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Questions tagged [emq]

EMQ (EMQX) is a distributed, massively scalable, highly extensible MQTT message broker written in Erlang/OTP.

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69 questions
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Starting a node in emqtt and creating cluster

I am new to emqtt and erlang. Using the documentation provided in emqtt.io I configured the emqtt in my machine and wanted to create a cluster. I followed the steps given below to create a node erl -name node1@127.0.0.1 erl -name…
user5098533
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emq and Spring AMQP

I am new to both Spring AMQP and MQTT world. I have a legacy application which uses Rabbitmq as broker for mqtt messages.There are plans to use emqtt as broker and I want to know if my existing listeners ( on mqtt topics) written using Spring AMQP…
Phoenix
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MQTT Retained messages not received when subscribing same topic from different applications at the same time

TL;DR When subscribing to the same topic tree with multiple clients at the same time, not all clients receive the retained messages as expected! in detail / use case In a real project several applications subscribe (nearly at the same time because…
FrVaBe
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How is the EMQ Web Dashboard user/password changed?

I do not see any configuration or documentation on how to change the username/password for the emqtt.io Web Dashboard. Does anyone know how to change this?
Jason
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EMQ MQTT fails to run after successfull build on Raspberry Pi 2 B+

Following instructions from: http://www.xappsoftware.com/wordpress/2017/02/28/install-the-emq-broker-also-known-as-emqttd-on-the-raspberry-pi-raspbian/ I built the latest version of Erlang and subsequently installed deps finally ran make…
Birla
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Erlang MQTT configuration broken?

There is a way (according to this and this) in Erlang eMQ to enable in my MQTT Broker a plugin for the emq_auth_username, meaning I can config my broker to allow connections bases on my etc/emq_auth_username.conf file. I did create the file and put…
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MQTT data handling when bridge connection is down

I have established a MQTT bridge connection between Mosquitto and EMQ. 1) Is the bridge connection between 2 MQTTs always stable? 2) If not, how does it handle the Data Communication when the bridge is down?!
Abishek G
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Creating a bridge between mosquitto MQTT and EMQX using NodeJS

I have set up mosquitto with NodeJs and EMQX with the NodeJs in 2 different applications. I want to create a bridge between both my MQTT clients and send and receive values from both ends. Tried creating a bridge using WebSocket Options in my MQTT…
Abishek G
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How can I limit certain topics to be used only by specific clients?

How do I configure emqx v3.2.1 that I used?
spike666
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