Monitor Docker host health via SSH with GPT-4o-mini and alerts to Discord

by nXsi ✓ · 181 views · created 2026-02-20 · DevOps, AI Summarization

What this workflow does

This AI workflow has 24 nodes and runs on a schedule (cron 0 7 * * *) (plus 2 other triggers). Along the way it connects Google Sheets and OpenAI Chat Model.

How it runs

Trigger: On a schedule (cron 0 7 * * *) (plus 2 other triggers).

1. ⚙️ Configure monitoring settings (Edit Fields (Set)): sets 9 fields: discord_webhook_url, disk_warning_pct, disk_critical_pct…
2. ⚙️ Alert settings (Edit Fields (Set)): sets 5 fields: discord_webhook_url, disk_critical_pct, memory_critical_pct…
3. Create health dashboard spreadsheet (Google Sheets): work with spreadsheet
4. Collect system metrics (SSH): uses SSH
5. Quick system health check (SSH): uses SSH
6. Build dashboard layout (Code): runs custom JavaScript code
7. Collect Docker container metrics (SSH): uses SSH
8. Check against critical thresholds (Code): runs custom JavaScript code
9. Format spreadsheet as dashboard (HTTP Request): calls an HTTP API (POST)
10. Parse and normalize all metrics (Code): runs custom JavaScript code

…plus 10 more steps. See the full node list below.

Services it uses

Google SheetsOpenAI Chat Model

Before you upgrade to n8n 3.0

Nodes used (10)

• Schedule Triggern8n-nodes-base.scheduleTrigger
• Edit Fields (Set)n8n-nodes-base.set
• SSHn8n-nodes-base.ssh
• Coden8n-nodes-base.code
• Google Sheetsn8n-nodes-base.googleSheets
• Basic LLM Chain@n8n/n8n-nodes-langchain.chainLlm
• OpenAI Chat Model@n8n/n8n-nodes-langchain.lmChatOpenAi
• HTTP Requestn8n-nodes-base.httpRequest
• Ifn8n-nodes-base.if
• Manual Triggern8n-nodes-base.manualTrigger

From the author

This n8n template builds an automated health monitoring dashboard for your homelab Docker host. It SSHs into your server, collects 30+ system and container metrics, analyzes trends with AI, and delivers a structured multi-embed dashboard to Discord -- plus…

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