Cloud Costs Monitor – Multi-Cloud Cost Management System

This project is a self-hosted, multi-cloud cost management system for AWS and Azure that I designed and built from scratch. It runs daily to collect granular cost line items at the service × region × account level, detects spend anomalies, sends configurable alerts, and produces a rich suite of HTML reports — from executive summaries and rolling-window trend views to per-owner and per-department drilldowns and an annual budget tracker. All data is stored locally in a SQLite database, keeping the system lightweight and self-contained with no external SaaS dependencies. ...

February 26, 2026 · 6 min · 1210 words · Dmitry Konovalov

Automating Oracle GoldenGate SSL Certificate Generation with PowerShell

Overview Managing SSL/TLS certificates for Oracle GoldenGate replication environments can be tedious and error-prone when done manually. I developed a PowerShell automation solution that streamlines the entire certificate generation process using Windows Active Directory Certificate Authority infrastructure. The Challenge Oracle GoldenGate requires SSL/TLS certificates for secure replication between database servers. The traditional approach involves: Manually creating certificate signing requests (CSRs) Submitting requests to the Certificate Authority Downloading and installing certificates Exporting private keys Converting formats between Windows and Linux Managing certificate inventory This manual process is: ...

November 7, 2025 · 14 min · 2967 words · Dmitry Konovalov

Home Assistant VM Migration: TrueNAS Core to Proxmox with ZFS ZVOL Export

Complete guide to migrating a Home Assistant VM from TrueNAS Core to Proxmox using ZFS ZVOL export and automated scripts. Includes comprehensive planning, execution scripts, troubleshooting guide, and lessons learned from a real-world migration.

12 min · 2405 words · Dmitry Konovalov