feat(boot.tar): initial commit
This commit is contained in:
parent
f91ae88876
commit
d0148fd26f
176
boot-tar.go
Normal file
176
boot-tar.go
Normal file
@ -0,0 +1,176 @@
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package main
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import (
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"archive/tar"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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)
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func rmTempFile(f *os.File) {
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f.Close()
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if err := os.Remove(f.Name()); err != nil {
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log.Print("failed to remove ", f.Name(), ": ", err)
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}
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}
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func buildBootTar(out io.Writer, ctx *renderContext) (err error) {
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grubCfg, err := ioutil.TempFile(os.TempDir(), "grub.cfg-")
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if err != nil {
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return
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}
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defer rmTempFile(grubCfg)
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_, err = grubCfg.WriteString(`
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search --no-floppy --set=root --part-label boot
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insmod all_video
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set timeout=3
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set bootdev=PARTNAME=boot
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menuentry "Direktil" {
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linux /current/vmlinuz direktil.boot=$bootdev
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initrd /current/initrd
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}
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`)
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if err != nil {
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return
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}
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grubCfg.Close()
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// FIXME including in grub memdisk for now...
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kernelPath, err := ctx.distFetch("kernels", ctx.Group.Kernel)
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initrdPath, err := ctx.distFetch("initrd", ctx.Group.Initrd)
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grubMk := func(format string) ([]byte, error) {
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grubOut, err := ioutil.TempFile(os.TempDir(), "grub.img-")
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if err != nil {
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return nil, err
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}
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defer rmTempFile(grubOut)
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if err := grubOut.Close(); err != nil {
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return nil, err
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}
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cmd := exec.Command("grub-mkstandalone",
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"--format="+format,
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"--output="+grubOut.Name(),
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"boot/grub/grub.cfg="+grubCfg.Name(),
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"current/vmlinuz="+kernelPath,
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"current/initrd="+initrdPath,
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)
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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if err := cmd.Run(); err != nil {
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return nil, err
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}
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return ioutil.ReadFile(grubOut.Name())
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}
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arch := tar.NewWriter(out)
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defer arch.Close()
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archAdd := func(path string, ba []byte) (err error) {
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err = arch.WriteHeader(&tar.Header{Name: path, Size: int64(len(ba))})
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if err != nil {
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return
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}
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_, err = arch.Write(ba)
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return
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}
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ba, err := grubMk("x86_64-efi")
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if err != nil {
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return err
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}
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err = archAdd("EFI/boot/bootx64.efi", ba)
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if err != nil {
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return
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}
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if false {
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// TODO
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ba, err = grubMk("i386-pc")
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if err != nil {
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return err
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}
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arch.WriteHeader(&tar.Header{
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Name: "grub.img",
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Size: int64(len(ba)),
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})
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arch.Write(ba)
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}
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// config
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cfgBytes, cfg, err := ctx.Config()
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if err != nil {
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return err
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}
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archAdd("config.yaml", cfgBytes)
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// kernel and initrd
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type distCopy struct {
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Src []string
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Dst string
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}
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copies := []distCopy{
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// XXX {Src: []string{"kernels", ctx.Group.Kernel}, Dst: "current/vmlinuz"},
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// XXX {Src: []string{"initrd", ctx.Group.Initrd}, Dst: "current/initrd"},
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}
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// layers
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for _, layer := range cfg.Layers {
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layerVersion := ctx.Group.Versions[layer]
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if layerVersion == "" {
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return fmt.Errorf("layer %q not mapped to a version", layer)
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}
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copies = append(copies,
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distCopy{
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Src: []string{"layers", layer, layerVersion},
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Dst: filepath.Join("current", "layers", layer+".fs"),
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})
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}
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for _, copy := range copies {
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outPath, err := ctx.distFetch(copy.Src...)
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if err != nil {
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return err
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}
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f, err := os.Open(outPath)
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if err != nil {
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return err
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}
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defer f.Close()
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stat, err := f.Stat()
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if err != nil {
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return err
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}
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if err = arch.WriteHeader(&tar.Header{
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Name: copy.Dst,
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Size: stat.Size(),
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}); err != nil {
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return err
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}
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_, err = io.Copy(arch, f)
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if err != nil {
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return err
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}
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}
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return nil
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}
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@ -31,7 +31,10 @@ func cleanCAS() error {
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activeTags := make([]string, len(cfg.Hosts))
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for i, host := range cfg.Hosts {
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ctx := newRenderContext(host, cfg)
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ctx, err := newRenderContext(host, cfg)
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if err != nil {
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return err
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}
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tag, err := ctx.Tag()
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if err != nil {
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19
http.go
19
http.go
@ -93,12 +93,7 @@ func serveHosts(w http.ResponseWriter, r *http.Request) {
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return
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}
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hostNames := make([]string, len(cfg.Hosts))
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for i, host := range cfg.Hosts {
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hostNames[i] = host.Name
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}
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renderJSON(w, hostNames)
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renderJSON(w, cfg.Hosts)
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}
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func serveHost(w http.ResponseWriter, r *http.Request) {
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@ -137,7 +132,12 @@ func serveHost(w http.ResponseWriter, r *http.Request) {
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}
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func renderHost(w http.ResponseWriter, r *http.Request, what string, host *clustersconfig.Host, cfg *clustersconfig.Config) {
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ctx := newRenderContext(host, cfg)
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ctx, err := newRenderContext(host, cfg)
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if err != nil {
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log.Printf("host %s: %s: failed to render: %v", what, host.Name, err)
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http.Error(w, "", http.StatusServiceUnavailable)
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return
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}
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switch what {
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case "ipxe":
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@ -148,8 +148,6 @@ func renderHost(w http.ResponseWriter, r *http.Request, what string, host *clust
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w.Header().Set("Content-Type", "application/octet-stream")
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}
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var err error
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switch what {
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case "ipxe":
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err = renderIPXE(w, ctx)
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@ -163,6 +161,9 @@ func renderHost(w http.ResponseWriter, r *http.Request, what string, host *clust
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case "boot.iso":
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err = renderCtx(w, r, ctx, "boot.iso", buildBootISO)
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case "boot.tar":
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err = renderCtx(w, r, ctx, "boot.tar", buildBootTar)
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case "config":
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err = renderConfig(w, r, ctx)
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37
install-on-metal.sh
Executable file
37
install-on-metal.sh
Executable file
@ -0,0 +1,37 @@
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#! /bin/sh
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if [ $# -ne 2 ]; then
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echo "USAGE: $0 <device> <tar url>"
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fi
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dev=$1
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tar_url=$2
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: ${MP:=/mnt}
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set -ex
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[[ $dev =~ nvme ]] &&
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devp=${dev}p ||
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devp=${dev}
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vgdisplay storage || {
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sgdisk --clear $dev
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sgdisk \
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--new=0:4096:+2G --typecode=0:EF00 -c 0:boot \
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--new=0:0:+2M --typecode=0:EF02 -c 0:BIOS-BOOT \
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--new=0:0:0 --typecode=0:FFFF -c 0:data \
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--hybrid=1:2 \
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--print $dev
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mkfs.vfat -n DKLBOOT ${devp}1
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pvcreate ${devp}3
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vgcreate storage ${devp}3
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}
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while umount $MP; do true; done
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mount -t vfat ${devp}1 $MP
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curl $tar_url |tar xv -C $MP
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umount $MP
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@ -30,9 +30,16 @@ type renderContext struct {
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clusterConfig *clustersconfig.Config
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}
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func newRenderContext(host *clustersconfig.Host, cfg *clustersconfig.Config) *renderContext {
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group := cfg.Group(host.Group)
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func newRenderContext(host *clustersconfig.Host, cfg *clustersconfig.Config) (*renderContext, error) {
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cluster := cfg.Cluster(host.Cluster)
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if cluster == nil {
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return nil, fmt.Errorf("no cluster named %q", host.Cluster)
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}
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group := cfg.Group(host.Group)
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if group == nil {
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return nil, fmt.Errorf("no group named %q", host.Group)
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}
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vars := make(map[string]interface{})
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@ -55,7 +62,7 @@ func newRenderContext(host *clustersconfig.Host, cfg *clustersconfig.Config) *re
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StaticPodsTemplate: cfg.StaticPodsTemplate(group.StaticPods),
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clusterConfig: cfg,
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}
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}, nil
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}
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func (ctx *renderContext) Config() (ba []byte, cfg *config.Config, err error) {
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