Works with the AI tools you already use
Nex Postgres Multi Instance
by Nex AI
Manage multiple Postgres versions and extensions on one Linux box with a port registry and unified backups.
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See it in action
You say
I need to add a pgvector instance for a new project called 'brain-search' on my Ubuntu box. Port 5432 is already taken by my main app.
Your agent does
I've generated the postgres-multi/ package. I've assigned 'brain-search' to port 5433 (the next free port in your registry) using the docker-pgvector template.
Registry Entry added: 5433 | brain-search-db | brain-search | pgvector pg16 | docker | 2024-05-20
Run this to start: docker compose -f postgres-multi/docker-instances/docker-compose-brain-search.yml up -d
What you get
About this skill
Run Multiple Postgres Instances Peacefully
Running multiple databases on a single Linux machine often leads to port collisions, authentication headaches ("Peer authentication failed"), and backup gaps. This skill implements a battle-tested operational pattern for developers who need to host multiple isolated Postgres environments—such as pgvector, TimescaleDB, and vanilla Postgres—side-by-side without version conflicts or high managed-database bills.
What it does
The skill generates a hard-coded infrastructure folder (postgres-multi/) containing everything needed to manage your database fleet:
- Port Registry: A canonical mapping to prevent port collisions between services.
- Multi-Instance Configs: Templates for both Debian-managed clusters and Docker containers (pgvector, TimescaleDB, vanilla).
- Hardened Security: Automatic 127.0.0.1 binding and SCRAM-SHA-256 authentication setup to prevent credential-spraying.
- Unified Backups: A central shell script that iterates through your registry to perform gzipped nightly dumps with auto-pruning.
- Fix Scripts: One-shot utilities to resolve common "peer authentication" issues and check port availability.
Why use this skill?
Unlike a generic AI prompt, this skill enforces strict operational standards: it ensures every volume is app-prefixed to prevent accidental data deletion, insists on non-root app roles, and provides a documented upgrade path for when the next Postgres major version ships. It transforms a messy "db-on-a-box" setup into a professional, registry-backed database platform.
Built by Nex AI. More skills and info at nex-ai.be and slopsome.com.
How to install
Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.
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Creator
Founder of Nex AI. I build production-grade Claude Skills from systems that actually run: multi-tenant SaaS, Telegram agents, Raspberry Pi infrastructure, 3D multiplayer rooms. Every skill ships battle-tested patterns, not theory. 33+ open source skills published, commercial catalog growing.
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