Warehouse Network Skill

Warehouse Network

Manage SSH connections to machines on the warehouse network, with Tailscale as the cross-network fallback.

Hosts

| Host | Local IP | Tailscale IP | User | Password | |------|----------|-------------|------|----------| | gx10-acee (DGX Spark) | 10.1.10.153 | 100.74.215.96 | a | aaaaaa |

Connection Strategy

Same network: SSH directly via local IP (10.1.10.x)
Different networks: SSH via Tailscale IP (100.x.x.x)
If Tailscale is offline/expired: Must access via local network first, then run sudo tailscale up --force-reauth

Quick Connect

# Try Tailscale first (works across networks)
ssh a@100.74.215.96

# Fall back to local
ssh a@10.1.10.153

Connection Workflow

# 1. Check if host is on Tailscale
tailscale status | grep gx10

# 2. If online (no "offline" tag), ping to verify
tailscale ping --timeout=10s gx10-acee

# 3. If offline or node key expired, SSH via local network and re-auth
ssh a@10.1.10.153
sudo tailscale up --force-reauth
# Visit the printed auth URL in browser

# 4. Connect via Tailscale once authenticated
ssh a@100.74.215.96

Discovering New Hosts

If a host IP is uncertain, probe a range:

for ip in 10.1.10.{150..155}; do
  ssh -o ConnectTimeout=5 -o BatchMode=yes a@$ip "echo $ip ok" 2>&1 &
done; wait

Notes

DGX Spark runs Ubuntu (aarch64), NVIDIA DGX Spark Version 7.4.0
The machine has a (spark-ai-env) conda/venv activated by default
Tailscale node keys can expire; re-auth with --force-reauth
sudo password is the same as the login password

Agent Skills: Warehouse Network

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