AI Tools
How to Re-Enable Chat Hub in n8n 3.0: Restore the Chat Section After Upgrade
n8n 3.0 turns off Chat Hub by default. Re-enable it with N8N_ENABLED_MODULES, verify the Chat section returns, and plan migration before n8n 4.0 removes it.
Self-Hosted
n8n
How to Harden Self-Hosted n8n for Teams After the October 2026 Security Advisories
Harden a shared self-hosted n8n instance after the October 2026 advisories: patch to 2.44.1, scope credentials by project, and lock nodes, files, and API keys.
AI Tools
How to Self-Host OpenDuet: Install CopilotKit's Proactive AI Agent and Run Its Morning Brief
Self-host OpenDuet, CopilotKit's open-source proactive AI agent: install it with Docker and Bun, try the built-in fake Google, then connect real Gmail.
n8n
n8n Publish Guardrails Tutorial: Stop Broken Workflows Before They Go Live
Use n8n 2.43.0 publish guardrails to block workflows with unconnected required inputs, enforce CLI policies, and fix a blocked publish before production breaks.
n8n
n8n S3 Binary Data Storage: Complete Tutorial (AWS, R2, Queue Mode, Lifecycle Rules)
Move n8n binary data off RAM and disk into Amazon S3. Setup with S3-compatible R2 config, queue-mode worker sync, lifecycle pruning, and the 2.6.4 region fix.
n8n
n8n External Secrets Tutorial: Connect HashiCorp Vault and AWS Secrets Manager
Connect n8n to external secret stores with hands-on HashiCorp Vault and AWS Secrets Manager walkthroughs, $secrets expressions, and per-project vault scoping.
n8n
How to Downgrade n8n in Docker: Rollback Guide with db:revert (2026)
Downgrade n8n in Docker safely: revert database migrations with n8n db:revert on the current version first, then pin the older image tag and restart the stack.
n8n
n8n Workflow Force-Stopped After Hours? Fix Out-of-Memory Crashes with Batch Processing
n8n workflows dying after hours with no node error are usually memory kills. Diagnose the crash, then fix it with batching, execution pruning, and heap caps.
n8n
The Complete n8n Guide: Install, Build AI Agents, Scale, and Secure Your Instance
The complete n8n guide: install and self-host n8n, build AI agents, add RAG and memory, scale with queue mode, and keep your instance patched and secure.
n8n
n8n AI Agent Race Conditions: 3 Atomic Claiming Patterns
Prevent double bookings from concurrent n8n AI agents: atomic claim with INSERT ON CONFLICT, a pending/done two-phase, and re-read state before writes.