125 lines
3.9 KiB
Nix
125 lines
3.9 KiB
Nix
test@{ config, lib, hostPkgs, ... }:
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let
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pkgs = config.nodes.client.nixpkgs.pkgs;
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# Trivial Nix expression to build remotely.
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expr = config: nr: pkgs.writeText "expr.nix"
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''
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let utils = builtins.storePath ${config.system.build.extraUtils}; in
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derivation {
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name = "hello-${toString nr}";
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system = "i686-linux";
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PATH = "''${utils}/bin";
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builder = "''${utils}/bin/sh";
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args = [ "-c" "${
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lib.concatStringsSep "; " [
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''if [[ -n $NIX_LOG_FD ]]''
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''then echo '@nix {\"action\":\"setPhase\",\"phase\":\"buildPhase\"}' >&''$NIX_LOG_FD''
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"fi"
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"echo Hello"
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"mkdir $out"
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"cat /proc/sys/kernel/hostname > $out/host"
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]
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}" ];
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outputs = [ "out" ];
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}
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'';
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in
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{
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options = {
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builders.config = lib.mkOption {
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type = lib.types.deferredModule;
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description = ''
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Configuration to add to the builder nodes.
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'';
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default = { };
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};
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};
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config = {
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name = lib.mkDefault "remote-builds-ssh-ng";
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nodes =
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{
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builder =
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{ config, pkgs, ... }:
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{
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imports = [ test.config.builders.config ];
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services.openssh.enable = true;
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virtualisation.writableStore = true;
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nix.settings.sandbox = true;
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nix.settings.substituters = lib.mkForce [ ];
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};
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client =
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{ config, lib, pkgs, ... }:
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{
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nix.settings.max-jobs = 0; # force remote building
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nix.distributedBuilds = true;
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nix.buildMachines =
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[{
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hostName = "builder";
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sshUser = "root";
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sshKey = "/root/.ssh/id_ed25519";
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system = "i686-linux";
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maxJobs = 1;
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protocol = "ssh-ng";
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}];
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virtualisation.writableStore = true;
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virtualisation.additionalPaths = [ config.system.build.extraUtils ];
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nix.settings.substituters = lib.mkForce [ ];
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programs.ssh.extraConfig = "ConnectTimeout 30";
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};
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};
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testScript = { nodes }: ''
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# fmt: off
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import subprocess
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start_all()
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# Create an SSH key on the client.
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subprocess.run([
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"${hostPkgs.openssh}/bin/ssh-keygen", "-t", "ed25519", "-f", "key", "-N", ""
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], capture_output=True, check=True)
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client.succeed("mkdir -p -m 700 /root/.ssh")
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client.copy_from_host("key", "/root/.ssh/id_ed25519")
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client.succeed("chmod 600 /root/.ssh/id_ed25519")
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# Install the SSH key on the builder.
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client.wait_for_unit("network.target")
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builder.succeed("mkdir -p -m 700 /root/.ssh")
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builder.copy_from_host("key.pub", "/root/.ssh/authorized_keys")
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builder.wait_for_unit("sshd")
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client.succeed(f"ssh -o StrictHostKeyChecking=no {builder.name} 'echo hello world'")
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# Perform a build
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out = client.succeed("nix-build ${expr nodes.client 1} 2> build-output")
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# Verify that the build was done on the builder
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builder.succeed(f"test -e {out.strip()}")
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# Print the build log, prefix the log lines to avoid nix intercepting lines starting with @nix
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buildOutput = client.succeed("sed -e 's/^/build-output:/' build-output")
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print(buildOutput)
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# Make sure that we get the expected build output
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client.succeed("grep -qF Hello build-output")
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# We don't want phase reporting in the build output
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client.fail("grep -qF '@nix' build-output")
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# Get the log file
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client.succeed(f"nix-store --read-log {out.strip()} > log-output")
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# Prefix the log lines to avoid nix intercepting lines starting with @nix
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logOutput = client.succeed("sed -e 's/^/log-file:/' log-output")
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print(logOutput)
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# Check that we get phase reporting in the log file
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client.succeed("grep -q '@nix {\"action\":\"setPhase\",\"phase\":\"buildPhase\"}' log-output")
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'';
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};
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}
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