145 lines
3.0 KiB
Markdown
145 lines
3.0 KiB
Markdown
# N8N SSH Setup - Run validate-settings.sh
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## Overview
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Use n8n's SSH node to run the validation script on localhost.
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## Prerequisites
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✅ SSH is running on localhost (confirmed)
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✅ User `garfield` exists
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## Setup Steps
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### 1. Create SSH Key for n8n (Recommended)
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```bash
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# Generate SSH key (no passphrase for automation)
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ssh-keygen -t ed25519 -f ~/.ssh/n8n_key -N ""
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# Copy public key to authorized_keys
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cat ~/.ssh/n8n_key.pub >> ~/.ssh/authorized_keys
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chmod 600 ~/.ssh/authorized_keys
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# Test connection
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ssh -i ~/.ssh/n8n_key garfield@localhost "echo 'SSH works!'"
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```
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### 2. Import Workflow
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1. Open n8n: http://localhost:5678
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2. Click **"Add Workflow"**
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3. Click **"Import from File"**
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4. Select: `n8n-workflow-ssh-local.json`
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### 3. Configure SSH Credentials
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In n8n:
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1. Click the **"SSH - Run Validation"** node
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2. Click **"Create New Credential"**
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3. Choose **"SSH Password"** (or SSH Private Key if you created one)
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4. Enter:
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- **Host:** `localhost`
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- **Port:** `22`
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- **User:** `garfield`
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- **Password:** Your user password (or path to private key)
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### 4. Configure Telegram (Optional)
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1. Get bot token from @BotFather
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2. Get chat ID from @userinfobot
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3. Add Telegram credentials in n8n
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### 5. Activate
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1. Toggle **"Active"** in top-right
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2. Click **"Save"**
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## Testing
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### Manual Trigger
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Click **"Execute Workflow"** to test immediately.
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### Check Output
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The SSH node will return:
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- `stdout`: Script output
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- `code`: Exit code (0 = success, >0 = issues found)
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## Alternative: Simple HTTP Endpoint
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If SSH doesn't work, create a simple HTTP endpoint:
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### 1. Create API Script
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```bash
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sudo tee /usr/local/bin/mql-validate-api.sh << 'EOF'
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#!/bin/bash
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echo "Content-Type: application/json"
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echo ""
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cd /home/garfield/mql-trading-bots
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OUTPUT=$(./scripts/validate-settings.sh 2>&1)
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CODE=$?
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if [ $CODE -eq 0 ]; then
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echo '{"status":"ok","message":"All checks passed"}'
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else
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echo "{\"status\":\"error\",\"code\":$CODE,\"message\":\"Issues found\",\"stdout\":\"$OUTPUT\"}"
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fi
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EOF
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sudo chmod +x /usr/local/bin/mql-validate-api.sh
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```
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### 2. Setup Python HTTP Server
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```bash
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cd /home/garfield/mql-trading-bots
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python3 -m http.server 8080 &
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```
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### 3. Use HTTP Request Node
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Import: `n8n-workflow-http.json`
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## Troubleshooting
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### "Connection refused" error
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```bash
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# Check SSH is listening
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sudo systemctl status sshd
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# Check port
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netstat -tlnp | grep 22
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```
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### "Permission denied" error
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```bash
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# Check file permissions
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chmod 700 ~/.ssh
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chmod 600 ~/.ssh/authorized_keys
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```
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### Script not found
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```bash
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# Verify path
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ls -la /home/garfield/mql-trading-bots/scripts/validate-settings.sh
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```
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## Security Notes
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- Use SSH keys instead of passwords when possible
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- Restrict n8n key to only run validation script in `~/.ssh/authorized_keys`:
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```
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command="/home/garfield/mql-trading-bots/scripts/validate-settings.sh",no-pty,no-port-forwarding ssh-ed25519 AAAAC3... n8n@local
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```
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- Keep n8n behind firewall/VPN
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## Manual Test
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Test the script manually:
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```bash
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/home/garfield/mql-trading-bots/scripts/validate-settings.sh
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echo "Exit code: $?"
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```
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