Erich Blume
26a3ab5b2f
Local nix-build on ringtail (after the go_1_26 + GOTOOLCHAIN=local fix) surfaced the new module-cache hash: specified: sha256-rD7zqomSVv4d8NaC7jXXgihuQvK8guaAN0KrsBRWMVQ= got: sha256-9/v85HyDInJB+9qHauKVuDol6Yf5mkXfMWgCr7RdRTk= Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
140 lines
3.5 KiB
Nix
140 lines
3.5 KiB
Nix
# Nix-built Grafana Alloy telemetry collector
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# Builds v1.16.0 from forge mirror with embedded web UI
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# Uses stdenv + make (not buildGoModule) due to multi-module workspace
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# with local replace directives (collector/ -> ../, ../syntax, ../extension)
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# Built with dockerTools.buildLayeredImage for efficient layer caching
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{ pkgs ? import <nixpkgs> { } }:
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let
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version = "1.16.0";
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src = pkgs.fetchgit {
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url = "https://forge.ops.eblu.me/mirrors/alloy.git";
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rev = "v${version}";
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hash = "sha256-q5R2noxBZ3OPyZqmB+bx3iJKWFxC2WIprcgh9RwjLzk=";
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};
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ui = pkgs.buildNpmPackage {
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inherit version;
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pname = "alloy-ui";
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src = "${src}/internal/web/ui";
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npmDepsHash = "sha256-vResNUT4auDsK9ngnJYfMUUOYr/ikPhrvakqCjGq2Q8=";
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buildPhase = ''
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runHook preBuild
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npx tsc -b
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npx vite build
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runHook postBuild
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'';
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installPhase = ''
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runHook preInstall
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mkdir -p $out/dist
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cp -r dist/* $out/dist/
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runHook postInstall
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'';
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};
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# Pre-fetch Go modules for all three go.mod files (fixed-output derivation)
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goModules = pkgs.stdenv.mkDerivation {
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pname = "alloy-go-modules";
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inherit src version;
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nativeBuildInputs = with pkgs; [ go_1_26 git cacert ];
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buildPhase = ''
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export GOPATH=$TMPDIR/go
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export GOFLAGS=-modcacherw
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export GOTOOLCHAIN=local
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# Download modules for all three go.mod files
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go mod download
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cd syntax && go mod download && cd ..
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cd collector && go mod download && cd ..
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'';
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installPhase = ''
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cp -r $TMPDIR/go/pkg/mod $out
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'';
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outputHashMode = "recursive";
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outputHash = "sha256-9/v85HyDInJB+9qHauKVuDol6Yf5mkXfMWgCr7RdRTk=";
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outputHashAlgo = "sha256";
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};
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alloy = pkgs.stdenv.mkDerivation {
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inherit src version;
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pname = "alloy";
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nativeBuildInputs = with pkgs; [
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go_1_26
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git
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gnumake
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cacert
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];
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buildPhase = ''
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runHook preBuild
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export HOME=$TMPDIR
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export GOPATH=$TMPDIR/go
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export GOFLAGS=-modcacherw
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export GOTOOLCHAIN=local
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# Populate module cache from pre-fetched modules
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mkdir -p $GOPATH/pkg
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cp -r ${goModules} $GOPATH/pkg/mod
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chmod -R u+w $GOPATH/pkg/mod
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# Copy pre-built web UI assets
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cp -r ${ui}/dist/ internal/web/ui/dist
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# Build using upstream Makefile
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# promtail_journal_enabled omitted: requires systemd headers
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# and our k8s deployments read pod logs from the filesystem, not journald
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RELEASE_BUILD=1 \
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VERSION=v${version} \
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GO_TAGS="netgo embedalloyui" \
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SKIP_UI_BUILD=1 \
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make alloy
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runHook postBuild
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'';
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installPhase = ''
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runHook preInstall
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mkdir -p $out/bin
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cp build/alloy $out/bin/alloy
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runHook postInstall
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'';
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meta = with pkgs.lib; {
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description = "OpenTelemetry Collector distribution with programmable pipelines";
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homepage = "https://grafana.com/docs/alloy/";
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license = licenses.asl20;
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mainProgram = "alloy";
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};
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};
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in
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pkgs.dockerTools.buildLayeredImage {
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name = "blumeops/alloy";
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contents = [
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alloy
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pkgs.cacert
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pkgs.tzdata
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];
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config = {
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Entrypoint = [ "${alloy}/bin/alloy" ];
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Cmd = [ "run" "/etc/alloy/config.alloy" "--storage.path=/var/lib/alloy/data" ];
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Env = [
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"SSL_CERT_FILE=${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt"
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"TZDIR=${pkgs.tzdata}/share/zoneinfo"
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"ALLOY_DEPLOY_MODE=docker"
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];
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ExposedPorts = {
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"12345/tcp" = { };
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};
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User = "65534";
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};
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}
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