internal.MqttBrokerConnection] - MQTT connection to broker was lost
org.eclipse.paho.client.mqttv3.MqttException: Connection lost
at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:146) [223:org.openhab.io.transport.mqtt:1.12.0.RC2]
at java.lang.Thread.run(Thread.java:745) [?:?]
Caused by: java.io.EOFException
at java.io.DataInputStream.readByte(DataInputStream.java:267) ~[?:?]
at org.eclipse.paho.client.mqttv3.internal.wire.MqttInputStream.readMqttWireMessage(MqttInputStream.java:65) ~[?:?]
at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:107) ~[?:?]
… 1 more
2018-05-31 20:53:13.500 [ERROR] [t.mqtt.internal.MqttBrokerConnection] - MQTT connection to ‘’ was lost: Connection lost : ReasonCode 32109 : Cause : null
2018-05-31 20:53:13.502 [INFO ] [t.mqtt.internal.MqttBrokerConnection] - Starting connection helper to periodically try restore connection to broker ‘’

Mosquitto.log
527339623: mosquitto version 1.5 starting
1527339623: Config loaded from /etc/mosquitto/mosquitto.conf.
1527339623: Opening ipv4 listen socket on port 1883.
1527339623: Opening ipv6 listen socket on port 1883.
1527339623: Opening ipv4 listen socket on port 1883.
1527339623: Error: Address already in use

---

Moreover , I am getting a peculiar socket error when I run pi@raspberry:~$mosquitto .Not sure if it is related to the actual issue.

1527825741: New connection from 192.XXX.X.XX on port 1883.
1527825741: Client openhab2 already connected, closing old connection.
1527825741: Socket error on client openhab2, disconnecting.
1527825741: New client connected from 192.XXX.X.XX as openhab2 (c1, k60, u’username’).

[Dim (Angelos)]

@rajeev2301

As you suggested I made the changes to mosquitto.conf and mqtt.cfg file

I doubt that you fixed your mqtt.cfg… post it here

[rajeev2301 (Rajeev)]

Thanks Dim for your quick response. Yes I did fixed the
sudo nano /etc/openhab2/services/mqtt.cfg

pid:org.openhab.mqtt
broker.url=tcp://192.168.XX.XX:1883
broker.clientId=openhab2
broker.user=username
broker.pwd=HomeHub

Note :Removed bracket before and after broker

[Dim (Angelos)]

make sure that pid:org.openhab.mqtt is the first line within mqtt.cfg

You should see in the log a relevant entry

[rajeev2301 (Rajeev)]

Yes , pid:org.openhab.mqtt is the first line within mqtt.cfg.

BTW, I just found these two below observation . Do you think it is causing the problem? looks like there are two instances running…

openhab cosole

openhab> config:property-list
.async = false
.ClientId = openhab2
.pwd = HomeHub
.qos = 1
.retain = true
.url = tcp://192.XX.XX.XX:1883
.user = username
broker.clientId = openhab2
broker.pwd = HomeHub
broker.url = tcp://192.168.XX.XX:1883
broker.user = username
service.pid = org.openhab.mqtt

** pi@raspeberry console**
pi@raspberrypi:~ $ dpkg -l | grep openhab
ii openhab2 2.3.0~RC2-1 all openhab2
ll openhab2

[Dim (Angelos)]

yes, this is the problem (you have a old wrong broker config stored)

the pid: line should remove this and reload the config. I don’t understand why it’s not working for you… it should

anyway, follow these steps:

1. stop OH2
2. delete file /var/lib/openhab2/config/org/openhab/mqtt.config
3. start OH2

[rajeev2301 (Rajeev)]

I follow the above 3 steps

After step 3 when I went back to /var/lib/openhab2/config/org/openhab/mqtt.config
but it is still showing me
.clientId=“openhab2”
.pwd=“HomeHub”
.url=“tcp://192.168.X.XX:1883”
.user=“username”
service.pid=“org.openhab.mqtt”

however , /etc/openhab2/services/mqtt.cfg has different sequence of line…
pid:org.openhab.mqtt
.url=tcp://192.168.XX.XX:1883
.clientId=openhab2
.user=username
.pwd=HomeHub

do you think /var/lib/openhab2/config/org/openhab/mqtt.config is pulling the configuration from old instance? If yes how to delete it…? Is there anything we can do from Openhab console to delete the old configuration…

[Dim (Angelos)]

check folder /etc/openhab2/services/ for extra cfg files which contain mqtt configs…
make sure that you are using the correct file… maybe that’s why the pid: line didn’t work…
Use Code fences… I am not sure that you are posting correctly the file contents (and by the way: your IP is RFC1918 so nothing to worry about :))

[rajeev2301 (Rajeev)]

the only configuration file in /etc/openhab2/services/ folder are

1. addons,cfg
2. mqtt.cfg
3. mqtt-eventbus.cfg

BTW, just to clarify : there are only two places where I have mqtt.cfg file.

1. /var/lib/openhab2/config/org/openhab/mqtt.cfg
2. /opt/openhab2/conf/services/mqtt.cfg
   and both the file has same content

pid:org.openhab.mqtt
broker.url=tcp://192.XX.X.XX:1883
broker.clientId=openhab2
broker.user=username
broker.pwd=HomeHub

note : bracket before and after broker

[Dim (Angelos)]

so you should be ok now
try restarting OH2 and check the logs

[Dim (Angelos)]

@rajeev2301

note : bracket before and after broker

grrrr… what do you mean bracket?

Use Code Fences !!! (for the 5th time :))

How to use code fences

We all have to type this content over and over and over. Here is a posting we can all point to when the topic comes up. Why use code fences? Because rules, sitemap, logs, and configs are all but unreadable when code fences are not used. When to use code fences? Whenever one is posting any sort of code, config, log, and any text where line wrapping, indentation, and using an equal spaced font makes the text more legible. How to use code fences? Use 3 backticks (```)... Or use <code>... …

How to use code fences

We all have to type this content over and over and over. Here is a posting we can all point to when the topic comes up. Why use code fences? Because rules, sitemap, logs, and configs are all but unreadable when code fences are not used. When to use code fences? Whenever one is posting any sort of code, config, log, and any text where line wrapping, indentation, and using an equal spaced font makes the text more legible. How to use code fences? Use 3 backticks (```)... Or use <code>... …

How to use code fences

We all have to type this content over and over and over. Here is a posting we can all point to when the topic comes up. Why use code fences? Because rules, sitemap, logs, and configs are all but unreadable when code fences are not used. When to use code fences? Whenever one is posting any sort of code, config, log, and any text where line wrapping, indentation, and using an equal spaced font makes the text more legible. How to use code fences? Use 3 backticks (```)... Or use <code>... …

How to use code fences

We all have to type this content over and over and over. Here is a posting we can all point to when the topic comes up. Why use code fences? Because rules, sitemap, logs, and configs are all but unreadable when code fences are not used. When to use code fences? Whenever one is posting any sort of code, config, log, and any text where line wrapping, indentation, and using an equal spaced font makes the text more legible. How to use code fences? Use 3 backticks (```)... Or use <code>... …

How to use code fences

We all have to type this content over and over and over. Here is a posting we can all point to when the topic comes up. Why use code fences? Because rules, sitemap, logs, and configs are all but unreadable when code fences are not used. When to use code fences? Whenever one is posting any sort of code, config, log, and any text where line wrapping, indentation, and using an equal spaced font makes the text more legible. How to use code fences? Use 3 backticks (```)... Or use <code>... …

[vzorglub (Vincent Regaud)]

@rajeev2301

Please use the code fences. Thanks

Do the following, in order:

1. uninstall the mqtt broker
2. delere your mqtt.cfg from the conf/services folder
3. clear the cache
4. stop openhab (DON’T reboot)
5. reboot your mqtt broker and wait 2 minutes
6. reboot OH computer
7. install the mqtt binding
8. fill in the mqtt.cfg file with you broker details:

pid:org.openhab.mqtt
broker.url=tcp://192.XX.X.XX:1883
broker.clientId=openhab2
broker.user=username
broker.pwd=HomeHub

That’s all there should be. NOTHING else
make sure that pid:org.openhab.mqtt is the VERY FIRST LINE OF THE FILE

9. stop openhab
10. start openhab
11. show us the logs at start up

[rajeev2301 (Rajeev)]

Thanks Vincent for extending your help! also Thanks @Dim your patience -( I am new to this environment )

@vzorglub
Before I goahead with your suggestion of reinstalling mqtt broker, please help me clarify few doubts

1. Why the order/sequence of line ( in mqtt.cfg file) is different in mqtt.cfg file and the output which is getting from openhab console. ( plz ref below)

/etc/openhab2/services/mqtt.cfg file 
service.pid=org.openhab.mqtt
<broker>.url=tcp://192.XX.XX.XX:1883
<broker>.clientId=openhab2
<broker>.user=username
<broker>.pwd=HomeHub

openhab > config:edit org.openhab.mqtt
openhab> config:property-list

   <broker>.clientId = openhab2
   <broker>.pwd = HomeHub
   <broker>.url = tcp://192.XXX.X.XX:1883
   <broker>.user = username
   service.pid = org.openhab.mqtt

also, plz ref below the openhab log file , it says - Error starting broker connection. is that the reason why you want me to reinstall mqtt broker? if yes , please let me know do i need to uninstall & install both mosquitto and mosquitto-clients or only mosquitto ?? (BTW i use this source to download mqtt package : http://repo.mosquitto.org/debian/mosquitto-stretch.list) ?

2018-06-01 00:18:42.709 [INFO ] [t.mqtt.internal.MqttBrokerConnection] - Starting MQTT broker connection '<broker>'
2018-06-01 00:18:43.010 [ERROR] [penhab.io.transport.mqtt.MqttService] - Error starting broker connection
org.eclipse.paho.client.mqttv3.MqttException: Unable to connect to server
        at org.eclipse.paho.client.mqttv3.internal.TCPNetworkModule.start(TCPNetworkModule.java:79) [223:org.openhab.i$
        at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:650) [223:org.openhab.io$
        at java.lang.Thread.run(Thread.java:745) [?:?]
Caused by: java.net.ConnectException: Connection refused
        at java.net.PlainSocketImpl.socketConnect(Native Method) ~[?:?]
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[?:?]
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[?:?]
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[?:?]
        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) ~[?:?]

2. Sencondly , when I run

pi@raspberrypi:~ $ dpkg -l | grep openhab 

ii  openhab2                              2.3.0~RC2-1                          all          openhab2
ll          openhab2

it looks like there are two instances of openhab2. ( is my understanding correct??) if yes, do I need to uninstall openhab as well and do a fresh installation.??

Appreciate your help!