How to Self-Host n8n with Docker: Complete Installation Guide

TL;DR Self-hosting n8n with Docker gives you complete control over your workflow automation infrastructure without vendor lock-in or usage limits. This guide walks you through installing n8n using Docker Compose, configuring persistent storage, setting up SSL with Traefik or Nginx Proxy Manager, and connecting to external databases like PostgreSQL. You’ll learn how to create a production-ready n8n instance with proper environment variables, secure your installation with Let’s Encrypt certificates, and configure backup strategies using tools like Restic or Duplicati. We cover essential security practices including firewall configuration with UFW, setting up fail2ban for brute-force protection, and implementing proper authentication methods. ...

February 21, 2026 · 9 min · Local AI Ops

Using LLMs to Generate Nginx Configuration

TL;DR LLMs excel at generating Nginx configurations from natural language requirements, but require strict validation workflows. This guide demonstrates using Claude 3.5 Sonnet and GPT-4 via API to produce production-ready configs, integrated with nginx -t validation and Ansible deployment pipelines. Core workflow: Describe your requirements in structured prompts, LLM generates config, automated syntax validation, manual security review, then deploy via configuration management. This reduces configuration time from hours to minutes while maintaining safety through validation gates. ...

February 20, 2026 · 7 min · Local AI Ops

AI-Assisted Monitoring with Prometheus and LLM Alerting

TL;DR This guide demonstrates integrating LLMs (Claude 3.5 Sonnet, GPT-4) with Prometheus to transform raw metrics into intelligent, context-aware alerts. Instead of static threshold alerts, you’ll use AI to analyze metric patterns, correlate events across services, and generate actionable incident summaries with root cause analysis. Core workflow: Prometheus AlertManager webhook sends to Python middleware, which calls the LLM API, producing an enriched alert forwarded to PagerDuty/Slack. The LLM receives time-series data, recent logs, and infrastructure context to produce alerts like “CPU spike correlates with database connection pool exhaustion; recommend increasing max_connections from 100 to 200” instead of generic “CPU > 80%”. ...

February 20, 2026 · 7 min · Local AI Ops

Building an LLM-Driven Ansible Playbook Generator

TL;DR This guide demonstrates building a production-ready system that uses LLMs (Claude 3.5 Sonnet or GPT-4) to generate Ansible playbooks from natural language descriptions. You’ll create a Python-based generator that takes infrastructure requirements as input and outputs syntactically correct, idiomatic Ansible YAML with proper role structure, variables, and handlers. The core workflow: parse user intent, construct structured prompts with Ansible best practices, call the LLM API, validate generated YAML, run ansible-lint, and present for human review. We’ll use the Anthropic API with prompt caching to reduce costs on repeated generation tasks, implement JSON schema validation for playbook structure, and integrate ansible-playbook –syntax-check as a safety gate. ...

February 20, 2026 · 7 min · Local AI Ops
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