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coolvds.com › Blog › DevOps & Infrastructure

Beyond Nagios: Why 'Green' Dashboards Hide System Failure (And How to Fix It)

· CoolVDS Team

Your server responds to ping, but your customers are seeing timeouts. This 2016 guide moves beyond simple 'up/down' monitoring into deep metric aggregation using ELK and StatsD, ensuring your infrastructure is actually performing, not just existing.

coolvds.com › Blog › DevOps & Infrastructure

Stop Bleeding Money: A Pragmatic Guide to Hosting TCO in 2016

· CoolVDS Team

Cloud elasticity is often a pricing trap. We analyze how moving from public cloud giants to high-performance KVM instances like CoolVDS, combined with PHP 7 and Nginx tuning, can slash hosting costs by 40% while satisfying Norwegian data residency requirements.

coolvds.com › Blog › Database Management

Zero-Downtime Database Migration: A Battle Plan for Norwegian Systems

· CoolVDS Team

Migrating live production databases without killing your SLA requires military precision. Here is the exact replication strategy and my.cnf tuning we use to move heavy I/O workloads across the Nordic infrastructure.

coolvds.com › Blog › Security & Compliance

LXC & Docker Security in 2014: Don't Let Your Container Break Out

· CoolVDS Team

Containerization is exploding, but the shared kernel model exposes risks. We dissect namespaces, cgroups, and why wrapping your containers in a KVM VPS is the only sane choice for production.

coolvds.com › Blog › Security & Compliance

Kill the Perimeter: Implementing a Zero-Trust Architecture on Linux in 2014

· CoolVDS Team

The traditional firewall is dead. In the wake of recent high-profile breaches, the "castle and moat" strategy is obsolete. Learn how to implement a Zero-Trust model using strict iptables, SSH hardening, and encrypted tunnels on your VPS.

coolvds.com › Blog › Tutorials & Guides

Secure Your Traffic: Deploying OpenVPN on Ubuntu 12.04 LTS

· CoolVDS Team

Public WiFi is a security minefield. Learn how to deploy a hardened OpenVPN server on Ubuntu 12.04 with 2048-bit encryption, iptables masquerading, and optimized routing for Nordic low-latency connections.