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Despliegues reproducibles con Docker Swarm y GitOps: latest no es una versión

27 Jul 2026 7 min read

"latest" is not a version: three lessons from deploying our own website with Docker Swarm

The pipeline went green, the webhook returned 200, and the site kept serving the old content. Three real lessons from our GitOps CI/CD on Docker Swarm: why the orchestrator does not chase your tag and what it takes for a redeploy to actually redeploy, why a linter is not a test (and the smoke test that saved our blog index), and the "zero downtime" our own file claimed but never delivered with a single replica.

Docker DevOps Infrastructure

SD-WAN multi-sede: cuándo compensa y cuándo sobra

26 Jul 2026 5 min read

SD-WAN yes, but not everywhere: when it pays off and when it's overkill

Gartner predicted that by 2026, 70% of enterprises would have SD-WAN. We deploy it — and even so, more than once we have recommended against it. What problem it actually solves, when it pays off (changing sites, two transports, suffering applications), when two lines and WireGuard do the job, and the costs that never show up in the demo: the forever license, the orchestrator as a dependency and the complexity that doesn't disappear — it relocates.

SD-WAN Networking Infrastructure

Colocation vs cloud público: la cuenta a cinco años, con el caso 37signals

26 Jul 2026 5 min read

The cloud isn't expensive: it's expensive for the wrong workload. Colocation vs public cloud, with the math done

37signals was paying $3.2 million a year for cloud, bought $700,000 of servers and recouped them in the first year; in 2025 it announced moving its 18 PB out of S3. Meanwhile, worldwide cloud spending keeps growing at a 20% annual clip. Both things are true: the difference is who does the math. Which workloads overpay in the cloud, when the cloud still wins, and the five-year colocation math, line by line.

Colocation Cloud Datacenter

Ceph: réplica 3 vs erasure coding, la cuenta completa

24 Jul 2026 7 min read

Erasure coding promises twice the space of 3-way replication in Ceph. The full math says otherwise

Same fault tolerance and twice the usable space: pitched like that, erasure coding sounds obvious. We run Ceph in production and our VMs are still on 3-way replication. The space math, the write math, the recovery math and the node math — and where we do use erasure coding.

Ceph Storage Proxmox

AWS, July 16

~8 hours of errors

21 Jul 2026 5 min read

AWS went down again on July 16: eight hours that explain what a disaster recovery plan is (actually) for

CloudFront served errors for about eight hours on July 16, 2026. It's the third major AWS outage in nine months, and none of them was an attack. What to map, what to promise and what NOT to build so your provider's incident doesn't become yours.

Disaster Recovery AWS Cloud

VMware → Proxmox

Guide 2026

20 Apr 2026 12 min read

VMware + Broadcom in 2026: Survival Guide for CIOs and CTOs

Broadcom has increased VMware costs by up to 1,200%. Real impact analysis, available alternatives, and step-by-step Proxmox VE migration plan for enterprises.

Proxmox VMware Broadcom

500+ VMs

Zero Downtime

18 Apr 2026 15 min read

How We Migrated 500+ VMs from VMware to Proxmox Without Stopping the Business

Real case study: migration of 512 virtual machines across 12 ESXi hosts to Proxmox VE with Ceph. 10 weeks, zero data loss, -72% cost reduction. The complete process step by step.

Proxmox Migration Case Study

SmokePing Docker

Network monitoring

5 Feb 2026 5 min read

SmokePing in Docker: Latency and packet loss monitoring with a modern interface

Production-ready SmokePing Docker image with modern web UI, traceroute history, Telegram alerts and master/slave setup. One-command deployment. Open source by everyWAN.

Open Source Docker Technology

19 Nov 2025 5 min read

19MB file that paralyzed 20% of the Internet! Cloudflare's global outage

On November 18, 2025, Cloudflare suffered its worst outage since 2019. An internal technical issue paralyzed much of the network for 6 hours, affecting X, ChatGPT, League of Legends and many other services.

Cloudflare Infrastructure Internet

20 Jan 2025 5 min read

Proxmox Datacenter Manager 1.0: The revolution in centralized virtual infrastructure management

Proxmox has launched its secret weapon for enterprise-scale virtual infrastructure management: Proxmox Datacenter Manager 1.0. Discover how this first stable release revolutionizes the management of multiple Proxmox VE and Proxmox Backup Server environments.

Proxmox Virtualization Datacenter

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