SSH Server

SSH remote connection and operation for servers (Linux/Unix cloud servers, etc.)

SSH Server - Remote Server Management

Overview

Connect to and operate remote Linux/Unix servers via SSH.

Security Notes

⚠️ Important: Protect Sensitive Info

• Never send passwords directly in chat
• Passwords are encrypted and stored locally
• Prefer SSH key authentication

Initial Setup

1. Install Dependencies

SSH client is usually pre-installed:

• Windows: C:\Windows\System32\OpenSSH\ssh.exe (Win10/11自带)
• Linux/Mac: Terminal built-in

2. Add Server Config

Method A: Interactive Add (Recommended)

Run this in your local terminal:

bash

python D:\openClaw\openclaw\config\ssh_config.py add

Then enter:

• Server name: e.g., vps, ubuntu, digitalocean
• Server IP: xxx.xxx.xxx.xxx
• Port: 22
• Username: root, ubuntu, etc.
• Password: (hidden during input, stored securely)

Method B: SSH Key Login (More Secure)

bash

# 1. Generate local SSH key (if not exists)
ssh-keygen -t ed25519

# 2. Copy public key to server
ssh-copy-id user@your-server-ip

Connect to Server

Interactive Connect (Password)

Run in your terminal:

bash

ssh -o StrictHostKeyChecking=no user@your-server-ip

Then enter password manually.

Connect Using Config Alias

Run in your terminal:

bash

python D:\openClaw\openclaw\config\ssh_config.py connect <server-name>

System will prompt for password, then connect.

Server Operations

After connecting, you can execute:

System Status

bash

# System overview
uptime

# Memory usage
free -h

# Disk usage
df -h

# CPU info
lscpu

# Full system info
uname -a && uptime && free -h && df -h

Users and Processes

bash

# Online users
who

# Process list
ps aux

# Processes sorted by memory
ps aux --sort=-%mem

# Find specific process
ps aux | grep nginx

Network Status

bash

# Network connections
ss -tuln

# Port usage
netstat -tuln

Service Management

bash

# Check service status
systemctl status nginx

# Start service
sudo systemctl start nginx

# Stop service
sudo systemctl stop nginx

# Restart service
sudo systemctl restart nginx

Log Viewing

bash

# System logs
sudo journalctl -xe

# Last 100 lines
sudo journalctl -n 100

# Specific service logs
sudo journalctl -u nginx

# Real-time log
tail -f /var/log/syslog

Docker Operations

bash

# Running containers
docker ps

# All containers
docker ps -a

# Container logs
docker logs container_name

# Enter container
docker exec -it container_name bash

Config File

Server configs saved to D:\openClaw\openclaw\config\servers.json (passwords encrypted).

json

{
  "vps": {
    "host": "xxx.xxx.xxx.xxx",
    "port": 22,
    "username": "root",
    "key_file": null,
    "password_encrypted": "gAAAAAB..."
  }
}

Management Commands

bash

# Add server
python config/ssh_config.py add

# List servers
python config/ssh_config.py list

# Connect to server
python config/ssh_config.py connect <name>

# Delete server
python config/ssh_config.py delete <name>

Usage Flow

1. User tells AI: Want to connect to my VPS
2. AI prompts user: Run python config/ssh_config.py add in terminal
3. After user adds: AI can connect to server via config
4. Connection methods:
   • Password: User runs ssh user@IP and enters password
   • Key: Direct connect after config

Security Principles

• 🔐 Passwords not transmitted via chat
• 🔑 Prefer SSH keys
• 🛡️ Passwords encrypted locally
• ⚠️ Confirm before dangerous operations