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coolvds.com › Blog › DevOps & Infrastructure

Observability vs. Monitoring: Why Your Green Dashboards Are Lying to You

· CoolVDS Team

It is September 2020. Your Nagios checks are green, but customers are complaining about timeouts. We dismantle the difference between monitoring and observability, discuss the impact of Schrems II on your data pipelines, and show you how to self-host the 'Three Pillars' on high-performance infrastructure in Norway.

coolvds.com › Blog › DevOps & Infrastructure

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

· CoolVDS Team

Monitoring tells you the server is online. Observability tells you why the API latency spikes only during Oslo checkout hours. We break down the transition from Nagios-style checks to high-cardinality debugging with Prometheus and Loki in a post-Schrems II world.

coolvds.com › Blog › DevOps & Infrastructure

Kubernetes Networking Deep Dive: CNI, IPVS, and Why Latency Kills Clusters

· CoolVDS Team

A battle-hardened guide to optimizing Kubernetes networking in 2020. We strip away the hype to focus on CNI selection, IPVS vs. iptables, and why the Schrems II ruling makes Norwegian infrastructure the only safe bet for your data.

coolvds.com › Blog › DevOps & Infrastructure

Container Security in 2020: Stop Running as Root and Lock Down Your Syscalls

· CoolVDS Team

With the ink barely dry on the Schrems II ruling, data sovereignty is paramount. But legal compliance implies technical security. Here is how to harden your container runtime, drop capabilities, and why KVM isolation on CoolVDS is your ultimate safety net.

coolvds.com › Blog › Performance Optimization

API Gateway Optimization: Crushing Latency on High-Traffic Nodes

· CoolVDS Team

Your API Gateway is likely the bottleneck you haven't tuned. We dive deep into Linux kernel adjustments, NGINX upstream keepalives, and why NVMe I/O is non-negotiable for low-latency routing in 2020.

coolvds.com › Blog › DevOps & Infrastructure

Beyond Uptime: Building a Bulletproof APM Strategy for High-Traffic Norwegian Workloads

· CoolVDS Team

Uptime metrics lie. This guide cuts through the noise of standard monitoring, offering a battle-tested approach to Application Performance Monitoring (APM) using the ELK stack and Prometheus. Learn how to diagnose latency spikes, handle GDPR log compliance in Norway, and why underlying hardware performance is the hard limit of optimization.

coolvds.com › Blog › DevOps & Infrastructure

API Gateway Performance Tuning: Surviving the Thundering Herd in 2020

· CoolVDS Team

Default configurations are the enemy of scale. We dissect the Linux kernel and Nginx settings required to handle 10k+ RPS without melting your CPU, specifically tailored for the Nordic infrastructure landscape.

coolvds.com › Blog › DevOps & Infrastructure

Observability vs Monitoring: Why Green Dashboards Are Lying to You

· CoolVDS Team

Monitoring tells you the server is up. Observability tells you why the checkout is failing for users in Bergen. We break down the technical differences, the 2020 stack (Prometheus, ELK, Jaeger), and why infrastructure matters.

coolvds.com › Blog › Security & Compliance

Stop Running as Root: The 2020 Guide to Hardening Containers in Production

· CoolVDS Team

Container isolation is a myth if you stick to defaults. From dropping kernel capabilities to managing secrets without environment variables, here is the battle-tested guide to securing your infrastructure against runC exploits and privilege escalation.