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coolvds.com › Blog › Tutorials & Guides

Tunneling Through the Noise: Bulletproof OpenVPN Setup on CentOS 5

· Kim Min-jun

Secure your remote connections and bypass restrictive firewalls using OpenVPN. A battle-hardened guide to setting up a secure gateway on Norwegian infrastructure, ensuring low latency and strict data privacy compliance.

coolvds.com › Blog › DevOps & Infrastructure

Stop Monitoring, Start Observing: Why Your "Green" Dashboard is Lying to You

· CoolVDS Team

Monitoring tells you the server is online. Observability tells you why the API latency spikes only during Oslo checkout hours. We break down the transition from Nagios-style checks to high-cardinality debugging with Prometheus and Loki in a post-Schrems II world.

coolvds.com › Blog › DevOps & Infrastructure

Kubernetes vs. Docker Swarm: Surviving the Orchestration Wars in 2018

· CoolVDS Team

As the GDPR deadline looms in May 2018, Nordic DevOps teams are scrambling to containerize. We benchmark Kubernetes 1.9 against Docker Swarm to see which orchestrator offers the best balance of complexity versus control on Norwegian infrastructure.

coolvds.com › Blog › Server Administration

Shared Hosting vs. VPS: Why Your "Unlimited" Plan is Suffocating Your Growth

· CoolVDS Team

Is your site crawling during peak hours? We analyze the hidden limits of shared hosting environments, from inode caps to CPU throttling, and explain why upgrading to a VPS with guaranteed RAM and SSD storage is the only viable path for professional deployment in Norway.

coolvds.com › Blog › DevOps & Infrastructure

Beyond Nagios: Why "Green Status" is a Lie and How to Debug Real Latency

· CoolVDS Team

Nagios says your server is UP, but your customers are seeing 504 Gateway Timeouts. In the wake of Heartbleed, we explore deep system introspection using Graphite, Logstash, and strace to find the bottlenecks that simple monitoring misses.

coolvds.com › Blog › Security & Compliance

Paranoia is a Virtue: The 2010 Guide to Linux Server Hardening in Norway

· CoolVDS Team

In an era of automated botnets and script kiddies, a default Linux install is a ticking time bomb. Learn the battle-tested strategies to lock down your VPS, comply with Norwegian data laws, and sleep soundly knowing your iptables are holding the line.

coolvds.com › Blog › Database Management

Database Sharding Strategies: The Nuclear Option for Scaling (And How to Survive It)

· CoolVDS Team

Sharding is complex, expensive, and dangerous. It is also the only path left when vertical scaling fails. This guide covers architectural patterns, 2021-era best practices for PostgreSQL and MySQL, and why low-latency infrastructure is non-negotiable for distributed data.

coolvds.com › Blog › DevOps & Infrastructure

Kubernetes in Production: Survival Guide for 2017

· CoolVDS Team

Moving Kubernetes from minikube to bare metal production is where the real pain begins. We cover etcd latency, NVMe requirements, and Norwegian compliance in the v1.6 era.