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coolvds.com › Blog › DevOps & Infrastructure

Escaping the Vendor Trap: A Pragmatic Multi-Provider Strategy for 2014

· CoolVDS Team

Cloud ubiquity is a lie. Learn how to architect a fault-tolerant, hybrid infrastructure using KVM, HAProxy, and bare-metal performance without succumbing to the 'noisy neighbor' effect of massive public clouds.

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 In the wake of recent high-profile breaches, the "castle and moat" strategy is obsolete.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

The "NoOps" Illusion: Decoupling Architecture with Queues & KVM in 2014

· CoolVDS Team

While the industry buzzes about PaaS and 'NoOps', real scalability requires robust asynchronous patterns. We explore how to architect high-performance worker queues using Redis, Celery, and KVM-based VPS in Norway.

coolvds.com › Blog › DevOps & Infrastructure

Containers Don't Contain: Hardening LXC and Docker 0.8 for Production

· CoolVDS Team

It is 2014, and the container revolution is here. But before you deploy Docker to production, you need to understand the security risks of shared kernels. Here is a battle-hardened guide to locking down LXC and why KVM is mandatory for true isolation.

coolvds.com › Blog › DevOps & Infrastructure

Beyond Nagios: Why "Up" Isn't Good Enough for High-Traffic Norwegian Ops

· CoolVDS Team

Stop relying on simple ping checks. In 2014, the battle isn't about uptime—it's about latency and insight. We dive deep into transitioning from legacy monitoring to full-stack instrumentation using Graphite, StatsD, and Logstash on high-performance KVM architecture.

coolvds.com › Blog › Security & Compliance

Escaping the Jail: Hardening LXC and OpenVZ Environments in Production

· CoolVDS Team

While the buzz around Docker and lightweight virtualization grows, the security implications of shared kernels remain a massive blind spot. We dive deep into hardening LXC, managing cgroups, and why KVM isolation is the superior choice for Norwegian data sovereignty.

coolvds.com › Blog › Performance Optimization

Stop Guessing: Why Your Uptime Monitor is Lying to You About Performance

· CoolVDS Team

Uptime doesn't equal performance. In 2013, simplistic ping checks aren't enough. We dive deep into Application Performance Monitoring (APM), investigating wait I/O, PHP-FPM bottlenecks, and why hosting your data outside Norway might be killing your conversion rates.

coolvds.com › Blog › DevOps & Infrastructure

The Death of the LAMP Monolith: Scaling Asynchronous Workers on KVM

· CoolVDS Team

Stop letting long-running scripts kill your Apache processes. Learn how to architect a decoupled, high-performance worker queue using Redis, Celery, and Supervisord on pure SSD VPS infrastructure in Norway.

coolvds.com › Blog › Security & Compliance

Surviving the Shared Kernel: Hardening LXC & OpenVZ for Production

· CoolVDS Team

Container virtualization is lightweight but risky. Learn how to lock down LXC and OpenVZ environments against root escalation and resource exhaustion using cgroups, iptables, and the new Kernel 3.8 user namespaces.

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 › Security & Compliance

LXC & OpenVZ Security: Hardening the Shared Kernel for Production

· CoolVDS Team

Container virtualization offers incredible density, but the shared kernel model exposes significant attack surfaces. We dive into manual cgroup limits, iptables isolation, and why KVM is still king for sensitive data under Norwegian privacy laws.