DigitalOcean guides.

Step-by-step guides for Debian 13 servers on DigitalOcean. Deployment, hardening, and infrastructure.

Deployment

Deploy a compiled binary on DigitalOcean Debian 13 (Trixie) with systemd

Go, Rust, or Zig binaries supervised by systemd on DigitalOcean.

Deployment

Deploy a Docker container on DigitalOcean Debian 13 (Trixie) with systemd

Run Docker containers as systemd services on DigitalOcean.

Hardening

Harden SSH on a DigitalOcean Debian 13 (Trixie) VPS

Lock down SSH on DigitalOcean Debian 13 (Trixie): admin user, key-only auth, AllowUsers, ufw, cloud firewall, and fail2ban.

Infrastructure

Install Docker on DigitalOcean Debian 13 (Trixie)

Upstream-repo Docker install on DigitalOcean Debian 13 (Trixie) with a production daemon.json, log rotation, live-restore, and ufw-docker notes.

Hardening

Set up ufw and the DigitalOcean Cloud Firewall on DigitalOcean Debian 13 (Trixie)

Layered default-deny firewall for DigitalOcean Debian 13 (Trixie): ufw at the host, DigitalOcean Cloud Firewall at the edge, rate-limiting, and the Docker gotcha.