diff --git a/app.py b/app.py
index 1496ad1..70fd72a 100644
--- a/app.py
+++ b/app.py
@@ -11,7 +11,7 @@ from fastapi.responses import JSONResponse, RedirectResponse
 from contextlib import asynccontextmanager
 
 log = logging.getLogger("butler")
-VERSION = "2.3.3"
+VERSION = "2.3.5"
 
 API_DIR = os.environ.get("API_KEY_DIR", "/data/api")
 VAULT_CACHE_DIR = os.environ.get("VAULT_CACHE_DIR", "/data/vault-cache")
@@ -1209,15 +1209,15 @@ SYSCTL_AUDIT_KEYS = (
 
 
 def _sysctl_audit_command() -> str:
-    script = f'''import glob, json, subprocess
+    script = f'''import glob, json
+from pathlib import Path
 keys = {SYSCTL_AUDIT_KEYS!r}
 live, errors = {{}}, {{}}
 for key in keys:
-    result = subprocess.run(["sysctl", "-n", key], capture_output=True, text=True)
-    if result.returncode == 0:
-        live[key] = result.stdout.strip()
-    else:
-        errors[key] = result.stderr.strip()[:160]
+    try:
+        live[key] = Path("/proc/sys/" + key.replace(".", "/")).read_text().strip()
+    except OSError as exc:
+        errors[key] = str(exc)[:160]
 persistent = {{}}
 for path in ["/etc/sysctl.conf", *sorted(glob.glob("/etc/sysctl.d/*.conf"))]:
     try:
@@ -1250,7 +1250,7 @@ async def system_sysctl_audit(host: str, _=Depends(_verify)):
         target = f'{inventory["user"]}@{inventory["ip"]}'
     rc, out, err = await asyncio.to_thread(_ssh, target, _sysctl_audit_command(), 30)
     if rc != 0:
-        raise HTTPException(502, (err or out).strip()[:300] or "sysctl audit failed")
+        raise HTTPException(502, (err or out).strip()[-500:] or "sysctl audit failed")
     try:
         result = json.loads(out)
     except json.JSONDecodeError as exc:
@@ -1567,10 +1567,47 @@ print("updated" if updated else "added")'''
 async def ansible_run(request: Request, _=Depends(_verify)):
     body = await request.json()
     hostname = body.get("limit", body.get("hostname", ""))
-    template_id = body.get("template_id", 10)
     if not hostname:
         return JSONResponse({"error": "limit/hostname required"}, status_code=400)
-    rc, out, err = _ssh(AUTOMATION1, f"cd /app-config/ansible && bash pfannkuchen.sh setup {hostname}", timeout=600)
+    action = body.get("action", "setup")
+    if action not in {"setup", "tune", "pvetune"}:
+        return JSONResponse({"error": "action must be setup, tune or pvetune"}, status_code=400)
+    if not re.fullmatch(r"[a-zA-Z0-9_.:-]+", hostname):
+        return JSONResponse({"error": "invalid hostname/limit"}, status_code=400)
+    if action in {"tune", "pvetune"}:
+        approved_files = (
+            "roles/sysctl/defaults/main.yml",
+            "roles/sysctl/tasks/main.yml",
+            "group_vars/vps/sysctl.yml",
+            "sysctl-proxmox.yaml",
+            "roles/sysctl_proxmox/tasks/main.yml",
+        )
+        file_sync = " && ".join(
+            f"git show origin/master:{path} > {path}" for path in approved_files
+        )
+        command = (
+            "cd /app-config/ansible && "
+            "git fetch origin master && "
+            f"{file_sync} && "
+            f"bash pfannkuchen.sh {action} {hostname}"
+        )
+    else:
+        command = (
+            "cd /app-config/ansible && "
+            "git pull --ff-only origin master && "
+            f"bash pfannkuchen.sh {action} {hostname}"
+        )
+    rc, out, err = _ssh(AUTOMATION1, command, timeout=600)
+    _audit("/ansible/run", "POST", 200 if rc == 0 else 502, f"{action} {hostname}")
+    if action != "setup":
+        return {
+            "status": "ok" if rc == 0 else "error",
+            "action": action,
+            "hostname": hostname,
+            "rc": rc,
+            "output": out[-4000:],
+            "error": err[-1000:] if rc != 0 else "",
+        }
     
     # After successful ansible run: sync Hawser token to Dockhand
     if rc == 0:
diff --git a/tests/test_app.py b/tests/test_app.py
index ba473b0..e9960d4 100644
--- a/tests/test_app.py
+++ b/tests/test_app.py
@@ -42,7 +42,7 @@ def test_health_exposes_current_version():
     with TestClient(app.app) as client:
         response = client.get("/health")
     assert response.status_code == 200
-    assert response.json()["version"] == app.VERSION == "2.3.3"
+    assert response.json()["version"] == app.VERSION == "2.3.5"
 
 
 def test_sysctl_audit_reads_fixed_keys_from_inventory_host(monkeypatch):
@@ -108,6 +108,46 @@ def test_inventory_upsert_uses_base64_script(monkeypatch):
     assert "\\nname =" not in calls[0][1]
 
 
+def test_ansible_run_supports_safe_tune_action_and_syncs_approved_files(monkeypatch):
+    calls = []
+
+    def fake_ssh(host, command, timeout=600):
+        calls.append((host, command, timeout))
+        return 0, "changed=1 failed=0", ""
+
+    monkeypatch.setattr(app, "_ssh", fake_ssh)
+    with TestClient(app.app) as client:
+        response = client.post(
+            "/ansible/run",
+            headers={"Authorization": "Bearer test-token"},
+            json={"hostname": "emby-sascha", "action": "tune"},
+        )
+    assert response.status_code == 200
+    assert response.json()["action"] == "tune"
+    assert "git fetch origin master" in calls[0][1]
+    assert "git show origin/master:roles/sysctl/tasks/main.yml" in calls[0][1]
+    assert "git pull --ff-only" not in calls[0][1]
+    assert "bash pfannkuchen.sh tune emby-sascha" in calls[0][1]
+    assert len(calls) == 1
+
+
+def test_ansible_run_rejects_unknown_action_and_shell_metacharacters(monkeypatch):
+    monkeypatch.setattr(app, "_ssh", lambda *_args, **_kwargs: (_ for _ in ()).throw(AssertionError("must not SSH")))
+    with TestClient(app.app) as client:
+        bad_action = client.post(
+            "/ansible/run",
+            headers={"Authorization": "Bearer test-token"},
+            json={"hostname": "emby-sascha", "action": "shell"},
+        )
+        bad_host = client.post(
+            "/ansible/run",
+            headers={"Authorization": "Bearer test-token"},
+            json={"hostname": "emby-sascha;id", "action": "tune"},
+        )
+    assert bad_action.status_code == 400
+    assert bad_host.status_code == 400
+
+
 def test_docker_inspect_returns_sanitized_summary(monkeypatch):
     raw = [{
         "Name": "/fileflows",