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coolvds.com › Blog › DevOps & Infrastructure

Kubernetes Networking Deep Dive: Taming the iptables Beast (v1.2 Edition)

· CoolVDS Team

A battle-hardened look at how Kubernetes handles pod-to-pod communication. We dissect the specific challenges of CNI plugins like Flannel and Calico, debug MTU mismatches, and explain why raw underlying hardware performance is critical for overlay networks.

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 › DevOps & Infrastructure

Locking Down Docker: Survival Guide for Norwegian DevOps in 2016

· CoolVDS Team

Container adoption is exploding, but default configurations leave you vulnerable. We dissect Docker 1.10 security features, user namespaces, and why KVM isolation remains critical for Norwegian data compliance post-Safe Harbor.

coolvds.com › Blog › Database Management

Database Sharding in 2016: Survival Strategies for When Your Monolith Melts

· Petra Horvat

A battle-hardened guide to database sharding strategies using MySQL 5.7 and MongoDB 3.2. We cover application-level partitioning, UUID vs. Ticket Servers, and why low-latency infrastructure in Norway is critical for distributed consistency.

coolvds.com › Blog › DevOps & Infrastructure

CI/CD Bottlenecks: Why Your Jenkins Builds Are Slow (And How to Fix Them)

· CoolVDS Team

Is your deployment pipeline bleeding time? We dissect disk I/O blocking, proper Docker caching strategies, and the critical impact of hardware virtualization on CI/CD performance. Learn how to cut build times by 40% using KVM and NVMe infrastructure.

coolvds.com › Blog › DevOps & Infrastructure

Demystifying Kubernetes 1.1 Networking: Flannel, Iptables, and Metal

· CoolVDS Team

Kubernetes networking isn't magic—it's packet encapsulation and routing tables. We deep dive into K8s 1.1 networking models, the overhead of overlays like Flannel, and why low-latency hardware is critical for etcd stability.