144 lines
5.2 KiB
Python
144 lines
5.2 KiB
Python
import os
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import subprocess
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import pty
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import json
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import sqlite3
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import paramiko
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from fastapi import FastAPI, WebSocket, BackgroundTasks, Request, Form
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from fastapi.responses import HTMLResponse, RedirectResponse
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from fastapi.templating import Jinja2Templates
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from fastapi.staticfiles import StaticFiles
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app = FastAPI(title="Pi-Orchestrator Master")
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templates = Jinja2Templates(directory="templates")
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# Pfade & Konstanten
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SSH_KEY = os.path.expanduser("~/.ssh/id_rsa")
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DB_PATH = "cluster.db"
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# --- Datenbank Setup ---
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def init_db():
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conn = sqlite3.connect(DB_PATH)
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c = conn.cursor()
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c.execute('''CREATE TABLE IF NOT EXISTS nodes
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(id INTEGER PRIMARY KEY AUTOINCREMENT,
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name TEXT, ip TEXT UNIQUE, user TEXT, status TEXT)''')
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conn.commit()
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conn.close()
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init_db()
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def get_db():
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conn = sqlite3.connect(DB_PATH)
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conn.row_factory = sqlite3.Row
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return conn
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def ensure_ssh_key():
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if not os.path.exists(SSH_KEY):
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subprocess.run(["ssh-keygen", "-t", "rsa", "-N", "", "-f", SSH_KEY], check=True)
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# --- SSH & Command Logic ---
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def run_ssh_cmd(ip, user, cmd):
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"""Nutzt den SSH-Key (kein Passwort nötig nach Deployment)"""
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ssh = paramiko.SSHClient()
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ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
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try:
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ssh.connect(ip, username=user, key_filename=SSH_KEY, timeout=10)
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stdin, stdout, stderr = ssh.exec_command(f"sudo -n {cmd}")
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output = stdout.read().decode()
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ssh.close()
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return output
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except Exception as e:
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return f"Fehler auf {ip}: {str(e)}"
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# --- Routes ---
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@app.get("/")
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async def index(request: Request):
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conn = get_db()
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nodes = conn.execute('SELECT * FROM nodes').fetchall()
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conn.close()
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return templates.TemplateResponse("index.html", {"request": request, "nodes": nodes})
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@app.post("/add_node")
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async def add_node(name: str = Form(...), ip: str = Form(...), user: str = Form(...), password: str = Form(...), background_tasks: BackgroundTasks = None):
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# 1. In Datenbank speichern
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conn = get_db()
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try:
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conn.execute('INSERT INTO nodes (name, ip, user, status) VALUES (?, ?, ?, ?)',
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(name, ip, user, "Setup läuft..."))
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conn.commit()
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except sqlite3.IntegrityError:
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return {"error": "Node existiert bereits"}
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finally:
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conn.close()
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# 2. Key Deployment & Installation im Hintergrund starten (wird via WebSocket geloggt)
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# Da wir hier noch kein WebSocket-Objekt haben, triggern wir den Prozess
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# und der User sieht den Status im UI.
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return RedirectResponse(url="/", status_code=303)
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# --- WebSockets ---
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@app.websocket("/ws/install_logs")
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async def install_logs_endpoint(websocket: WebSocket):
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await websocket.accept()
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# Hier können wir später spezifische Setup-Prozesse streamen
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await websocket.send_text("System-Log: Bereit für Installationen...")
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@app.websocket("/ws/chat")
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async def chat_endpoint(websocket: WebSocket):
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await websocket.accept()
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while True:
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user_msg = await websocket.receive_text()
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user_msg_lower = user_msg.lower()
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conn = get_db()
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nodes = conn.execute('SELECT * FROM nodes').fetchall()
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conn.close()
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if "installiere docker" in user_msg_lower or "installiere ollama" in user_msg_lower:
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target_node = None
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for node in nodes:
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if node['name'].lower() in user_msg_lower or node['ip'] in user_msg_lower:
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target_node = node
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break
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if target_node:
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await websocket.send_text(f"🤖 Starte Installation auf {target_node['name']}...")
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# Beispiel: Docker Installation via SSH-Key
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cmd = "curl -sSL https://get.docker.com | sh"
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result = run_ssh_cmd(target_node['ip'], target_node['user'], cmd)
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await websocket.send_text(f"✅ Fertig auf {target_node['name']}: {result[:50]}...")
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else:
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await websocket.send_text("🤖 Welchen Pi meinst du? Ich kenne: " + ", ".join([n['name'] for n in nodes]))
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else:
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await websocket.send_text(f"🤖 Ich habe '{user_msg}' erhalten. Wie kann ich helfen?")
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# --- Terminal (Konzept) ---
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@app.websocket("/ws/terminal/{ip}")
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async def terminal_websocket(websocket: WebSocket, ip: str):
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await websocket.accept()
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conn = get_db()
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node = conn.execute('SELECT * FROM nodes WHERE ip = ?', (ip,)).fetchone()
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conn.close()
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if not node:
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await websocket.send_text("Node nicht gefunden.")
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await websocket.close()
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return
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# Startet SSH Prozess für das Terminal
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cmd = ["ssh", "-o", "StrictHostKeyChecking=no", f"{node['user']}@{ip}"]
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(master_fd, slave_fd) = pty.openpty()
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process = subprocess.Popen(cmd, stdin=slave_fd, stdout=slave_fd, stderr=slave_fd, text=True)
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# Hinweis: Für ein voll funktionsfähiges xterm.js Terminal müssten hier
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# master_fd und websocket in einer Schleife (select) verbunden werden.
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await websocket.send_text(f"--- Shell auf {node['name']} geöffnet ---")
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if __name__ == "__main__":
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import uvicorn
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ensure_ssh_key()
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uvicorn.run(app, host="0.0.0.0", port=8000) |