Vending machines

Where to find them
Before the security checkpoint, on the ground floor:

In the check-in area, along the windows
In the arrivals area for domestic flights, by the exit
In the arrivals area for international flights, by the currency exchange office

After the security checkpoint: 
In the waiting area for gates 20 to 28
By gate 31
By gates 36 and 37

Before security, on the first floor: 

At Nourcy Café Traiteur, between the check-in area and the arrivals area for international flights