Maidn/maidn-talos-proxmox
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fix: build talos iso without docker

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eding 2026-07-19 22:59:22 +02:00
parent d61225a9d3
commit aecbf392bc
1 changed files with 51 additions and 26 deletions
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77
terraform/scripts/stage_talos_image.py
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@ -4,10 +4,10 @@ import gzip
import json
import os
import shutil
import ssl
import subprocess
import sys
import tempfile
import ssl
import time
import urllib.error
import urllib.parse
@ -79,41 +79,66 @@ def wait_for_task(base_url, token, node, upid):
raise RuntimeError("timed out waiting for ISO download task to finish")
def detect_proxmox_iso_dir(storage):
candidates = [
Path("/var/lib/vz/template/iso"),
Path("C:/var/lib/vz/template/iso"),
]
for candidate in candidates:
if candidate.exists():
return candidate
raise RuntimeError(f"unable to find ISO directory for storage '{storage}'")
def build_custom_iso(base_url, token, node, storage, source_filename, output_filename, network_config_path):
storage_path = f"/var/lib/vz/template/iso/{source_filename}"
output_path = f"/var/lib/vz/template/iso/{output_filename}"
iso_dir = detect_proxmox_iso_dir(storage)
storage_path = iso_dir / source_filename
output_path = iso_dir / output_filename
network_config = Path(network_config_path).read_text(encoding="utf-8").strip()
installer_meta = base64.b64encode(gzip.compress(f"0xa={network_config}".encode("utf-8"), compresslevel=9)).decode("ascii")
if shutil.which("docker") is None:
raise RuntimeError("docker is required to build Talos ISO with embedded META")
xorriso = shutil.which("xorriso")
if xorriso is None:
raise RuntimeError("xorriso is required to build Talos ISO with embedded META")
with tempfile.TemporaryDirectory() as temp_dir:
temp_path = Path(temp_dir)
script_path = temp_path / "build.sh"
script_path.write_text(
"#!/bin/sh\n"
"set -eu\n"
"apk add --no-cache xorriso >/dev/null\n"
"cp /input/source.iso /work/source.iso\n"
"xorriso -indev /work/source.iso -outdev /output/result.iso -boot_image any replay \\\n"
f" -append_partition 2 0x0 /dev/null \\\n"
f" -boot_image any keep \\\n"
f" -map /input/cmdline /cmdline\n",
encoding="utf-8",
)
cmdline_path = temp_path / "cmdline"
cmdline_path.write_text(f"talos.environment=INSTALLER_META_BASE64={installer_meta}\n", encoding="utf-8")
extract_dir = temp_path / "extract"
extract_dir.mkdir()
output_tmp = temp_path / output_filename
subprocess.run([xorriso, "-osirrox", "on", "-indev", str(storage_path), "-extract", "/", str(extract_dir)], check=True)
isolinux_cfg = extract_dir / "isolinux" / "isolinux.cfg"
grub_cfg = extract_dir / "boot" / "grub" / "grub.cfg"
append = f" talos.environment=INSTALLER_META_BASE64={installer_meta}"
for cfg in (isolinux_cfg, grub_cfg):
if cfg.exists():
text = cfg.read_text(encoding="utf-8")
text = text.replace("---", f"{append} ---", 1)
cfg.write_text(text, encoding="utf-8")
subprocess.run([
"docker", "run", "--rm",
"-v", f"{script_path}:/input/build.sh:ro",
"-v", f"{cmdline_path}:/input/cmdline:ro",
"-v", f"{Path(storage_path).resolve()}:/input/source.iso:ro",
"-v", f"{temp_path}:/work",
"-v", f"{Path(output_path).resolve().parent}:/output",
"alpine:3.20", "sh", "/input/build.sh",
xorriso,
"-as", "mkisofs",
"-o", str(output_tmp),
"-isohybrid-mbr", str(extract_dir / "isolinux" / "isohdpfx.bin"),
"-c", "isolinux/boot.cat",
"-b", "isolinux/isolinux.bin",
"-no-emul-boot",
"-boot-load-size", "4",
"-boot-info-table",
"-eltorito-alt-boot",
"-e", "EFI/BOOT/BOOTX64.EFI",
"-no-emul-boot",
"-isohybrid-gpt-basdat",
"-V", "TALOS",
str(extract_dir),
], check=True)
shutil.copyfile(output_tmp, output_path)
def main():
parser = argparse.ArgumentParser()