MQTT data source for Grafana

The MQTT data source plugin allows you to visualize streaming MQTT data from within Grafana.

This datasource is under active development, all feedback and help is encouraged!

Requirements

The MQTT data source has the following requirements:

• Grafana user with a server or organization administration role; refer to Permissions.
• Access to a MQTT broker.

Known limitations

• The plugin currently does not support all of the MQTT CONNECT packet options.
• The plugin currently does not support TLS.
• Including multiple topics in a panel is not yet well supported.
• This plugin automatically supports topics publishing very simple JSON formatted messages. Note that only the following structure is supported as of now:

{
    'value1': 1.0,
    'value2': 2,
    'value3': 3.33,
    ...
}

We do plan to support more complex JSON data structures in the upcoming releases. Contributions are highly encouraged!

• This plugin currently attaches timestamps to the messages when they are received, so there is no way to have custom timestamp for messages.

Install the plugin

Installation Pre-requisites

Refer to: Building a Streaming Datasource Backend Plugin

Installation Steps

1. Clone the plugin to your Grafana plugins directory.
2. Build the plugin by running yarn install and then yarn build.
3. Run mage reloadPlugin or restart Grafana for the plugin to load.

Meet compatibility requirements

This plugin currently supports MQTT v3.1.x.

Note: Since this plugin uses the Grafana Live Streaming API, make sure to use Grafana v8.0+

Verify that the plugin is installed

1. In Grafana from the left-hand menu, navigate to Configuration > Data sources.
2. From the top-right corner, click the Add data source button.
3. Search for MQTT in the search field, and hover over the MQTT search result.
4. Click the Select button for MQTT.

Configure the data source

Add a data source by filling in the following fields:

Basic fields

Field	Description
Name	A name for this particular AppDynamics data source
Host	The hostname or IP of the MQTT Broker
Port	The port used by the MQTT Broker (default 1883)

Authentication fields

Field	Description
Username	(Optional) The username to use when connecting to the MQTT broker
Password	(Optional) The password to use when connecting to the MQTT broker

Query the data source

The query editor allows you to specify which MQTT topics the panel will subscribe to. Refer to the MQTT v3.1.1 specification for more information about valid topic names and filters.