MQTT stats in management UI ?

[Matteo Brancaleoni]

Hello there,

long time RabbitMQ user here, just started exploring the MQTT plugin.

Plugin itself works ok, both plain and SSL, can publish and subscribe without any issue.

But the management UI does not provide any stats, except for network traffic over the client connections. Is this a known limitation or I'm doing something wrong?

I can see the queues created for the mqtt clients, but are reported as idle (while messages are flowing), same for the default exchange used "amqp.topic" which is reported idle.

Using RabbitMQ 3.12.2 over Erlang 25.3.2.5, all connections are done over SSL.

Maybe this aspect is written somewhere, but haven't found yet.

thanks,

Matteo

[Stefano Bassetto]

up

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[David Ansari]

Hey Matteo,

thanks for exploring the MQTT plugin :)

Yes, this is a known limitation starting from Native MQTT in 3.12.

We documented this at several places. 

See also

1. https://github.com/rabbitmq/rabbitmq-server/commit/db92a19aab6e4abedf603cfb32200480a9e35ebe

1. https://github.com/rabbitmq/rabbitmq-server/discussions/8515

1. https://next.rabbitmq.com/mqtt.html#metrics

Please use Prometheus as metrics in the management plugin are deprecated:

https://blog.rabbitmq.com/posts/2021/08/4.0-deprecation-announcements/#disable-metrics-delivery-via-the-management-api--ui

Cheers,

David