MQTT config under OH2

[Dim (Angelos)]

@sihui

Great stuff, have not found that yet. Do you have any link available where we can find that? Thx.

Hi @sihui,

I found this kind of info from reading various posts here in the community and mainly from this great thread:

Recommended way to backup/restore OH2 configurations and things?

Would it be possible to backup the userdata folder as a whole and overwrite the userdata folder that comes with the distribution? Well, in general a full backup comprises the conf and the userdata folder, that’s the idea. Note that the distribution does not come with any userdata folder at all, so this does not get overwritten either. That is, if a thing is setup in a textual file, it should be taken as it is defined and Paper UI should not discover a new copy of this thing. But should it…

I also read a bit the Apache Karaf Shell wiki here: Apache Karaf Container 4.x - Documentation

but mostly… trial and error

BR,
Dim
Ps: @jflarente: That’s a big discussion… check out the thread referenced above. I believe that the short answer is no because this is by design.

[sihui]

@Dim

but mostly… trial and error

Thx a lot.

[rlkoshak (Rich Koshak)]

@Dim, would you be willing to write this posting up as a quick tutorial as a top level thread under Tutorials and Examples? I think this really important and not well known and it actually answers a lot of questions I had. Eventually I can see this migrating to the official docs.

[Dim (Angelos)]

@rlkoshak

@Dim, would you be willing to write this posting up as a quick tutorial

Absolutely. I will give it a try and write some examples on how to “manage” configurations that are already stored within the OpenHab 2 OSGi cache. I am not an expert in Apache Karaf, so I will need help to “iron-out” any errors

BR,
Dim

[rlkoshak (Rich Koshak)]

If you see any of my or Thom’s tutorials you will see we all get lots of help on such postings. I look forward to reading it.

[Dim (Angelos)]

@rlkoshak

I look forward to reading it.

@rlkoshak: First (alpha) version posted on:

HowTo: Manage OpenHab 2 configurations

1. Intro This tutorial is based on an apt-get installation of OH2 in Linux and is for advanced/manual configuration of OpenHab 2 and for troubleshooting purposes. The normal way of working with OpenHab 2 configurations is via the Paper UI and the config files in /etc/openhab2. 2. Basics OpenHab 2 is based on the Eclipse SmartHome framework and is fully written in Java. It uses the Apache Karaf (a lightweight and modular container, powered by OSGi) to store many information, including all t…

[Drpepper (Phillip Udel)]

Please Help, I spent the day trying to debug.
I have run out of ides…

The best I can tell when I press the switch It triggers a event
2017-01-20 17:00:24.129 [INFO ] [t.mqtt.internal.MqttBrokerConnection] - Starting MQTT broker connection ''
2017-01-20 17:02:56.931 [DEBUG] [inding.mqtt.internal.MqttItemBinding] - Publishing command ON to control/SW010101/command
But the broker does not see any <> messages from OH2:
1484950320: Sending CONNACK to paho-263225371366065 (0, 0)
1484950321: Received PUBLISH from paho-263225371366065 (d0, q0, r0, m0, ‘control/SW010101/command’, … (2 bytes))
1484950322: Received PUBLISH from WallSwitch001 (d0, q0, r0, m0, ‘control/SW010101/SW1/state’, … (1 bytes))
1484950330: Received PINGREQ from Openhab2
1484950330: Sending PINGRESP to Openhab2

the broker does see Openhab:
1484950210: Sending CONNACK to Openhab2 (0, 0)
1484950217: Received PINGREQ from WallSwitch001

[WayneStronach]

Can you show us the contents of your mqtt.cfg file and also the items which are not working?

[Drpepper (Phillip Udel)]

they don’t display well, had to replace the brackets with ‘
‘mqttbroker’.url=tcp://10.1.0.22:1869’
‘mqttbroker’.clientId=Openhab2
’mqttbroker’.user=xxxxxxxxx
’mqttbroker’.pwd=xxxxxxxxxxxx

[WayneStronach]

for mine (delete any commented out lines in txt editor (e.g. notepad or notepad++)

most important line in mqtt.cfg is
OH2MQTT.url=tcp://192.168.1.10:1883

my items look like:

Switch DO_70_4 “Ensuite Fan - manual override [%s]” (Ensuite,Node70,log) {mqtt=">[OH2MQTT:home/rfm_gw/sb/node70/dev19:command:ON:ON],>[OH2MQTT:home/rfm_gw/sb/node70/dev19:command:OFF:OFF]",autoupdate=“true”}
Number Tem_7048 “Roof space 7048 [%.1f °C]” (Roof, HouseData, Node70, All_Temperature,log,temp_chart) {mqtt="<[OH2MQTT:home/rfm_gw/nb/node70/dev48:state:default]"}
Number Tem_7050 “Bathroom temperature 7050 [%.1f °C]” (HouseData, Bathroom, Node70, All_Temperature,log,temp_chart) {mqtt="<[OH2MQTT:home/rfm_gw/nb/node70/dev50:state:default]"}

[WayneStronach]

type removing quote marks from broker name - see mine above

[Drpepper (Phillip Udel)]

ok, give me 5.

[watou (John Cocula)]

Note that changing existing keys in mqtt.cfg will need attention as well under /var/lib/openhab2/config to work around issue.

[Drpepper (Phillip Udel)]

getting these errors now
17-01-20 18:15:41.872 [ERROR] [t.mqtt.internal.MqttBrokerConnection] - MQTT connection to ‘’ was lost: Connection lost : ReasonCode 32109 : Cause : null

[Drpepper (Phillip Udel)]

broker is up and running. just checked

More of the log. the good news this is the most I have ever seen in the log

Connection lost (32109) - java.io.EOFException
at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:146)[186:org.eclipse.paho.client.mqttv3:1.0.2]
at java.lang.Thread.run(Thread.java:745)[:1.8.0_111]
Caused by: java.io.EOFException
at java.io.DataInputStream.readByte(DataInputStream.java:267)[:1.8.0_111]
at org.eclipse.paho.client.mqttv3.internal.wire.MqttInputStream.readMqttWireMessage(MqttInputStream.java:65)[186:org.eclipse.paho.client.mqttv3:1.0.2]
at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:107)[186:org.eclipse.paho.client.mqttv3:1.0.2]
… 1 more
2017-01-20 18:20:52.438 [ERROR] [t.mqtt.internal.MqttBrokerConnection] - MQTT connection to ‘mqttbroker’ was lost: Connection lost : ReasonCode 32109 : Cause : null
2017-01-20 18:20:52.439 [INFO ] [t.mqtt.internal.MqttBrokerConnection] - Starting connection helper to periodically try restore connection to broker 'mqttbroker’
2017-01-20 18:21:02.439 [INFO ] [t.mqtt.internal.MqttBrokerConnection] - Starting MQTT broker connection 'mqttbroker’
2017-01-20 18:21:02.447 [ERROR] [t.mqtt.internal.MqttBrokerConnection] - MQTT connection to broker was lost
Connection lost (32109) - java.io.EOFException
at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:146)[186:org.eclipse.paho.client.mqttv3:1.0.2]
at java.lang.Thread.run(Thread.java:745)[:1.8.0_111]
Caused by: java.io.EOFException
at java.io.DataInputStream.readByte(DataInputStream.java:267)[:1.8.0_111]
at org.eclipse.paho.client.mqttv3.internal.wire.MqttInputStream.readMqttWireMessage(MqttInputStream.java:65)[186:org.eclipse.paho.client.mqttv3:1.0.2]
at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:107)[186:org.eclipse.paho.client.mqttv3:1.0.2]
… 1 more
2017-01-20 18:21:02.447 [ERROR] [t.mqtt.internal.MqttBrokerConnection] - MQTT connection to ‘’ was lost: Connection lost : ReasonCode 32109 : Cause : null
2017-01-20 18:21:02.448 [INFO ] [t.mqtt.internal.MqttBrokerConnection] - Starting connection helper to periodically try restore connection to broker ''
2017-01-20 18:21:02.451 [DEBUG] [t.mqtt.internal.MqttBrokerConnection] - Starting message consumer for broker ‘mqttbroker’ on topic 'control/SW010101/SW2/state’
2017-01-20 18:21:02.453 [DEBUG] [t.mqtt.internal.MqttBrokerConnection] - Starting message consumer for broker ‘mqttbroker’ on topic 'control/SW010101/SW2/state’
2017-01-20 18:21:02.454 [DEBUG] [t.mqtt.internal.MqttBrokerConnection] - Starting message consumer for broker ‘mqttbroker’ on topic 'control/SW010101/SW3/state’
2017-01-20 18:21:02.455 [DEBUG] [t.mqtt.internal.MqttBrokerConnection] - Starting message consumer for broker ‘mqttbroker’ on topic ‘control/SW010101/SW3/state’
^C

[Dim (Angelos)]

@Drpepper

getting these errors now

delete file: /var/lib/openhab2/config/org/openhab/mqtt.config and let openHAB 2 reload your /etc/openhab2/services/mqtt.cfg

[Drpepper (Phillip Udel)]

Woooot… your the man
up and running. I owe you big time.
Where do you live?
I owe you a coffee

[Dim (Angelos)]

I think that @WayneStronach helped you much more by assisting you in fixing your mqtt.cfg file
I just put the finishing touch with 1 small error

[Drpepper (Phillip Udel)]

true, so I owe you both LOL

[internetcontact (Raj)]

This thread helped me a lot. I was also stuck with two different mqtt config files and finally I solved it.
Thanks a lot guys and keep up the good work.