Insights, tutorials, and updates from the CoolVDS team
Microservices solve development bottlenecks but create operational nightmares. Learn how to implement a Service Mesh with Linkerd to fix latency and observability before the GDPR deadline hits.
The perimeter firewall is dead. With GDPR looming in 2018, relying on a 'trusted internal network' is negligence. Here is how to lock down your infrastructure using standard Linux tools, paranoia, and CoolVDS isolation.
With the GDPR enforcement date looming, the traditional 'castle and moat' security strategy is becoming a liability. We dismantle the perimeter and build a Zero-Trust model using KVM isolation, micro-segmentation, and rigorous identity management.
Nagios says the server is up. Your customers say the site is broken. In this deep dive, we explore the emerging shift from basic monitoring to deep system observability using ELK and Prometheus, specifically tailored for the Norwegian hosting landscape in 2017.
A battle-hardened guide to Kubernetes networking in early 2017. We dissect CNI plugins, debug iptables hell, and explain why underlying VPS latency determines cluster stability.
It is not a matter of if, but when. Learn how to architect a bulletproof Disaster Recovery plan using Linux primitives, avoiding the recent GitLab-style meltdown, while keeping your data compliant with Datatilsynet standards.
The 'castle-and-moat' security strategy is failing. In a world of ransomware and looming GDPR regulations, here is how to implement a Zero-Trust model using standard Linux tools available today.
Latency kills. Learn how to tune the Linux kernel and Nginx for high-throughput API gateways, specifically tailored for the Norwegian network topology available in 2017.
Latency kills conversion. In this deep dive, we explore kernel-level tuning, NGINX optimizations, and the critical role of NVMe storage in reducing API response times for Norwegian users.
Microservices solved your code velocity problems but broke your network reliability. In this guide, we deploy Linkerd (v1.0) to handle service discovery and circuit breaking without polluting application code. Valid for March 2017.
Bottlenecks in your API gateway can cripple your microservices. We dive into kernel-level tuning, Nginx worker optimization, and the infrastructure requirements needed to handle 10k+ requests per second in a pre-GDPR world.
Hope is not a strategy. Learn how to architect robust disaster recovery plans using rsync, Percona XtraBackup, and KVM snapshots, specifically tailored for Norwegian data compliance requirements.
A battle-hardened guide to Pod-to-Pod communication, CNI plugins, and optimizing iptables in 2017. Learn why infrastructure latency makes or breaks your cluster.
Stop relying on passive checks. In 2017, 'up' is not enough. We implement active metrics scraping with Prometheus and Grafana on Ubuntu 16.04 to visualize real bottlenecks.
A battle-hardened look at Kubernetes networking primitives, CNI choices, and why low-latency infrastructure is non-negotiable for stability. Written for the DevOps engineer debugging iptables at 3 AM.
A battle-hardened guide to tuning your API Gateway for maximum throughput and minimal latency using 2017's best practices. From sysctl kernel tweaks to upstream keepalives, we dissect the stack.
Is your cloud bill spiraling while performance stagnates? We explore a hybrid infrastructure strategy combining local Nordic stability with public cloud elasticity, preparing you for the upcoming GDPR enforcement.
It is 2017, and TensorFlow 1.0 has changed the game. But throwing a Titan X at your model is useless if your I/O is choking the pipeline. Here is how to architecture a training stack that actually saturates the bus, strictly for Norwegian data compliance.
The 'Serverless' buzzword is dominating 2017, but proprietary cloud functions come with cold starts and data residency risks. Here is how to architect a containerized, self-hosted FaaS alternative using Docker and Nginx on Norwegian infrastructure.
Is your monthly AWS bill spiraling? Learn how to audit zombie processes, leverage KVM virtualization efficiency, and cut bandwidth costs by moving workloads closer to Oslo.
It's March 2017. GitLab just deleted their production DB, and Safe Harbor is dead. If your disaster recovery plan is just a nightly tarball, you are already dead in the water. Here is the battle-hardened guide to survival in the Norwegian hosting landscape.
It is March 2017. The era of simple uptime checks is dead. Discover how to move from passive monitoring to active observability using Prometheus, ELK, and raw kernel metrics on high-performance Linux VDS.
Database migration shouldn't be a game of Russian Roulette. Learn battle-tested strategies using replication and Percona tools to migrate your stack to high-performance NVMe infrastructure in Oslo without killing your uptime.
Microservices are trending, but they turn function calls into network calls. Here is how to architect for resilience using NGINX, Hystrix, and Consul without destroying your latency budgets in Oslo.
A battle-tested guide to optimizing Jenkins and GitLab CI pipelines. We cover Docker layer caching, NVMe I/O bottlenecks, and why infrastructure choice matters for Norwegian dev teams preparing for GDPR.
Stop scheduling 4 AM maintenance windows. This guide details a master-slave replication strategy for migrating MySQL/MariaDB instances to high-performance NVMe storage without killing your uptime.
Is your monthly AWS bill spiraling out of control? Learn how to audit zombie processes, tune MySQL for density, and leverage Norwegian KVM instances to cut infrastructure overhead by 40%.
When 'adding more RAM' stops working, you need a strategy. We dissect database sharding architectures relevant to high-traffic European workloads in 2017.
Default configurations are the enemy of low latency. In this deep dive, we rip apart sysctl.conf, optimize Nginx worker processes, and explain why hardware bottlenecks will render your software tuning useless without NVMe storage.
We benchmark the complexity and performance of Kubernetes 1.5 against Docker Swarm Mode. Learn which orchestrator fits your Norwegian infrastructure stack before the GDPR deadline hits.