I've been running Ubuntu on servers for over 12 years. It generally works great... until you upgrade it to the next major release. I haven't had a smooth Ubuntu upgrade in years. During one upgrade, the system lost the default route. There was some bug with multiple NICs. Another time, it decided to rename all the network interfaces, requiring a bunch of manual reconfiguration. Then for some reason my boot device got switched (perhaps this was really a UEFI issue?) and the system failed to restart.

Some of these systems have 3 or 4 NICs, multiple HDs and NVMEs in RAID configurations. Is this that exotic a configuration?