[Samba] Upgrade fileserver to 4.9.5

[Micha Ballmann]

Hello Community,

i have a fileserver, running samba 4.8.5 (compiled from source). The 
server is a domain member from my SAMBA4 ADDC enviroment, running on 
samba 4.7.12.

Now i want to upgrade my fileserver to latest major 4.9.5.

Can i safely inplace upgrade my fileserver from 4.8.5->4.9.5 or do i 
need some preparation stuff before i can upgrade?

All systems are running on Ubuntu 18.04 and were compiled from source.

Best regards

Micha