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Showing 73–81 of 188 articles

Security14 min read

Self-Host Authentik or Keycloak: Open-Source Auth0 Alternatives for SSO (2026)

Tired of per-MAU pricing from Auth0, Okta, or Clerk? Self-host Authentik or Keycloak for full-featured SSO, SAML, OIDC, LDAP, and SCIM on your own infrastructure. Complete Docker deployment guide with cost comparison, feature breakdown, and production-ready configuration on DanubeData.

Adrian Silaghi3,273 views
Security12 min read

Self-Host Vaultwarden: Free Bitwarden Alternative for Your Team (2026)

Stop paying €3-5/user/month for a password manager. Self-host Vaultwarden — the lightweight, Rust-based Bitwarden-compatible server — on a €4.49/mo DanubeData VPS and run your entire team or family vault for the cost of a coffee. Full Docker walkthrough, SMTP, Argon2, Fail2ban, S3 backups, and security hardening for 2026.

Adrian Silaghi1,639 views
Tutorials14 min read

Self-Host Mastodon and Matrix Server on VPS: The Fediverse Hosting Guide (2026)

A complete 2026 guide to self-hosting Mastodon (ActivityPub microblogging) and Matrix (Synapse/Dendrite chat) on a European VPS. Covers hardware sizing, Docker deployment, federation, moderation, media storage to S3, GDPR, and backups. Built for owners who want their own corner of the Fediverse without handing data to Big Tech.

Adrian Silaghi2,223 views
DevOps13 min read

Self-Host GitLab on VPS: Complete Setup Guide (2026)

Self-host GitLab on your own VPS for a fraction of GitHub Enterprise cost. Complete 2026 guide covering Docker install, SSL, PostgreSQL, CI/CD runners, S3 backups, and GDPR.

Adrian Silaghi2,942 views
Queues13 min read

Migrating from Amazon MQ to Managed RabbitMQ: A Complete Guide

A practical, step-by-step guide for DevOps engineers and CTOs migrating from Amazon MQ to a cost-effective, EU-hosted managed RabbitMQ. Covers federation-based zero-downtime migration, drain-and-switch, connection string management, and post-migration validation.

Adrian Silaghi1,420 views
Queues12 min read

RabbitMQ with MQTT for IoT: Building a Scalable Device Messaging Platform

Learn how to build a scalable IoT device messaging platform using RabbitMQ with MQTT. Covers MQTT QoS levels, topic mapping to AMQP exchanges, Python and Node.js code examples, handling 10K+ concurrent connections, TLS security, and EU data sovereignty compliance.

Adrian Silaghi1,817 views

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