Preparing a Headless Linux Server for Web Widgets
This article explains how to prepare a headless (console-only) Linux server for running Iotellect Server that operates web widgets, i.e. widgets that run in a web browser without Java support.
To enable web widget operation, first install Xvfb. Xvfb is X virtual framebuffer, it acts like an in-memory X server (no output is produced to the screen).
Installing XVFB
Follow the below steps to setup Xvfb as a service.
First you should install Xvfb and necessary libraries:
Ubuntu/Debian:
sudo apt-get install xvfb
sudo apt-get install libxrender-dev
sudo apt-get install libxtst-dev
RedHat/Fedora/CentOS:
yum install xorg-x11-server-Xvfb
yum install libXrender.x86_64
yum install libXtst.x86_64
 | You can use search option of package manager to define correct name of package you need: |
Enabling XVFB Usage
Find a startup configuration file of your Iotellect Server service (%LS_BINARY%.conf or %LS_BINARY%.service -- see Service Mode) and uncomment the line that starts iot_server via xvfb-run. Comment an adjacent line that starts iot_server directly.
Restart the server after completing configuration.
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