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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 In the wake of recent high-profile breaches, the "castle and moat" strategy is obsolete.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 › DevOps & Infrastructure

Beyond Green Lights: Why "Up" Status is a Lie and Metrics are the Truth

· CoolVDS Team

Nagios says your server is fine, but your customers are timing out. In 2013, binary monitoring isn't enough. Here is how to implement deep metrics collection using Graphite, StatsD, and SSD-backed infrastructure in Norway.

coolvds.com › Blog › Database Management

Zero-Downtime Database Migration: A Battle Plan for 2013

· CoolVDS Team

Migrating a live database doesn't have to be Russian Roulette. We explore Master-Slave replication, Percona XtraBackup, and hardware-level optimization to move your data without killing your uptime.

coolvds.com › Blog › DevOps & Infrastructure

Surviving the Sprawl: LXC vs. OpenVZ vs. KVM High-Availability Architectures

· CoolVDS Team

A battle-hardened look at scaling infrastructure in 2013. We tear down the differences between Linux Containers and full virtualization, optimize for SSD I/O, and explain why KVM is the only sane choice for critical workloads in Norway.

coolvds.com › Blog › Server Administration

Scaling Past the C10K Barrier: A Battle-Hardened Guide to HAProxy on CentOS 6

· CoolVDS Team

Is your single Apache server choking on traffic? Stop relying on luck. We dive deep into configuring HAProxy 1.4 for high availability, explaining why 'leastconn' beats round-robin, and how to keep your topology robust within the Norwegian infrastructure landscape.