Mosquitto MQTT broker v2.0.0

[FireWizard]

This information might be important for everyone who uses the Mosquitto MQTT broker in combination with Domoticz.

Eclipse has released a new Mosquitto MQTT Broker, version 2.0. See: https://mosquitto.org/

Currently version 2.0.8 is available and it may soon reach or have already reached the various repositories.
Users may install this version coincidentally, while doing an upgrade, e.g.:

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sudo apt upgrade

The new version of Mosquitto has breaking changes. (Thanks to the Node Red forum)

You may well need to make some changes to your Mosquitto configuration file and restart in order to let e.g. Node-RED and Domoticz work correctly.

Eclipse has produced a document to support users to migrate from version 1.x to 2.0.
See: https://mosquitto.org/documentation/migrating-to-2-0/

[EddyG]

A short "fix" is to put a 'conf' file in /etc/mosquitto/conf/
Filename fix-temp.conf content and put a '#' before the log_type you do not want.

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listener 1883
log_type error
log_type notice
log_type information
log_type debug
log_type all
log_dest topic
log_type warning
allow_anonymous true
connection_messages true
max_keepalive 10
log_timestamp true
log_timestamp_format %Y-%m-%dT%H:%M:%S

After that

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sudo systemctl restart mosquitto.service

Then you are good for the time being.

[McMelloW]

Thanks for this update. To be sure, is this my current mosquitto version?

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~ $ mosquitto --version
Error: Unknown option '--version'.
mosquitto version 1.5.7

[waaren]

To be sure, is this my current mosquitto version?

Below commands will show you the versions of the mosquitto program and its clients.

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mosquitto -h | grep version
mosquitto_sub --help | grep version | grep mosquitto_
mosquitto_pub --help | grep version | grep mosquitto_

[McMelloW]

Below commands will show you the versions of the mosquitto program and its clients.

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mosquitto -h | grep version
mosquitto_sub --help | grep version | grep mosquitto_
mosquitto_pub --help | grep version | grep mosquitto_

Thanks a lot.

I guess this will have affect zigbee2mqtt too?

[AllesVanZelf]

FireWizard, thank you for this warning. I'm running 1.5.7 right now.
I created a conf file in /etc/mosquitto/conf.d
with this content:

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listener 1883
log_type error
log_type notice
log_type information
log_type debug
log_type all
log_dest topic
log_type warning
#allow_anonymous true
connection_messages true
max_keepalive 10
log_timestamp true
log_timestamp_format %Y-%m-%dT%H:%M:%S 

In /etc/mosquitto I have a mosquitto.conf file with this content:

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pid_file /var/run/mosquitto/mosquitto.pid
persistence true
persistence_location /var/lib/mosquitto/
log_dest file /var/log/mosquitto/mosquitto.log
include_dir /etc/mosquitto/conf.d
allow_anonymous false
password_file /etc/mosquitto/mospass 

With this config, Mosquitto will 1.5.7 not (re)start.
Am I missing something here?

edit: I missed your warning: "and put a '#' before the log_type you do not want".
If I reduce the config to:

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listener 1883
log_type error
connection_messages true
log_timestamp true

Then it is able to start. With one of the others mosquitto cannot start. even the "log_timestamp_format %Y-%m-%dT%H:%M:%S" gives me problem.

[waaren]

I guess this will have affect zigbee2mqtt too?

Not directly but mosquitto is an essential part of the link between zigbee and domoticz.

[FireWizard]

Hi,

@McMelloW wrote.

Thanks for this update. To be sure, is this my current mosquitto version?

If you execute the commands @waaren proposed you will see that:

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pi@RPi1:~ $ mosquitto -h | grep version
mosquitto version 1.5.7
pi@RPi1:~ $ mosquitto_sub --help | grep version | grep mosquitto_
mosquitto_sub version 1.5.7 running on libmosquitto 1.5.7.
pi@RPi1:~ $ mosquitto_pub --help | grep version | grep mosquitto_
mosquitto_pub version 1.5.7 running on libmosquitto 1.5.7.
pi@RPi1:~ $ 

If you prefer to use a graphical environment, you will see it also under $SYS topic.

Screenshot_MQTT-SYS.png (43.49 KiB) Viewed 7000 times

The intention of the initial post was not to encourage users to upgrade, but to inform the users, that if they upgrade, either by purpose or accidentally, there are breaking changes, you should be aware of. As long as you use version 1.x.x and it works as expected, there is no reason to modify the mosquitto.conf files. There is no such as a fix or whatever, because there is nothing to fix.

As far as I know, version 1.5.7 is the latest version in the 1.x.x. series.

I do not expect, that in case of an upgrade to version 2.x.x it will break clients, but you should be aware that you have to create a mosquitto.conf file and probably have to modify an existing one.

Special attention for:

Change default listener from port 1883 to listener 1883(if you have in your conf file a line "port 1883")
Include allow_anonymous true (If you want that anonymous clients can connect. it defaults to false)

Regards

[Lizard]

[..]

As far as I know, version 1.5.7 is the latest version in the 1.x.x. series.

[..]

On my RPI running the latest Buster I had v1.6.12 running before the upgrade to 2.0.8.

Another option is to hold the package, so it will not get updated:

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apt-mark hold mosquitto

Of course then you will miss out on security fixes, but I hope your mqtt isn't internet facing.

[AllesVanZelf]

Now I understand that I just could add listener to the mosquitto.conf file and I'm ready for the upgrade.
I'm on Raspberry buster. fully updated en upgraded and still on 1.5.7

[FireWizard]

Hello @Lizard,

You wrote:

On my RPI running the latest Buster I had v1.6.12 running before the upgrade to 2.0.8.

In that case you had probably an additional repository enabled, as the latest version available in the official Debian (Rasberry Pi OS, formerly Raspbian) repository is 1.5.7. The latest version in the 1.x.x series, released by Eclipse is version 1.6.13. In the Debian repository, I didn't see a version 2.0.x, but that might change of course sooner or later.

Regards

[EddyG]

There is no such as a fix or whatever, because there is nothing to fix.

I corrected my above post to "fix", because of course you are right it is not a fix.

[Havym]

When version 2.0.8 is installed, can i go back to version 1.5.7?
And how can i do that? I'm not good with code.