OVHcloud

Import Leased /24 into OVHcloud via BYOIP

A technical how-to explaining how to import a leased IPv4 /24 block into OVHcloud using BYOIP (Bring Your Own IP) to avoid OVHcloud's per-IP rental fee. The author compares OVHcloud's $2.39/month per IP charge (about $612/month for a /24) with leasing a clean /24 (cited from IPbnb at ~ $79/month) and describes the requirements (supported RIRs, prefix size, clean/unannounced status, WHOIS allocation), the setup steps (publish a route object with OVH's ASN, prove control via a token in the inetnum WHOIS record, order in OVH Control Panel, assign to service to announce), and operational gotchas (region selection, WHOIS/rDNS delegation, withdraw previous announcements, anti-DDoS included). The post highlights that leased blocks can be used with BYOIP if proper authorization and routing/ROA objects are in place.

Reduced OPEX 99.5% by Rewriting App in Go

A technical case study describing how the author rewrote a Ruby on Rails-based document search SaaS into a single Go binary (the Project Apario reader) and drastically cut operational expenses. The original PhoenixVault stack incurred roughly $7,000/month in OPEX (ElasticSearch, MongoDB Atlas, OVH hosting, plus other services). Replacing external managed services and Rails with a self-contained Go application running on OVH bare-metal reduced costs to about $33/month (~99.5% reduction). The post documents implementation details — local JSON/.db directories, built-in CORS/CSP, self-signed auto-rotating TLS (auto-tls), rate limiting, IP-ban middleware, multiple search algorithms, and configuration flags — and links to the open-source Project Apario repositories. Publication date: 2026-07-27.

Topobuilder containerizes cPanel site into AWS multi-region

Topobuilder is a Go binary (built in 2024) that converts an existing PHP website hosted on a cPanel server into a multi-region, containerized application provisioned on AWS. It runs from a single YAML configuration file, supports remote databases (e.g., RDS), and deploys clusters (3–9 regions) behind an HAProxy load balancer in roughly 12–36 minutes depending on topology and concurrency settings. The tool renders Terraform files, builds a Docker image from the live cPanel site, uploads and deploys images to EC2 instances, configures networking and health checks, and publishes DNS changes via the Cloudflare API when configured. Topobuilder includes a verbose logging package that redacts secrets at STDOUT, integrates with 1Password using op:// secret lookups, uses concurrent validation with coordinators, and writes a .tbstate file for rollback and state tracking. The source remains closed and the author notes it was built quickly and has not required updates since.