Ignition can be installed on Linux, Mac OSX, and Windows.  Instructions for installing on each of these platforms is shown below

• Linux
  • https://docs.inductiveautomation.com/display/DOC79/Linux+-+Install
• OSX
  • https://docs.inductiveautomation.com/display/DOC79/Mac+OS+X+-+Install
• Windows
  • https://docs.inductiveautomation.com/display/DOC79/Windows+-+Install

Note MQTT Modules support both 7.7.X, 7.8.X, and 7.9.X versions of Ignition.  Make sure to download one of these versions of Ignition.

The latest MQTT Modules do not require an external database in Ignition to be configured.