Serial Interface

The serial input plugin, allows to retrieve messages/data from a Serial interface.

Configuration Parameters

Getting Started

In order to retrieve messages over the Serial interface, you can run the plugin from the command line or through the configuration file:

Command Line

The following example loads the input serial plugin where it set a Bitrate of 9600, listen from the /dev/tnt0 interface and use the custom tag data to route the message.

The above interface (/dev/tnt0) is an emulation of the serial interface (more details at bottom), for demonstrative purposes we will write some message to the other end of the interface, in this case /dev/tnt1, e.g:

In Fluent Bit you should see an output like this:

Now using the Separator configuration, we could send multiple messages at once (run this command after starting Fluent Bit):

Configuration File

In your main configuration file append the following Input & Output sections:

Emulating Serial Interface on Linux

The following content is some extra information that will allow you to emulate a serial interface on your Linux system, so you can test this Serial input plugin locally in case you don't have such interface in your computer. The following procedure has been tested on Ubuntu 15.04 running a Linux Kernel 4.0.

Build and install the tty0tty module

Download the sources

Unpack and compile

Copy the new kernel module into the kernel modules directory

Load the module

You should see new serial ports in /dev/ (ls /dev/tnt*) Give appropriate permissions to the new serial ports:

When the module is loaded, it will interconnect the following virtual interfaces: