86 lines
2.3 KiB
Python
86 lines
2.3 KiB
Python
import logging
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import os
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import random
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import socket
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import string
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import xml.etree.ElementTree as ET
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from logging.handlers import RotatingFileHandler
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from pathlib import Path
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def configure_logging():
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current_file = Path(__file__).resolve()
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sdsat_root = current_file.parent.parent
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log_dir = sdsat_root / "logs"
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log_dir.mkdir(parents=True, exist_ok=True)
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log_file = log_dir / "change_hostname.log"
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handler = RotatingFileHandler(
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str(log_file),
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maxBytes=2 * 1024 * 1024,
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backupCount=2,
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)
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formatter = logging.Formatter("%(asctime)s %(message)s")
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handler.setFormatter(formatter)
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root = logging.getLogger()
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root.setLevel(logging.INFO)
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root.handlers.clear()
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root.addHandler(handler)
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def generate_random_string(length: int) -> str:
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letters = string.ascii_lowercase
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return "".join(random.choice(letters) for _ in range(length))
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def update_config_hostname(config_path: str, new_hostname: str) -> tuple[str | None, bool]:
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"""
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Met à jour <hostname> dans le XML.
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Retourne (old_hostname, changed)
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"""
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tree = ET.parse(config_path)
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root = tree.getroot()
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old_hostname = None
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changed = False
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for elem in root.iter("hostname"):
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old_hostname = elem.text
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elem.text = new_hostname
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changed = True
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if changed:
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tree.write(config_path)
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return old_hostname, changed
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def apply_hostname(new_hostname: str) -> int:
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# Retourne le code retour de la commande
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return os.system(f"sudo hostname {new_hostname}")
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def main(
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expected_hostname: str = "sd-satxx.dtx.io",
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config_path: str = "/conf/config.xml",
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) -> None:
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configure_logging()
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host = socket.gethostname()
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logging.info(f"Hostname recupere : {host}")
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if host != expected_hostname:
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logging.info("No need to change, changed already YBT")
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return
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new_hostname = "DTX-SDSAT-" + generate_random_string(10)
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logging.info(f"New hostname is: {new_hostname}")
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old_hostname, changed = update_config_hostname(config_path, new_hostname)
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if changed:
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logging.info(f"Changed hostname from {old_hostname} to {new_hostname}")
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else:
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logging.info("No <hostname> element found in config.xml")
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rc = apply_hostname(new_hostname)
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logging.info(f"Hostname change completed successfully (rc={rc})")
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if __name__ == "__main__":
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main()
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