Hostname aus /etc/hostname des Hosts statt Container-ID, veth-Schnittstellen ausblenden

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/collector.py

@@ -205,6 +205,12 @@ def _cpu_mhz() -> float | None:
     return round(sum(freqs) / len(freqs)) if freqs else None
 
 
+def _hostname() -> str | None:
+    # /proc/sys/kernel/hostname liefert im Container dessen ID (eigener UTS-Namespace),
+    # daher zuerst die Datei des Hosts
+    return _read_or(_host_path("/etc/hostname")) or _read_or(f"{HOST_PROC}/sys/kernel/hostname")
+
+
 def _os_name() -> str | None:
     for path in (_host_path("/etc/os-release"), _host_path("/usr/lib/os-release")):
         text = _read_or(path)
@@ -242,7 +248,8 @@ def snapshot(prev: dict, cur: dict, interval: int) -> dict:
 
     net, rx_sum, tx_sum = [], 0, 0
     for name, (rx, tx) in sorted(cur["net"].items()):
-        if name == "lo":
+        # veth*: eine pro Container mit Zufallsnamen – nur Rauschen in der Liste
+        if name == "lo" or name.startswith("veth"):
             continue
         p_rx, p_tx = prev["net"].get(name, (rx, tx))
         rx_rate, tx_rate = _rate(rx, p_rx, seconds), _rate(tx, p_tx, seconds)
@@ -268,7 +275,7 @@ def snapshot(prev: dict, cur: dict, interval: int) -> dict:
         "timestamp": datetime.now().astimezone().isoformat(timespec="seconds"),
         "intervalSeconds": interval,
         "host": {
-            "hostname": _read_or(f"{HOST_PROC}/sys/kernel/hostname"),
+            "hostname": _hostname(),
             "os": _os_name(),
             "kernel": _read_or(f"{HOST_PROC}/sys/kernel/osrelease"),
             "uptimeSeconds": int(uptime),