137 lines
4.7 KiB
HTML
137 lines
4.7 KiB
HTML
<!DOCTYPE html>
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<html> <head>
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<meta name="generator" content="Hugo 0.71.0-DEV" />
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>gokrazy - a pure-Go userland for your Raspberry Pi 3 or 4 appliances</title>
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<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css">
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<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
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<link href="/jumbotron-narrow.css" rel="stylesheet">
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<link rel="stylesheet" href="//fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400">
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<style type="text/css">
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body {
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font-family: "Open Sans";
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}
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.table-striped>tr:nth-child(odd){
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background-color:red;
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}
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</style>
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</head>
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<body>
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<div class="container"><div class="header"><nav>
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<ul class="nav nav-pills pull-right">
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<li role="presentation" class="active"><a href="/">Home <span class="sr-only">(current)</span></a></li>
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<li role="presentation" class=""><a href="/platforms/">Platforms </a></li>
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<li role="presentation" class=""><a href="/quickstart/">Quickstart </a></li>
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<li role="presentation" class=""><a href="/showcase/">Showcase </a></li>
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<li role="presentation" class=""><a href="/userguide/">Userguide </a></li>
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<li role="presentation" class=""><a href="https://github.com/gokrazy/gokrazy">Source </a></li>
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</ul>
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</nav>
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<h3 class="text-muted">gokrazy</h3>
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</div>
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<div class="jumbotron" style="padding: 1em; padding-right: 0; padding-left: 2em; text-align: left">
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<img src="logo.svg" width="200" height="217" align="right" text="gokrazy 'crazy gopher' logo">
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<h2>gokrazy is a pure-Go userland for your Raspberry Pi 3/4 appliances</h2>
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<p>
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For a long time, we were unhappy with having to care about security
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issues and Linux distribution maintenance on our various Raspberry Pis.
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</p>
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<p>
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Then, we had a crazy idea: what if we got rid of memory-unsafe
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languages and all software we don’t strictly need?
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</p>
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<p>
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Turns out this is feasible. gokrazy is the result.
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</p>
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</div>
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<div class="row marketing">
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<div class="col-lg-6">
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<h4>Your app(s) + only 4 moving parts</h4>
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<ol style="margin-bottom: 0">
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<li>the <a href="https://github.com/gokrazy/kernel">Linux kernel</a></li>
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<li>the <a href="https://github.com/gokrazy/firmware">Raspberry Pi firmware files</a></li>
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<li>the <a href="https://golang.org/">Go</a> compiler and standard library</li>
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<li>the gokrazy userland</li>
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</ol>
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<p>
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All are updated using the same command.
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</p>
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<h4>Web status interface</h4>
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<p>
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On a regular Linux distribution, we’d largely use systemctl’s start,
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stop, restart and status verbs to manage our applications. gokrazy
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comes with a <a href="overview.png">convenient web interface</a> for
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seeing process status and stopping/restarting processes.
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</p>
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<h4>Debugging</h4>
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<p>
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Sometimes, an interactive <code>busybox</code> session or a quick
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<code>tcpdump</code> run are invaluable. <a
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href="https://github.com/gokrazy/breakglass">breakglass</a> allows
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you to temporarily enable SSH/SCP-based authenticated remote code
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execution: scp your statically compiled binary, then run it
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interactively via ssh.
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</p>
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</div>
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<div class="col-lg-6">
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<h4>Constraints</h4>
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<p>
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Due to no C runtime environment being present, your code must compile
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with the environment variable <code>CGO_ENABLED=0</code>. To
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cross-compile for the Raspberry Pi 3 or 4,
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use <code>GOARCH=arm64</code>. If your program still builds, you’re
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good to go!
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</p>
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<h4>Network updates</h4>
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<p>
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After building a new gokrazy image on your computer, you can easily
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update an existing gokrazy installation in-place thanks to the A/B
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partitioning scheme we use. Just specify the <code>-update</code>
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flag when building your new image.
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</p>
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<h4>Minimal state and configuration</h4>
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<p>
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A tiny amount of configuration is built into the images (e.g.
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hostname, password, serial console behavior). In general, we prefer
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auto-configuration (e.g. DHCP) over config files. If you need more
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configurability, you may need to replace some of our programs.
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</p>
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</div>
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</div>
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<footer class="footer" style="text-align: center">
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<p>© 2017 gokrazy authors (Michael Stapelberg and contributors)</p>
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</footer>
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</div>
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</body>
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</html>
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</div>
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</body>
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</html>
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