Step-by-Step: Self-Host Matrix 2.0 with Docker 27 and PostgreSQL 17 Matrix 2.0 is the latest iteration of the open, decentralized communication protocol, bringing improved performance, native VoIP, and better room management to self-hosted and federated deployments. Self-hosting Matrix gives you full control over your data, avoids vendor lock-in, and lets you customize your communication stack. This guide walks you through deploying Matrix 2.0 (using the Synapse reference server) with Docker 27 and PostgreSQL 17, two industry-standard tools for containerization and relational data storage. Prerequisites Before starting, ensure you have: A Linux server (Ubuntu 22.04 LTS or newer is recommended) with at least 2GB RAM, 2 CPU cores, and 20GB free storage. Docker 27 installed (we’ll cover installation below if needed). A registered domain name (e.g., matrix.example.com ) pointed to your server’s public IP via A/AAAA records. Ports 80 (HTTP), 443 (HTTPS), and 8448 (Matrix federation) open in your firewall.…