GitOps has revolutionized how teams deploy and manage applications in Kubernetes environments, providing declarative configuration management with Git as the single source of truth. When combined with a lightweight k3s cluster, Flux v2, encrypted secrets management through SOPS/age, and modern…
Introduction Building a production-ready Retrieval-Augmented Generation (RAG) system requires careful orchestration of multiple components working seamlessly together. RAG combines the power of large language models with external knowledge bases to provide contextually accurate responses. This comprehensive tutorial will guide you…
Exposing services from behind NAT or firewalls has become increasingly complex as applications scale and security requirements grow. In 2025, three primary solutions dominate the landscape: Tailscale Funnel, Cloudflare Tunnel, and traditional Nginx reverse proxy deployments on VPS infrastructure. Each…
Modern applications require comprehensive observability to maintain optimal performance and reliability. This tutorial demonstrates how to deploy a complete observability stack using OpenTelemetry Collector, Prometheus, Loki, Tempo, and Grafana on Ubuntu 24.04 LTS. You’ll learn to collect metrics, logs, and…
When deploying persistent storage solutions for k3s clusters on VPS infrastructure in 2025, three primary options dominate the landscape: Longhorn, OpenEBS, and Rook-Ceph. Each solution offers unique advantages in terms of distributed storage capabilities, performance characteristics, and operational complexity. This…
Introduction As privacy concerns continue to grow in the digital landscape, Encrypted Client Hello (ECH) emerges as a critical technology for protecting user privacy during TLS handshakes. ECH encrypts the Server Name Indication (SNI) field, preventing network observers from seeing…
Building a robust, highly available PostgreSQL cluster is crucial for production applications that demand zero downtime and data consistency. This comprehensive tutorial will guide you through deploying a three-node PostgreSQL 16 cluster using Patroni for automated failover, etcd for distributed…
Introduction Building a highly available object storage solution requires distributed storage that can survive node failures while maintaining data integrity. MinIO provides enterprise-grade object storage with S3 compatibility, making it an excellent self-hosted alternative to cloud storage services. In this…
Introduction When protecting critical data on your VPS infrastructure, choosing the right backup solution can make the difference between a minor inconvenience and a catastrophic data loss. As we enter 2025, three standout backup solutions dominate the landscape: Restic, BorgBackup,…
Object storage has become the backbone of modern data management, especially for VPS backup strategies. As we enter 2025, the landscape offers compelling alternatives to traditional cloud storage solutions, each with distinct advantages in pricing, performance, and compatibility. In this…
