Select the machine on which you want to supply Fluent-bit.

Wait until the compilation process has been finished.

Click on the add button.

Fill in the Fluent-bit configuration parameters in the Instance Parameter field. You can use the <parameter> tag to specify certain parameters of your instance. The name for the Fluent-bit configuration parameter is conf_text. Because the Instance Parameter itself is written in XML we have to escape our Fluent-bit Configuration File. You can use an Online XML escape tool (for instance appdevtools).

The escaped form of the configuration would be something similar to:

<?xml version="1.0" encoding="UTF-8"?>
<instance>
    <parameter id="input">{
        "name": "mqtt",
        "tag": "YOUR_TAG_NAME",
        "port": 1883
}</parameter>
    <parameter id="output">{
        "name": "forward",
        "match": "YOUR_TAG_NAME",
        "host": "<IP>",
        "port": 24224
}</parameter>
</instance> 

Don't forget to correctly fill in your computer reference, Instance name, url etc.

Finally click Proceed to request the instance.

This step can take some time.  

In your SlapOS dashboard you can see you newly requested instance.

Instance is ready when the the Monitoring Status is green.

Note the Parameters section - there are the Fluent-bit configuration parameters we defined earlier.

Login to your  Sensor and run the following command : 

sudo slapos node

You see that a new service for Fluentd is added.

And the generated Fluent-bit configuration file is located here :

/srv/slapgrid/slappartX/etc/fluent-bit-config-file.cfg

Now your sensor is ready to retrieve data and to send it to, in our case, the IOT Gateway.