RenderPal
RenderPal provides a way to globally define Environment Variables. It is done throught the RenderPal.env file.
For more details, see the end of the RenderPal documentation: RenderPal environment variables file
For example if you did not instal the package locally on each render nodes, you need to specify the Maya Module Path in this file.
MAYA_MODULE_PATH=C:\Golaem\GolaemCrowd-4.2-Maya2014
Notice that the RenderPal.env file is not a script file. So the variable expansion will not work and you should replace all variables (found between % or !) by their real value.