gru/skrypty_narzedzia
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Update node_exporter_manager.py

Browse Source
This commit is contained in:
gru
2025-06-08 00:06:31 +02:00
parent fcd2120d01
commit 7872b6e1fc
1 changed files with 60 additions and 97 deletions
Download Patch File Download Diff File Expand all files Collapse all files

157
node_exporter_manager.py
View File

@ -11,7 +11,7 @@ import pwd
from pathlib import Path
import bcrypt
# Stałe ścieżki i konfiguracja
# Stałe
BIN_TARGET = '/usr/local/bin/node_exporter'
SERVICE_FILE = '/etc/systemd/system/node_exporter.service'
LOG_FILE = '/var/log/node_exporter_installer.log'
@ -20,14 +20,13 @@ USER_HOME = '/var/lib/node_exporter'
CONFIG_DIR = '/etc/node_exporter'
CONFIG_PATH = os.path.join(CONFIG_DIR, 'config.yml')
# Konfiguracja logowania
logging.basicConfig(
filename=LOG_FILE,
level=logging.INFO,
format='%(asctime)s [%(levelname)s] %(message)s'
)
# ----------------- FUNKCJE POMOCNICZE -----------------
# ------------------ FUNKCJE ------------------
def run_cmd(cmd, check=True):
try:
@ -37,6 +36,17 @@ def run_cmd(cmd, check=True):
logging.error(f"Błąd komendy: {cmd} — {e.stderr}")
raise
def detect_architecture():
arch = run_cmd(['uname', '-m'])
if arch in ['x86_64', 'amd64']:
return 'linux-amd64'
elif arch in ['aarch64', 'arm64']:
return 'linux-arm64'
elif arch.startswith('armv7') or arch.startswith('armv6'):
return 'linux-armv7'
else:
raise Exception(f"Nieobsługiwana architektura: {arch}")
def get_latest_version():
try:
r = requests.get('https://api.github.com/repos/prometheus/node_exporter/releases/latest', timeout=10)
@ -60,8 +70,6 @@ def get_local_version():
return None
def download_and_extract(url, download_path='/tmp'):
import sys
filename = os.path.join(download_path, url.split('/')[-1])
extract_dirname = filename.replace('.tar.gz', '')
extract_path = Path(extract_dirname)
@ -87,9 +95,6 @@ def download_and_extract(url, download_path='/tmp'):
return extract_path
# ----------------- INSTALACJA I KONFIGURACJA -----------------
def install_binary(extracted_dir):
src = Path(extracted_dir) / 'node_exporter'
if Path(BIN_TARGET).exists():
@ -110,7 +115,6 @@ def create_user():
home_path = Path(USER_HOME)
home_path.mkdir(parents=True, exist_ok=True)
shutil.chown(home_path, user=USER_NAME, group=USER_NAME)
logging.info(f"Utworzono katalog {USER_HOME} i przypisano właściciela.")
def setup_service():
service_content = f"""[Unit]
@ -130,36 +134,33 @@ WantedBy=default.target
"""
with open(SERVICE_FILE, 'w') as f:
f.write(service_content)
logging.info("Zapisano konfigurację usługi systemd")
run_cmd(['systemctl', 'daemon-reload'])
run_cmd(['systemctl', 'enable', '--now', 'node_exporter'])
logging.info("Włączono i uruchomiono usługę node_exporter")
def uninstall():
if Path(SERVICE_FILE).exists():
run_cmd(['systemctl', 'disable', '--now', 'node_exporter'])
os.remove(SERVICE_FILE)
logging.info("Usunięto plik usługi i zatrzymano node_exporter")
if Path(BIN_TARGET).exists():
os.remove(BIN_TARGET)
logging.info("Usunięto binarkę node_exporter")
try:
pwd.getpwnam(USER_NAME)
run_cmd(['userdel', USER_NAME])
logging.info("Usunięto użytkownika node_exporter")
except KeyError:
logging.info("Użytkownik już nie istnieje")
pass
if Path(USER_HOME).exists():
shutil.rmtree(USER_HOME)
logging.info("Usunięto katalog /var/lib/node_exporter")
def install():
if Path(BIN_TARGET).exists():
print("Node Exporter już zainstalowany. Użyj --update.")
return
arch = detect_architecture()
version, release = get_latest_version()
url = next(asset['browser_download_url'] for asset in release['assets'] if 'linux-amd64.tar.gz' in asset['browser_download_url'])
url = next(asset['browser_download_url'] for asset in release['assets'] if arch in asset['browser_download_url'])
extracted = download_and_extract(url)
install_binary(extracted)
create_user()
@ -172,10 +173,13 @@ def update():
if local_version == latest_version:
print(f"Node Exporter już aktualny ({local_version})")
return
print(f"Aktualizacja z {local_version} do {latest_version}...")
arch = detect_architecture()
run_cmd(['systemctl', 'stop', 'node_exporter'])
url = next(asset['browser_download_url'] for asset in release['assets'] if 'linux-amd64.tar.gz' in asset['browser_download_url'])
url = next(asset['browser_download_url'] for asset in release['assets'] if arch in asset['browser_download_url'])
extracted = download_and_extract(url)
install_binary(extracted)
run_cmd(['systemctl', 'start', 'node_exporter'])
@ -185,15 +189,9 @@ def setup():
source_path = Path(__file__).resolve()
target_path = Path('/usr/local/bin/node_exporter_manager.py')
if source_path == target_path:
print("ℹ️ Skrypt już działa z docelowej lokalizacji.")
elif not target_path.exists():
if source_path != target_path:
shutil.copy(source_path, target_path)
target_path.chmod(0o755)
logging.info(f"Zainstalowano skrypt jako {target_path}")
print(f"✅ Skrypt zainstalowany w {target_path}")
else:
print(f"ℹ️ Skrypt już zainstalowany w {target_path}")
cron_line = f"15 3 * * * {target_path} --update >> /var/log/node_exporter_cron.log 2>&1"
try:
@ -205,10 +203,6 @@ def setup():
f.write(cron_result.strip() + '\n' + cron_line + '\n')
run_cmd(['crontab', '/tmp/node_exporter_cron'])
os.remove('/tmp/node_exporter_cron')
logging.info("Dodano wpis do crontaba")
print("✅ Zadanie cron dodane")
else:
print("ℹ️ Wpis cron już istnieje.")
logrotate_path = '/etc/logrotate.d/node_exporter_manager'
logrotate_config = f"""{LOG_FILE} /var/log/node_exporter_cron.log {{
@ -222,42 +216,8 @@ def setup():
"""
with open(logrotate_path, 'w') as f:
f.write(logrotate_config)
logging.info("Skonfigurowano logrotate")
print(f"✅ Logrotate dodany w {logrotate_path}")
# ----------------- GŁÓWNY BLOK -----------------
if __name__ == '__main__':
if os.geteuid() != 0:
print("Ten skrypt musi być uruchomiony jako root.")
sys.exit(1)
if len(sys.argv) != 2 or sys.argv[1] not in ['--install', '--update', '--uninstall', '--setup']:
print("""
Użycie:
node_exporter_manager.py --install # Instaluje node_exporter i uruchamia usługę
node_exporter_manager.py --update # Aktualizuje node_exporter do najnowszej wersji (jeśli potrzeba)
node_exporter_manager.py --uninstall # Usuwa node_exporter, usługę, użytkownika
node_exporter_manager.py --setup # Instaluje ten skrypt do /usr/local/bin, dodaje CRON i logrotate
node_exporter_manager.py --install-secured # Instalacja z TLS + basic auth (certyfikat + config.yml)
node_exporter_manager.py --set-password=user:haslo # Zmiana hasła w config.yml
""")
sys.exit(1)
try:
{
'--install': install,
'--update': update,
'--uninstall': uninstall,
'--setup': setup
}[sys.argv[1]]()
except Exception as e:
logging.error(f"Błąd krytyczny: {e}")
print(f"Wystąpił błąd: {e}")
sys.exit(1)
# --- DODANE PONIŻEJ ---
# ------------------ ZABEZPIECZENIA ------------------
def setup_secured_config():
os.makedirs(CONFIG_DIR, exist_ok=True)
@ -324,38 +284,41 @@ def change_password(user, password):
print(f"Zmieniono hasło dla użytkownika '{user}'")
if len(sys.argv) != 2 or sys.argv[1] not in ['--install', '--update', '--uninstall', '--setup']:
print("""
Użycie:
node_exporter_manager.py --install # Instaluje node_exporter i uruchamia usługę
node_exporter_manager.py --update # Aktualizuje node_exporter do najnowszej wersji (jeśli potrzeba)
node_exporter_manager.py --uninstall # Usuwa node_exporter, usługę, użytkownika
node_exporter_manager.py --setup # Instaluje ten skrypt do /usr/local/bin, dodaje CRON i logrotate
node_exporter_manager.py --install-secured # Instalacja z TLS + basic auth (certyfikat + config.yml)
node_exporter_manager.py --set-password=user:haslo # Zmiana hasła w config.yml
""")
sys.exit(1)
# ------------------ MAIN ------------------
try:
if sys.argv[1] == '--install':
install()
elif sys.argv[1] == '--update':
update()
elif sys.argv[1] == '--uninstall':
uninstall()
elif sys.argv[1] == '--setup':
setup()
elif sys.argv[1] == '--install-secured':
install()
setup_secured_config()
elif sys.argv[1].startswith('--set-password='):
user_pass = sys.argv[1].split('=')[1]
if ":" not in user_pass:
print("Użyj formatu --set-password=user:haslo")
if __name__ == '__main__':
if os.geteuid() != 0:
print("Ten skrypt musi być uruchomiony jako root.")
sys.exit(1)
if len(sys.argv) != 2:
print("Użycie: node_exporter_manager.py --install | --update | --setup | --uninstall | --install-secured | --set-password=user:pass")
sys.exit(1)
try:
arg = sys.argv[1]
if arg == '--install':
install()
elif arg == '--update':
update()
elif arg == '--uninstall':
uninstall()
elif arg == '--setup':
setup()
elif arg == '--install-secured':
install()
setup_secured_config()
elif arg.startswith('--set-password='):
user_pass = arg.split('=')[1]
if ":" not in user_pass:
print("Użyj formatu --set-password=user:haslo")
sys.exit(1)
u, p = user_pass.split(":", 1)
change_password(u, p)
else:
print("Nieznana opcja.")
sys.exit(1)
u, p = user_pass.split(":", 1)
change_password(u, p)
except Exception as e:
logging.error(f"Błąd krytyczny: {e}")
print(f"Wystąpił błąd: {e}")
sys.exit(1)
except Exception as e:
logging.error(f"Błąd krytyczny: {e}")
print(f"Wystąpił błąd: {e}")
sys.exit(1)