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coolvds.com › Blog › DevOps & Infrastructure

Kubernetes Networking Deep Dive: Surviving the Packet Jungle in 2016

· CoolVDS Team

Kubernetes 1.4+ networking isn't magic—it's a complex beast of iptables, CNI plugins, and encapsulation. We dissect the flow of a packet, compare Flannel vs. Calico, and explain why your underlying VPS I/O is the hidden bottleneck for etcd.

coolvds.com › Blog › DevOps & Infrastructure

Escaping the Vendor Lock-in Trap: A Pragmatic Hybrid Cloud Strategy for 2017

· CoolVDS Team

Is your entire infrastructure held hostage by a single US hyperscaler? We break down a battle-tested architecture using local Norwegian VPS for core data stability and public cloud for burst capacity—featuring real config examples for HAProxy and Ansible.

coolvds.com › Blog › DevOps & Infrastructure

Stop Blaming Maven: Why I/O Latency is Killing Your CI/CD Pipeline

· CoolVDS Team

Your build times aren't slow because of your code—they're slow because your VPS storage is choking. We analyze the impact of Disk I/O on Docker and Jenkins pipelines and why NVMe-backed KVM is the only viable architecture for 2016.

coolvds.com › Blog › DevOps & Infrastructure

Stop Monitoring, Start Observing: Why Your Green Dashboard is Lying to You

· CoolVDS Team

It is August 2016, and the old way of monitoring servers is dead. 'Is it up?' is the wrong question. We dive into the shift towards whitebox monitoring, ELK stacks, and Prometheus 1.0 to debug the 'unknown unknowns' on your VPS.

coolvds.com › Blog › DevOps & Infrastructure

Stop Touching Production: The Case for Git-Driven Infrastructure in 2016

· Ivan Shevchenko

Manual SSH deployments are creating snowflake servers and security risks. Here is how to implement a Git-centric workflow using Jenkins 2.0, Ansible, and Docker to enforce immutable infrastructure on your Norwegian VPS.

coolvds.com › Blog › DevOps & Infrastructure

Kubernetes Networking Deep Dive: Surviving the Packet Jungle in Production

· Michał Zając

A battle-hardened look at Kubernetes 1.2 networking, from the chaos of iptables to the latency costs of overlay networks like Flannel. Learn how to debug packet drops and why your underlying VPS hardware in Norway makes or breaks your cluster.

coolvds.com › Blog › DevOps & Infrastructure

Latency Kills: Why Centralized Cloud Fails Nordic Users (and How to Fix It)

· CoolVDS Team

Physics doesn't negotiate. While major cloud providers push centralized regions in Frankfurt or Ireland, Norwegian users pay the price in latency. Here is a battle-tested guide to deploying 'Edge' infrastructure using distributed KVM VPS instances in Oslo.