Go and Rust — Tools That Ship as One File
Your Python health check works, and now fifty servers need it. Some have Python 3.8, some 3.12, one has none. Copying a script is easy; copying a working interpreter plus its libraries everywhere is not. This is exactly the problem compiled languages solve.
The rule
Compile once into a single binary; the target needs nothing else installed.
A compiled language turns your source code into a machine-code file ahead of time. Go goes further: by default it bundles the libraries your program uses into that one file. You copy it to a server and run it. No interpreter, no pip install.
Go can also cross-compile: from your laptop you can build a program for a different operating system and processor by setting two variables.
GOOS=linux GOARCH=amd64 go build -o healthcheck .
GOOS=linux GOARCH=arm64 go build -o healthcheck-arm .That is why so much DevOps tooling is written in Go: Docker, Kubernetes, Terraform and Prometheus are all Go programs. Go is also simple on purpose, with built-in support for running many tasks at once, which suits network tools.
Rust also compiles to fast native binaries. Its headline feature is memory safety without a garbage collector: the compiler refuses code that could read freed memory or race on shared data. That makes it attractive for performance-critical, long-running tools, such as proxies and command-line utilities like ripgrep. The price is a steeper learning curve than Go.
The shortcut
Ask one question: does the machine that runs it need a runtime installed?
- Python, Ruby, Node.js: yes. The server needs the interpreter and the right packages.
- Go, Rust: no. Ship the binary built for that operating system and processor.
If the answer "yes" is a problem, because many machines, mixed versions or a minimal container, reach for a compiled language.
Look at the targets
Forty-eight servers are Linux on x86-64, two are Linux on ARM. Their Python versions differ.
The trap: a binary is built for one operating system and processor. An ARM build will not run on an x86-64 server, so name your files clearly.
Drills
Answer fast — trust the rule.
Which command builds a Go program for Linux on 64-bit ARM?
In which language are Docker and Kubernetes mainly written?
What is Rust's best-known advantage for low-level tools?
A Python script runs fine on your laptop. What must the server have to run it too?
Remember
- Compile once into a single binary; the target needs nothing else installed.
- Shortcut: "does the target need a runtime?" If that hurts, compile.
- Trap: a binary only runs on the operating system and processor it was built for.