Technical Guide: Migrating Mastodon Instance to FreeBSD with BastilleBSD Multi-Jail Architecture
By
todsacerdoti
Sesame, salt, and substance. A flagship bake.
Summary
The article details a technical migration of the burningboard.net Mastodon instance from a Linux host to a modular FreeBSD jail-based setup using BastilleBSD. It describes a multi-jail architecture with aggressive separation of concerns, centralized PF firewalling, and a fully dual-stack network design. The author explains the design rationale, architecture decisions, and implementation approach for creating a more secure and modular Mastodon deployment on FreeBSD.
Key quotes
· 5 pulledThis post walks through the architecture and design rationale of my new multi-jail Mastodon system, with aggressive separation of concerns, centralized firewalling, and a fully dual-stack network design.
My implementation takes Stefano's article as inspiration but diverges significantly in several key areas to create a more modular and secure setup.
The core idea is to run each major Mastodon component in its own isolated jail, with network communication strictly controlled through a central PF firewall.
This multi-jail approach provides better security isolation, easier maintenance, and more flexibility for future scaling or component replacement.
The fully dual-stack network design ensures both IPv4 and IPv6 connectivity throughout the system, future-proofing the infrastructure.
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