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wtf is gokrazy?

tklauser/gokrazy — explained in plain English

Analysis updated 2026-08-15 · repo last pushed 2018-10-05

GoAudience · developerComplexity · 3/5DormantSetup · moderate

TL;DR

Gokrazy packs Go programs directly onto an SD card so a Raspberry Pi boots in seconds and runs only your apps, no full operating system. It keeps two copies of itself for safe updates and restarts crashed apps automatically.

Mindmap

mindmap
  root((repo))
    What it does
      Boots Pi in seconds
      Runs Go apps only
      Restarts crashed apps
    How it works
      Bundles firmware and kernel
      Dual partition updates
      Permanent data partition
    Use cases
      Home media server
      Network storage
      IoT sensors
    Tech stack
      Go
      Raspberry Pi 3
      Linux kernel
    Audience
      Go developers
      Hardware makers
    Tradeoffs
      Go only no C
      Minimal customization

Code map

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Why would anyone build with this?

REASON 1

Run a home media server on a Raspberry Pi using only Go programs.

REASON 2

Build network-attached storage that boots in seconds and updates safely.

REASON 3

Deploy IoT sensor devices that auto-restart apps if they crash.

REASON 4

Put a single Go application on dedicated hardware without a full OS.

What's in the stack?

GoLinux kernelRaspberry Pi 3

How it stacks up

tklauser/gokrazy0verflowme/cloudflared0verflowme/pulumi-vultr
LanguageGoGoGo
Last pushed2018-10-052024-10-192022-12-26
MaintenanceDormantStaleDormant
Setup difficultymoderatemoderatehard
Complexity3/52/53/5
Audiencedeveloperdeveloperops devops

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · moderate Time to first run · 30min

Requires a Raspberry Pi 3 and an SD card, plus the Go toolchain installed on your computer to run the packing tool.

No license information was mentioned in the explanation.

Wtf does this do

Gokrazy lets you turn a Raspberry Pi 3 into a dedicated appliance running only Go applications. Instead of installing a full operating system with countless background processes and configuration files, you pack your Go programs directly onto an SD card, pop it into the Pi, and boot up. Within about ten seconds, your device is running and accessible through a web interface. It's designed for people who want a minimal, maintenance-free appliance rather than a general-purpose computer. The way it works is straightforward. You run a packing tool on your computer that bundles the Raspberry Pi firmware, a Linux kernel, and your Go applications into an SD card image. When the Pi boots, a small built-in program starts up and supervises all your applications, restarting them automatically if they crash. The system keeps two copies of itself on separate partitions, so when you push an update, it writes to the inactive copy and switches over on the next reboot. This reduces the risk of breaking your device during an update. A fourth partition holds permanent data that survives updates. This project is aimed at developers building standalone devices like home media servers, network-attached storage, IoT sensors, or any project where a Raspberry Pi needs to run a specific set of programs reliably. If you've built a Go application and want it running on dedicated hardware without the overhead and security concerns of a traditional Linux distribution, this approach strips everything down to the essentials. The notable tradeoff is the strict Go-only philosophy. The creator built this because maintaining C software and its dependencies became too time-consuming. By going Go-only, you avoid entire categories of system administration headaches, but you're limited to what can be written or compiled in Go. The README also points out that customization options exist for changing how programs behave on the device and even swapping out the init program, though these require some familiarity with Go's build system.

Yoink these prompts

Prompt 1
I have a Go application that serves a web dashboard. Help me set up gokrazy to pack it onto an SD card and run it on a Raspberry Pi 3.
Prompt 2
Walk me through the gokrazy update process, how does the dual-partition system work and how do I push a new version of my Go app to the device?
Prompt 3
I want to add a permanent data partition to my gokrazy appliance so config files survive updates. Show me how to set that up.
Prompt 4
My gokrazy app keeps crashing. How do I use the built-in supervisor to understand the restart behavior and debug what is going wrong?

Frequently asked questions

wtf is gokrazy?

Gokrazy packs Go programs directly onto an SD card so a Raspberry Pi boots in seconds and runs only your apps, no full operating system. It keeps two copies of itself for safe updates and restarts crashed apps automatically.

What language is gokrazy written in?

Mainly Go. The stack also includes Go, Linux kernel, Raspberry Pi 3.

Is gokrazy actively maintained?

Dormant — no commits in 2+ years (last push 2018-10-05).

What license does gokrazy use?

No license information was mentioned in the explanation.

How hard is gokrazy to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is gokrazy for?

Mainly developer.

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