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coolvds.com › Blog › DevOps & Infrastructure

Docker 1.0, LXC, or OpenVZ? A Reality Check for Norwegian DevOps

· CoolVDS Team

Docker 1.0 has just landed, changing the conversation around virtualization. We compare the emerging container tools against battle-tested LXC and OpenVZ, and explain why KVM is the only sane foundation for your stack in 2014.

coolvds.com › Blog › Security & Compliance

Death to the Perimeter: Architecting Zero-Trust Security on Linux

· CoolVDS Team

The 'Castle and Moat' security strategy is dead. Following the Heartbleed wake-up call, we explore how to implement a Zero-Trust network model on your VPS using iptables, strict SSH key management, and internal encryption. Stop trusting your LAN.

coolvds.com › Blog › DevOps & Infrastructure

Disaster Recovery in 2014: Why RAID-10 Won't Save You When the Kernel Panics

· CoolVDS Team

It is not a matter of if your server will fail, but when. In the wake of Heartbleed and increasing data sovereignty scrutiny in Norway, this guide covers battle-tested strategies using rsync, MySQL replication, and KVM snapshots to keep your infrastructure alive.

coolvds.com › Blog › DevOps & Infrastructure

Stop Guessing, Start Measuring: A SysAdmin's Guide to APM in 2014

· CoolVDS Team

Nagios tells you the server is up. It doesn't tell you why the checkout takes 5 seconds. Here is how to implement real Application Performance Monitoring on a Linux VPS without breaking the bank.

coolvds.com › Blog › DevOps & Infrastructure

The 'No-Ops' Illusion: Architecting Decoupled Microservices on Bare-Metal KVM

· CoolVDS Team

It is June 2014. Monoliths are dying, Docker 1.0 has just landed, and the promise of 'No-Ops' is seducing CTOs. Here is why you should ignore the PaaS hype and build your own high-performance worker clusters using RabbitMQ and KVM in Norway.

coolvds.com › Blog › DevOps & Infrastructure

When RAID Fails: A Paranoiac’s Guide to Disaster Recovery in 2014

· CoolVDS Team

RAID is not a backup. In this guide, we dissect a battle-tested recovery strategy for Norwegian infrastructure using KVM, rsync, and Percona XtraBackup. Learn how to survive data loss before it happens.

coolvds.com › Blog › Performance Optimization

Latency is the Enemy: Architecting Geo-Distributed Systems in Norway (2014 Edition)

· CoolVDS Team

Physics doesn't negotiate. When 30ms makes the difference between a conversion and a bounce, hosting your application in Frankfurt while your users are in Oslo is a strategic failure. Here is how to build a high-performance edge tier using Nginx, Varnish 4.0, and local KVM infrastructure.

coolvds.com › Blog › DevOps & Infrastructure

Escaping Vendor Lock-in: A Pragmatic Hybrid Strategy for Norwegian Enterprises

· CoolVDS Team

Relying on a single US-based cloud provider is a risk to your uptime and data sovereignty. Learn how to architect a redundant, compliant infrastructure combining CoolVDS local KVM instances with public cloud bursting using HAProxy and MySQL replication.