> I'd guess the simplest way is to write a small script which copies the binaries over to all the machines I do roughly this. custom application is rigged to r

> I'd guess the simplest way is to write a small script which copies the binaries over to all the machines I do roughly this. custom application is rigged to run as a service on debian , managed by systemd. I.e. path of least resistance, app is run in idiomatic way by the operating system. I have an ansible script to copy over a new version, ensure all dependencies are installed using apt, run admin tasks to update anything that needs updating in database, then restart the service to pick up the new version of application code. It is a bit sloppy & doesn't automate everything but does automate the common path for upgrading an application code change to an existing deployment.