add 'notipxe' netboot loader based on systemd-initrd + u-root
This commit is contained in:
parent
aeb8102ae4
commit
79dea0686b
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@ -1,4 +1,4 @@
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{ lib, pkgs, nodes, config, ... }:
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{ lib, pkgs, nodes, config, modulesPath, ... }:
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# The way the connection is established is specific to the wob01 site and the Intel S2600KPR blades.
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# Proper netboot is not possible, because while the blades and the APU board (which is the netboot
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@ -21,36 +21,19 @@ in {
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bmcIp = "192.168.1.${toString (node.config.bagel.baremetal.builders.num * 4 + 2)}";
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gw = "2a01:584:11::1";
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dns = "2a01:580:6000::ff01";
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ipxe = node.pkgs.ipxe.override {
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embedScript = builtins.toFile "bootstrap-${node.config.networking.hostName}.ipxe" ''
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#!ipxe
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ifopen net0
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echo ip ${ip}/64
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set net0/ip6:ipv6 ${ip}
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set net0/len6:int8 64
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echo gw ${gw}
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set net0/gateway6:ipv6 ${gw}
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echo dns ${dns}
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set net0/dns6:ipv6 ${dns}
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# wait for the lacp link to come up
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ping --count 20 ${gw}
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chain https://hydra.forkos.org/job/infra/main/${node.config.networking.hostName}/latest/download-by-type/file/ipxe
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# if it fails, show a shell
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shell
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'';
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};
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notipxe = node.config.system.build.notipxe.config.system.build.usbImage;
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in lib.nameValuePair "iusb-spoof-${nodename}" {
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wantedBy = [ "multi-user.target" ];
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# The iusb-spoof service is currently unreliable and may lock up the BMC + block the builder from booting
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# Thus, it has to be started manually per builder when needed.
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#wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Restart = "on-failure";
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Restart = "always";
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};
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script = ''
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AUTH_TOKEN=$(${pkgs.iusb-spoof}/bin/make-token ${bmcIp})
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exec ${pkgs.iusb-spoof}/bin/iusb-spoof -r ${bmcIp} 5123 $AUTH_TOKEN ${ipxe}/ipxe-efi.usb
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exec ${pkgs.iusb-spoof}/bin/iusb-spoof -r ${bmcIp} 5123 $AUTH_TOKEN ${notipxe}
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'';
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}) (lib.filterAttrs (_: node: node.config.bagel.baremetal.builders.enable && node.config.bagel.baremetal.builders.netboot) nodes);
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}
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@ -1,5 +1,6 @@
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[
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(final: prev: {
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iusb-spoof = final.callPackage ./iusb-spoof.nix {};
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u-root = final.callPackage ./u-root {};
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})
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]
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20
overlays/u-root/default.nix
Normal file
20
overlays/u-root/default.nix
Normal file
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@ -0,0 +1,20 @@
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{ buildGoModule, fetchFromGitHub }:
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buildGoModule rec {
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pname = "u-root";
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version = "0.14.0";
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src = fetchFromGitHub {
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owner = "u-root";
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repo = "u-root";
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rev = "v${version}";
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hash = "sha256-8zA3pHf45MdUcq/MA/mf0KCTxB1viHieU/oigYwIPgo=";
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};
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patches = [
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./u-root-allow-https.patch
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];
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vendorHash = null;
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doCheck = false;
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}
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12
overlays/u-root/u-root-allow-https.patch
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12
overlays/u-root/u-root-allow-https.patch
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@ -0,0 +1,12 @@
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diff --git a/pkg/curl/schemes.go b/pkg/curl/schemes.go
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index 8bac3bc0..cd396cbc 100644
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--- a/pkg/curl/schemes.go
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+++ b/pkg/curl/schemes.go
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@@ -81,6 +81,7 @@ var (
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DefaultSchemes = Schemes{
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"tftp": DefaultTFTPClient,
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"http": DefaultHTTPClient,
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+ "https": DefaultHTTPClient,
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"file": &LocalFileClient{},
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}
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)
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@ -1,8 +1,10 @@
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{ pkgs, lib, config, extendModules, ... }:
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{ pkgs, lib, config, ... }:
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let
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cfg = config.bagel.baremetal.builders;
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in
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{
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imports = [ ./netboot.nix ];
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options = {
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bagel.baremetal.builders = {
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@ -182,39 +184,6 @@ in
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environment.systemPackages = [ pkgs.ipmitool ];
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system.build = lib.mkIf cfg.netboot {
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netbootVariant = extendModules {
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modules = [
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(
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{ modulesPath, ... }:
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{
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imports = [ (modulesPath + "/installer/netboot/netboot.nix") ];
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}
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)
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];
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};
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netbootDir = let
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kernelTarget = pkgs.stdenv.hostPlatform.linux-kernel.target;
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build = config.system.build.netbootVariant.config.system.build;
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in
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pkgs.symlinkJoin {
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name = "netboot";
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paths = [
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build.netbootRamdisk
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build.kernel
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build.netbootIpxeScript
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];
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postBuild = ''
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mkdir -p $out/nix-support
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echo "file ${kernelTarget} $out/${kernelTarget}" >> $out/nix-support/hydra-build-products
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echo "file initrd $out/initrd" >> $out/nix-support/hydra-build-products
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echo "file ipxe $out/netboot.ipxe" >> $out/nix-support/hydra-build-products
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'';
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preferLocalBuild = true;
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};
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};
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system.stateVersion = "24.05";
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};
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}
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149
services/baremetal-builder/netboot.nix
Normal file
149
services/baremetal-builder/netboot.nix
Normal file
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@ -0,0 +1,149 @@
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{ modulesPath, pkgs, lib, config, extendModules, ... }@node:
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let
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cfg = config.bagel.baremetal.builders;
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in
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{
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config = lib.mkIf (cfg.enable && cfg.netboot) {
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system.build = {
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# Build a kernel and initramfs which will download the IPXE script from hydra using
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# u-root pxeboot tool and kexec into the final netbooted system.
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notipxe = import (modulesPath + "/..") {
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system = "x86_64-linux";
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configuration =
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{ pkgs, config, ... }:
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{
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system.stateVersion = "24.11";
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boot.initrd.availableKernelModules = [ "ahci" "ehci_pci" "usb_storage" "usbhid" "sd_mod" "igb" "bonding" ];
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boot.kernelParams = [ "console=ttyS0,115200" "panic=1" "boot.panic_on_fail" ];
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#boot.initrd.systemd.emergencyAccess = true;
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networking.hostName = "${node.config.networking.hostName}-boot";
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nixpkgs.overlays = import ../../overlays;
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boot.loader.grub.enable = false;
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fileSystems."/".device = "bogus"; # this config will never be booted
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boot.initrd.systemd.enable = true;
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boot.initrd.systemd.network = {
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enable = true;
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networks = node.config.systemd.network.networks;
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netdevs = node.config.systemd.network.netdevs;
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};
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boot.initrd.systemd.storePaths = [
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"${pkgs.u-root}/bin/pxeboot"
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"${pkgs.iputils}/bin/ping"
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];
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boot.initrd.systemd.services.kexec = {
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serviceConfig.Restart = "on-failure";
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serviceConfig.Type = "oneshot";
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wantedBy = [ "initrd-root-fs.target" ];
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before = [ "sysroot.mount" ];
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script = ''
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ln -sf /dev/console /dev/tty
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until ${pkgs.iputils}/bin/ping -c 1 hydra.forkos.org; do sleep 1; done
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${pkgs.u-root}/bin/pxeboot -v -ipv4=false -file https://hydra.forkos.org/job/infra/main/${node.config.networking.hostName}/latest/download-by-type/file/ipxe
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'';
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};
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boot.initrd.systemd.contents."/etc/ssl/certs/ca-certificates.crt".source = "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt";
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boot.initrd.services.resolved.enable = false;
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boot.initrd.systemd.contents."/etc/resolv.conf".text = ''
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nameserver 2001:4860:4860::6464
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'';
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boot.initrd.systemd.contents."/etc/systemd/journald.conf".text = ''
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[Journal]
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ForwardToConsole=yes
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MaxLevelConsole=debug
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'';
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# Provide a bootable USB drive image
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system.build.usbImage = pkgs.callPackage ({ stdenv, runCommand, dosfstools, e2fsprogs, mtools, libfaketime, util-linux, nukeReferences }:
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runCommand "boot-img-${node.config.networking.hostName}" {
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nativeBuildInputs = [ dosfstools e2fsprogs libfaketime mtools util-linux ];
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} ''
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export img=$out
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truncate -s 40M $img
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sfdisk $img <<EOF
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label: gpt
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label-id: F222513B-DED1-49FA-B591-20CE86A2FE7F
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type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B, bootable
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EOF
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# Create a FAT32 /boot/firmware partition of suitable size into firmware_part.img
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eval $(partx $img -o START,SECTORS --nr 1 --pairs)
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truncate -s $((2081 * 512 + SECTORS * 512)) firmware_part.img
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mkfs.vfat --invariant -i 2e24ec82 -n BOOT firmware_part.img
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# Populate the files intended for /boot/firmware
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mkdir -p firmware/EFI/BOOT firmware/loader/entries
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cp ${pkgs.systemd}/lib/systemd/boot/efi/systemd-boot*.efi firmware/EFI/BOOT/BOOT${lib.toUpper stdenv.hostPlatform.efiArch}.EFI
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cat > firmware/loader/loader.conf << EOF
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default foo
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EOF
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cat > firmware/loader/entries/default.conf << EOF
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title Default
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linux /EFI/${pkgs.stdenv.hostPlatform.linux-kernel.target}
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initrd /EFI/initrd
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options init=${config.system.build.toplevel}/init ${toString config.boot.kernelParams}
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EOF
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cp ${config.system.build.kernel}/${pkgs.stdenv.hostPlatform.linux-kernel.target} firmware/EFI/${pkgs.stdenv.hostPlatform.linux-kernel.target}
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cp ${config.system.build.initialRamdisk}/${config.system.boot.loader.initrdFile} firmware/EFI/initrd
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find firmware -exec touch --date=2000-01-01 {} +
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# Copy the populated /boot/firmware into the SD image
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cd firmware
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# Force a fixed order in mcopy for better determinism, and avoid file globbing
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for d in $(find . -type d -mindepth 1 | sort); do
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faketime "2000-01-01 00:00:00" mmd -i ../firmware_part.img "::/$d"
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done
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for f in $(find . -type f | sort); do
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mcopy -pvm -i ../firmware_part.img "$f" "::/$f"
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done
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cd ..
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# Verify the FAT partition before copying it.
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fsck.vfat -vn firmware_part.img
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dd conv=notrunc if=firmware_part.img of=$img seek=$START count=$SECTORS
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''
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) {};
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}
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;
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};
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# This is the config which will actually be booted
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netbootVariant = extendModules {
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modules = [
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(
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{ modulesPath, ... }:
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{
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imports = [ (modulesPath + "/installer/netboot/netboot.nix") ];
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}
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)
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];
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};
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# A derivation combining all the artifacts required for netbooting for the hydra job
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netbootDir = let
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kernelTarget = pkgs.stdenv.hostPlatform.linux-kernel.target;
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build = config.system.build.netbootVariant.config.system.build;
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in
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pkgs.symlinkJoin {
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name = "netboot";
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paths = [
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build.netbootRamdisk
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build.kernel
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build.netbootIpxeScript
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];
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postBuild = ''
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mkdir -p $out/nix-support
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echo "file ${kernelTarget} $out/${kernelTarget}" >> $out/nix-support/hydra-build-products
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echo "file initrd $out/initrd" >> $out/nix-support/hydra-build-products
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echo "file ipxe $out/netboot.ipxe" >> $out/nix-support/hydra-build-products
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'';
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preferLocalBuild = true;
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};
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};
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};
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}
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