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remote-cluster-agent

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remote-cluster-agent 최신버젼 다운로드

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# Remote Cluster Agent

![Version](https://img.shields.io/badge/version-0.2.0-blue)

English | [中文](README.zh-CN.md)

> A skill for Claude Code / Codex to operate GPU clusters — edit code locally, run commands remotely with ~0.1s latency via persistent SSH agent connections.

## Install

```bash
npx skills add https://github.com/jiahao-shao1/remote-cluster-agent
```

Restart your agent after installing, then say "connect to cluster" to start. Your agent will guide you through the setup automatically on first use (nodes, paths, MCP server installation).

## Architecture

![Architecture](https://raw.githubusercontent.com/jiahao-shao1/remote-cluster-agent/main/docs/architecture.png)

> [Interactive version](docs/architecture.html) — click to toggle between Agent and Sentinel modes.

**Two execution modes** — agent mode is ~10x faster, sentinel mode is the automatic fallback:

| Mode | Latency | How it works |
|------|---------|-------------|
| **Agent mode** | ~0.1s | Persistent SSH connection → cluster-side `agent.py` → JSON-Lines protocol |
| **Sentinel mode** | ~1.5s | Per-command SSH → sentinel pattern detection → `proc.kill()` |

```
Local Machine                            GPU Cluster (no internet needed)
├── Claude Code / Codex (Read/Edit/Write)└── /path/to/project/
│   ~0.5ms per operation                     ├── training scripts
├── Mutagen real-time sync ◄──SSH──────────► code + logs
├── remote_bash MCP ──────────SSH──────────► bash commands
│   agent mode: ~0.1s                       └── agent.py (persistent)
│   sentinel fallback: ~1.5s
└── Read results locally (~20x faster)
```

### The Automation Loop

```
Edit code (local) → Mutagen syncs instantly → Run experiment (remote) → Logs sync back → Read results (local) → repeat
```

- **Code editing**: Local native tools (fast, ~0.5ms)
- **Code sync**: [Mutagen](https://mutagen.io) real-time bidirectional sync over SSH (see [MUTAGEN.md](MUTAGEN.md))
- **Remote execution**: `remote_bash` MCP tool — single MCP server, multi-node routing via `node` parameter
- **Reading results**: Local native Read tool (~20x faster than reading through remote MCP)

## Quick Start

### 1. Install the skill

For Claude Code:

```bash
npx skills add https://github.com/jiahao-shao1/remote-cluster-agent
```

For Codex:

```bash
mkdir -p ~/.codex/skills
ln -s /path/to/remote-cluster-agent ~/.codex/skills/remote-cluster-agent
```

### 2. Install the MCP server

The installer now supports both Claude Code and Codex. It auto-detects the client by default; if both are installed, use `--client` to pick one explicitly.

For Claude Code:

```bash
bash .agents/skills/remote-cluster-agent/mcp-server/setup.sh --client claude <name> "<ssh_cmd>" <remote_project_dir>

# Example: register two nodes
bash .agents/skills/remote-cluster-agent/mcp-server/setup.sh --client claude train "ssh -p 2222 gpu-node" /home/user/project
bash .agents/skills/remote-cluster-agent/mcp-server/setup.sh --client claude eval  "ssh gpu-eval" /data/project
```

For Codex:

```bash
bash .agents/skills/remote-cluster-agent/mcp-server/setup.sh --client codex <name> "<ssh_cmd>" <remote_project_dir>

# Example: register two nodes
bash .agents/skills/remote-cluster-agent/mcp-server/setup.sh --client codex train "ssh -p 2222 gpu-node" /home/user/project
bash .agents/skills/remote-cluster-agent/mcp-server/setup.sh --client codex eval  "ssh gpu-eval" /data/project
```

Auto-detect example:

```bash
bash .agents/skills/remote-cluster-agent/mcp-server/setup.sh train "ssh -p 2222 gpu-node" /home/user/project
```

Prerequisites: [uv](https://docs.astral.sh/uv/), SSH access to cluster, Claude Code or Codex CLI installed.

### 3. Deploy the cluster-side agent (optional, ~10x faster)

```bash
scp .agents/skills/remote-cluster-agent/cluster-agent/agent.py <host>:~/.mcp-agent/agent.py
```

Or let your agent do it after restart — just say "deploy agent".

Without the agent, everything still works via sentinel mode (~1.5s/command).

### 4. Restart your client

After installing, restart the client you use so it reloads the new MCP server:

- Claude Code: restart Claude Code
- Codex: restart the Codex CLI session

Then just describe what you want to do on the cluster.

### 5. Set up Mutagen sync

```bash
bash .agents/skills/remote-cluster-agent/mutagen-setup.sh gpu-node ~/repo/my_project /home/user/my_project
```

See [MUTAGEN.md](MUTAGEN.md) for details. Mutagen works entirely over SSH — no public internet required on the cluster.

### 6. First-time interactive setup

On first use, your agent will ask you a few questions (SSH endpoints, paths, sync methods, safety rules) and generate your personal `reference/context.local.md`. This file is gitignored — your config stays private.

## How It Works

### Agent Mode (fast, ~0.1s)

```
MCP Server                          Cluster Node
┌──────────┐   SSH long connection  ┌────────────┐
│ AgentConn│── stdin: JSON req ───→│ agent.py   │
│ Pool     │←─ stdout: JSON resp ──│ subprocess │
│ (per     │                       │ .run(cmd)  │
│  node)   │                       └────────────┘
└──────────┘
```

One SSH connection per node, kept alive with `ServerAliveInterval`. Commands sent as JSON-Lines, results returned immediately.

### Sentinel Mode (fallback, ~1.5s)

```
remote_bash("nvidia-smi")

→ ssh -tt gpu-node 'nvidia-smi 2>&1; echo "___MCP_EXIT_${?}___"'

stdout:
  | NVIDIA H100 ...
  ___MCP_EXIT_0___     ← sentinel detected

→ proc.kill()          ← force-kill SSH (proxy won't close it)
→ return clean output
```

Used automatically when the agent is not available.

## File Structure

```
remote-cluster-agent/
├── SKILL.md                          # Skill instructions for your agent
├── README.md                         # This file
├── README.zh-CN.md                   # Chinese version
├── .gitignore                        # Excludes context.local.md and .venv
├── cluster-agent/
│   └── agent.py                      # Cluster-side agent (zero deps, ~100 lines)
├── mcp-server/
│   ├── mcp_remote_server.py          # MCP server with agent mode + sentinel fallback
│   ├── pyproject.toml                # Dependencies: mcp>=1.25
│   ├── setup.sh                      # One-command install for Claude Code / Codex
│   └── tests/                        # Unit tests
├── mutagen-setup.sh                  # Mutagen file sync setup script
├── MUTAGEN.md                        # Mutagen sync guide
├── reference/
│   ├── context.template.md           # Configuration template
│   └── context.local.md              # Your config (gitignored, auto-generated)
└── VERSION
```

## Configuration

The skill generates a `reference/context.local.md` through interactive setup on first use, containing:
- Cluster nodes (names, SSH commands, purposes)
- Project paths and directory structure
- Shared storage safety rules
- GPU management scripts
- Mutagen sync sessions

## Acknowledgements

Heavily inspired by [claude-code-local-for-vscode](https://github.com/justimyhxu/claude-code-local-for-vscode).

Thanks to [@cherubicXN](https://github.com/cherubicXN) for the implementation of Mutagen-based local-cluster real-time sync.

## License

MIT

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