Comment by esxzawq for I have used virtualbox 1 vm for Controller ( 8G or 6G ram , 4 core cpu) 1 vm for Compute ( 4G ram , 4 or 2 core cpu) Each vm has 2 network interfaces 1- bridg adapter for provider network 2- vboxnet for management network (10.0.0.0/24 base on the tutorials) An then followed this toturial : https://docs.openstack.org/install-gu...

@najeh I have not specifed the provider IP in both controller and compute and both are working properly and for connecting to the compute or controller you should use management IP