Databases tutorials
Step-by-step database tutorials: run PostgreSQL in Docker for n8n, store AI agent memory in PostgreSQL, and fix PostgreSQL and MySQL after an Ubuntu upgrade.
3 tutorials
- 13 min read
How to Upgrade Ubuntu 24.04 to 26.04 LTS on a VPS
Upgrade Ubuntu 24.04 to 26.04 LTS over SSH in 10 steps: back up, install updates, open the port 1022 fallback, run do-release-upgrade, then verify services.
Read tutorial - 12 min read
How to Self-Host n8n with Docker Compose on Ubuntu 24.04
This n8n Docker Compose setup runs n8n 2.41.6 on Ubuntu 24.04 with PostgreSQL 18, an external task runner and Caddy HTTPS in 8 steps, plus updates and backups.
Read tutorial - 13 min read
How to Build an n8n AI Agent with an API Model or Ollama
Build an n8n AI agent in 9 steps: a Telegram bot with the AI Agent node, an API chat model, Postgres memory, two tools, and an optional Ollama model.
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