diff --git a/scripts/agent-health-check.py b/scripts/agent-health-check.py
index d59bca3..02c98b6 100755
--- a/scripts/agent-health-check.py
+++ b/scripts/agent-health-check.py
@@ -95,7 +95,7 @@ AGENTS = {
 #   .110 rtx5070 (ocu-llm VM) -> llama-server.service    (active)
 #   .15  strixhalo (amdpve)   -> strix-server.service    (active)
 GPU_HOSTS = {
-    "gpu-rtx3090 (.8)":     {"host": "192.168.68.8",   "port": 8080, "service": "llama-chat-api.service"},
+    "gpu-rtx3090 (.8)":     {"host": "192.168.68.8",   "port": 8080, "service": "llama-chat-api.service", "user": "llmuser"},
     "gpu-rtx5070 (.110)":   {"host": "192.168.68.110", "port": 8080, "service": "llama-server.service"},
     "gpu-strixhalo (.15)":  {"host": "192.168.68.15",  "port": 8080, "service": "strix-server.service"},
 }
@@ -300,13 +300,14 @@ def check_gpu_ports():
         host = gpu["host"]
         port = gpu["port"]
         svc = gpu["service"]
+        user = gpu.get("user", "root")  # default root, overridden per-host where needed
 
         # `systemctl is-active` exits non-zero when the unit is inactive or
         # missing, which the ssh() helper would swallow as an SSH failure and
         # report as UNREACHABLE. `|| true` keeps the real state word so we can
         # tell "unit inactive" from "host unreachable".
-        svc_status = ssh(host, f"systemctl is-active {svc} || true")
-        port_owner = ssh(host, f"ss -tlnp 2>/dev/null | grep -Po ':{port}\\s+.*pid=\\K[0-9]+' | head -1")
+        svc_status = ssh(host, f"systemctl is-active {svc} || true", user=user)
+        port_owner = ssh(host, f"ss -tlnp 2>/dev/null | grep -Po ':{port}\\s+.*pid=\\K[0-9]+' | head -1", user=user)
 
         if not svc_status:
             print(f"  ❌ {label}: UNREACHABLE")
@@ -317,14 +318,14 @@ def check_gpu_ports():
             print(f"  ❌ {label}: PORT {port} NOT LISTENING (svc={svc_status})")
             FAIL.append(f"gpu-no-port:{label}")
         elif svc_status != "active":
-            svc_pid = ssh(host, f"systemctl show {svc} -p MainPID 2>/dev/null | cut -d= -f2")
+            svc_pid = ssh(host, f"systemctl show {svc} -p MainPID 2>/dev/null | cut -d= -f2", user=user)
             if svc_pid and port_owner != svc_pid:
                 print(f"  ❌ {label}: GHOST PROCESS — port owned by pid {port_owner}, svc pid {svc_pid} (svc={svc_status})")
                 FAIL.append(f"gpu-ghost:{label}:{port_owner}")
             else:
                 print(f"  ⚠️  {label}: svc={svc_status}, port owned by {port_owner}")
         else:
-            health = ssh(host, f"curl -s --max-time 5 http://localhost:{port}/health")
+            health = ssh(host, f"curl -s --max-time 5 http://localhost:{port}/health", user=user)
             if health and '"status":"ok"' in health:
                 print(f"  ✅ {label}: healthy (pid={port_owner})")
             elif health and '"status":"no slot available"' in health: