DanubeData Blog
Stay updated with the latest news, tutorials, and insights about cloud infrastructure.
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.
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.
Self-Host Gitea or Forgejo: Lightweight GitHub Alternative on VPS (2026)
Complete 2026 guide to self-hosting Gitea or Forgejo on a VPS. Compare both forks, deploy with Docker Compose, set up Forgejo Actions runners, migrate from GitHub, and run a production-ready Git server for under €13/month.
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.
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.
GDPR-Compliant Message Queues: Why Data Residency Matters for European Companies
Message queues are a critical blind spot in GDPR compliance audits. Learn why data residency matters for message brokers, how to assess risk with US-managed services, and how to build a fully compliant event-driven architecture hosted in Europe.
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.
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.
S3 Storage as Persistent Memory for AI Coding Agents like Claude Code and Codex (2026)
Use S3-compatible object storage to persist, sync, and back up your AI coding agent memory across machines. Practical guide with rclone, s3cmd, and automation scripts for Claude Code, Codex, and other AI dev tools.
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