There’s absolutely nothing new about a binary that can be run in a number of different roles depending on configuration (either statically configured or assigne

There’s absolutely nothing new about a binary that can be run in a number of different roles depending on configuration (either statically configured or assigned by some controller process). For example, FoundationDB does exactly this (via dynamic assignment), as do many other databases. All of the HashiCorp runtime tools also do it. I’m sure there are also much earlier examples.