GnTech Blog

Prometheus SNMP Exporter — Monitoring MikroTik and Network Devices

Deploy Prometheus SNMP Exporter with Docker Compose to collect bandwidth, CPU, memory, and interface metrics from MikroTik routers and network devices. Configure SNMP v2c/v3, generate the exporter config, and visualize everything in Grafana.

MinIO Docker Deployment — Self-Hosted S3-Compatible Object Storage

Deploy MinIO with Docker Compose for self-hosted S3-compatible object storage. Covers single-node and multi-drive setups, Traefik reverse proxy, bucket policies, and backup strategies.

Uptime Kuma Docker Deployment — Self-Hosted Monitoring Dashboard

Deploy Uptime Kuma with Docker Compose for real-time homelab monitoring. Configure Traefik reverse proxy, Telegram notifications, status pages, and SQLite-backed persistence in minutes.

Docker Database Backup Automation — pg_dump, cron, and S3 Uploads

Automate PostgreSQL and MySQL database backups in Docker Compose with cron-driven pg_dump and mysqldump, retention pruning, healthchecks monitoring, and S3 off-site upload. Production-ready configs included.

Renovate Bot Homelab — Automated Docker Dependency Updates with Git

Automate Docker dependency updates in your homelab with Renovate Bot. Self-host or use the cloud bot to scan Docker Compose files and Dockerfiles, then open pull requests with version bumps, digest updates, and changelog summaries.

Linux CPU Frequency Scaling and Power Management for Homelab Servers

Complete guide to Linux CPU frequency scaling and power management for 24/7 homelab servers. Covers cpupower governors, Intel and AMD p-state drivers, Turbo Boost control, C-states, and performance tuning tradeoffs with real commands.

FRRouting BGP on Linux — Dynamic Routing for Your Homelab Network

Deploy FRRouting on Linux for BGP dynamic routing in your homelab. Covers FRR installation, iBGP/eBGP peering with MikroTik, route filtering, prefix-lists, and OSPF-to-BGP redistribution with production-ready configs.

MikroTik RouterOS 7.23: HTTPS, MLAG Fixes, and Upgrade Guide

RouterOS 7.23 stable is out with HTTPS-default upgrades, improved MLAG bridge MAC synchronization, WiFi VLAN fixes, and DHCP snooping message-type recognition. This guide covers the changelog, key fixes, and step-by-step upgrade steps for your MikroTik devices.

Proxmox VM Disk Performance — virtio-blk, iothreads, cache modes, and async IO

A practical guide to tuning Proxmox VM disk performance — covering virtio disk controller selection, iothread pinning, cache modes, discard/trim, and async IO settings for maximum throughput on ZFS and NVMe storage.

Docker Compose Override Files — Multi-Environment Homelab Deployments

Learn how Docker Compose override files let you manage dev, staging, and production deployments from a single base docker-compose.yml — with port mapping overrides, resource limits, volume mounts, and security hardening for your homelab.