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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

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?

adevx 5y ago
It probably isn't a configuration that is well tested. I only update servers between LTS releases and take the opportunity to start with a fresh install. I think this makes sense even for Windows servers. Too many things change, not only in hardware configuration/drivers, but also major bumps in software packages eg: nginx, apache, postgresql etc.
- icedchai 5y ago
  Yes, part of my problem was a few of these systems had been through multiple upgrades: 14.04 -> 16.04 -> 20.04. Still, these are all LTS releases. I was able to fix all of these problems by dropping to single user mode. But I've been working with Linux since 1993...