Multi-Cluster Kubernetes with Polycrate: Why One Cluster, One Workspace
Multi-Cluster Kubernetes with Polycrate: One Workspace per Cluster, Shared Blocks via Registry
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Discover our latest articles about cloud-native technologies, Kubernetes, DevOps, and modern software development. From practical tutorials to in-depth analyses.
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Stay up to date with our latest articles about cloud-native technologies, Kubernetes, and DevOps.
1219 posts
Creating Your Own Kubernetes App as a Polycrate Block: A Step-by-Step Guide
Build your own Kubernetes app as a reusable Polycrate block
Deploy Kubernetes Apps from the PolyHub: From Idea to Deployment in Minutes
Deploy Kubernetes apps from the PolyHub: leverage official ayedo blocks
Automating Azure Infrastructure with Polycrate: VMs, Resource Groups, and Networking
Automate Azure infrastructure: VMs, Resource Groups, and Networking with Polycrate and Ansible
Automating Azure Entra ID: Users, Groups, and Apps with Ansible
Automate Azure Entra ID: Users, Groups, and App Registrations with Ansible and Polycrate
Hybrid Automation: Windows and Linux in the Same Polycrate Workspace
Hybrid Infrastructure: Managing Windows and Linux in the Same Polycrate Workspace
Breaking Free from Vendor Lock-in: Strategies for a Sovereign Cloud Migration
Migrating from centralized hyperscaler platforms to modern decentralized architectural approaches requires precise planning and execution. Best practices include a thorough analysis of the existing infrastructure, selecting appropriate tools and techniques, and comprehensive team training. Key pitfalls include inadequate data migration, lack of testing, and ignoring security aspects. Companies that proactively address these challenges can successfully reduce dependencies and significantly optimize their cloud migration.
Security Aspects in Modern Cloud Architectures: An Integrative Approach
Security in cloud architectures is a critical factor for companies utilizing digital technologies. Growing demands for compliance, data integrity, and risk management pose significant challenges for integrators. This article highlights the key security aspects companies must consider to ensure the safety of their cloud environments. By adopting an integrative approach that combines technological and organizational measures, companies can develop effective security strategies to address the highly dynamic threats in the cloud.
Optimizing Infrastructure with Declarative Operating Models
Declarative operating models provide companies with an effective method for automating and standardizing complex infrastructure management processes. Compared to centralized hyperscalers, they offer greater flexibility, robustness, and digital sovereignty. By focusing on describing the desired state rather than implementation details, efficiency is increased, and compliance requirements can be better met. Companies benefit not only from cost reductions but also from improved responsiveness to changing needs.
Avoiding Vendor Lock-in: Strategies for a Flexible Cloud Architecture
Vendor lock-in is one of the central challenges companies face when using cloud services. Strategies like multi-cloud approaches, the use of open standards, and the implementation of modular architectures can help reduce dependency on providers. A well-thought-out cloud migration and the use of container technologies further support the flexibility and agility of IT environments. Companies must make a conscious decision about their cloud strategy to avoid long-term dependencies and ensure control over their data and applications.
The Role of Cloud Architectures in Europe's Digital Sovereignty
Modern cloud architectures play a crucial role in Europe's digital sovereignty. By gaining independence from hyperscalers and establishing European data sovereignty, companies can better control their data and ensure EU compliance. In this context, tailored architectures are necessary to address challenges such as data security, scalability, and regulatory compliance. Successful implementations demonstrate how a sovereign digital infrastructure can be designed.
Windows Software Deployment without SCCM: Chocolatey and Ansible
Windows Software Deployment without SCCM: Chocolatey and Ansible with Polycrate
Automating Active Directory: Users, Groups, and OUs with Ansible
Automating Active Directory: Users, Groups, and OUs with Ansible and Polycrate
Why Europe Doesn't Need Hyperscalers
For years, the European cloud debate has been dominated by a seemingly simple question:\n**Does Europe need its own hyperscalers?**
Sovereign Cloud Instead of Hyperscaler Ecosystem:
Over the past decade, the cloud has evolved into the central infrastructure of the digital economy. Applications, data platforms, development environments, and increasingly AI systems are predominantly operated on a few global platforms today.
The Exit Test:
Many IT strategies begin with the same question: Which platform offers us the best opportunities today? Performance, scalability, pricing structure, and available services are at the forefront. This perspective is understandable – after all, the initial goal is to build a functioning infrastructure.
Redis: The Reference Architecture for In-Memory Performance & Caching (Without the Cloud Tax)
Milliseconds determine conversion rates and user experience. If every database query has to be read from the disk, the application will collapse under load. Redis is the "adrenaline" for modern web architectures: An in-memory data store that delivers sub-millisecond latencies. However, managed services like AWS ElastiCache charge astronomical premiums for this RAM access. Running Redis (or its open-source forks like Valkey) as a native Kubernetes workload in your own cluster provides full high-performance directly next to your application – with maximum cost efficiency and without vendor lock-in.
OSRM: The Reference Architecture for Lightning-Fast Routing & Logistics Without API Costs
For logistics companies, delivery services, and fleet managers, routing is the heart of the business. However, using the Google Maps Directions API for every route calculation or distance matrix burns capital significantly. API costs scale linearly with success, and sending live locations to US servers poses GDPR risks. OSRM (Open Source Routing Machine) ends this dependency. It is a C++-based high-performance routing engine that uses OpenStreetMap data. Operated in your own cluster, OSRM calculates thousands of routes per second at a fixed infrastructure price – absolutely sovereign and lightning fast.
OpenSearch: The Reference Architecture for Sovereign Search Engines & Log Analytics (100% Open Source)
For a long time, Elasticsearch was the undisputed standard for log analytics and full-text search. But then Elastic changed its license, effectively excluding the open-source community to block cloud providers. OpenSearch (managed by the Linux Foundation, initiated by AWS) is the answer: A true, Apache-2.0 licensed fork that keeps the original vision alive. Running OpenSearch in your own cluster not only provides a blazing-fast search engine but also all enterprise features (Security, Alerting, Vector Search) that would be costly with Elastic—while maintaining full data sovereignty.
Ollama: The Reference Architecture for Sovereign, Private Large Language Models (LLMs)
Artificial Intelligence (AI) is the new standard, but using cloud APIs like OpenAI (ChatGPT) or Anthropic comes with a significant catch: data privacy and "data gravity." Sending sensitive company data, source code, or customer information to US servers is often a GDPR nightmare and a strategic risk. Ollama changes the game. It is an extremely lightweight engine to run powerful open-source models (like Meta's Llama 3, Mistral, or Gemma) directly in your own cluster. By using Ollama, you get the full power of generative AI—without a single byte leaving your network.
Nominatim: The Reference Architecture for Sovereign Geocoding (OpenStreetMap)
Every online shop, logistics app, and fleet management system requires geocoding: the conversion of addresses into coordinates (and vice versa). Blindly using the Google Maps API for this leads to a double trap: exponentially increasing costs ("pay-per-request") and massive GDPR risks, as location data flows to US servers. Nominatim is the open-source search engine for OpenStreetMap (OSM) data. When operated in your own cluster, it transforms geocoding from an expensive, limited API into an internal microservice – with unlimited queries, millisecond latency, and absolute data sovereignty.
The Next Lock-in Trap is Called AI:
Artificial intelligence is currently transforming not only products, processes, and business models but also the structure of digital dependencies. While many companies are still grappling with understanding traditional cloud lock-in risks, a new form of technological dependency is emerging—deeper, more complex, and harder to dissolve in the long term.
Compliance-by-Design Instead of Audit Theater:
Few topics are currently causing as much turmoil in IT as new regulatory requirements. GDPR, NIS-2, DORA, Cyber Resilience Act, or Data Act expand the framework within which digital systems must operate. For many companies, this development initially seems like an additional burden. New documentation requirements, additional audits, new processes—all of this seems to hinder innovation.
Why Hetzner is the Strategically Smarter Cloud for Many Workloads
For years, the cloud debate has been dominated by a simple narrative: those who want to run modern software cannot bypass the major hyperscalers. Their platforms are considered indispensable, their range of functions the benchmark for the entire industry. For many companies, the decision seems to be made before it is even posed.