Build a Highly Available Mail Server Stalwart and FoundationDB on Debian
Setting up a reliable mail infrastructure is no longer limited to large organizations. With modern components like Stalwart Mail Server and FoundationDB, it is possible to run a highly available and distributed mail platform without relying on a single machine or a fragile storage backend and I became a pretty huge fan of this setup. The goal of this setup .... [read more] | [2026-02-15]
PegaProx for Proxmox with Microsoft AD and OIDC Support
The evolution of PegaProx from a promising management tool to a powerhouse datacenter manager (often also mentioned as the alternative of vCenter/vSphere for Proxmox environemnts) has reached a major milestone today. With the release of version 0.6.6 , the development team has delivered on one of the most vocal requests from the enterprise community: the integration of centralized, industry-standard authentication. .... [read more] | [2026-02-15]
FOSDEM 2026 – Open Source, Digital Sovereignty, and Europes Future
FOSDEM , the Free and Open Source Developers’ European Meeting, is an annual pilgrimage for open source enthusiasts from all over the world. What started as a small gathering in 2000, originally named the Open Source Developers of Europe Meeting (OSDEM), has grown into one of the most significant conferences dedicated to free and open source software. In 2026, FOSDEM .... [read more] | [2026-01-31]
PegaProx Explained: A Real Datacenter Manager for Proxmox Clusters
PegaProx is designed to be the central control point for modern Proxmox VE based datacenters. It brings together everything administrators need to manage complex infrastructures in a single, clear interface, similar to what many operators already know from established enterprise virtualization platforms. Instead of switching between clusters, nodes, storage views, and monitoring tools , PegaProx provides a real unified platform .... [read more] | [2026-01-25]
bhyve Prometheus exporter for Sylve on FreeBSD
This post describes how to export metrics from bhyve based virtual machines and Jails managed by Sylve on FreeBSD by my Prometheus exporter. The focus is on collecting reliable data from the host system without relying on tooling that was primarily designed for Linux hypervisors or assumes the existence of hypervisor level counters. Monitoring bhyve workloads on FreeBSD is different .... [read more] | [2026-01-22]
ProxSnap The Missing Snapshot Management Tool for Proxmox Clusters
Snapshots are one of the most useful safety mechanisms in virtualized environments. They make it easy to roll back changes, reduce risk during upgrades, and provide confidence when testing or migrating workloads. Proxmox VE supports snapshots for both virtual machines and containers, and on a single guest level this works well and reliably. The problem starts once a setup grows .... [read more] | [2026-01-19]
ProxLB Enters Its Next Chapter with credativ
Two years ago I started working on a project called ProxLB because something essential was missing in my daily work with Proxmox VE based clusters. At that time I was deeply involved in my BoxyBSD project which provides free VPS instances for people who are interested in BSD systems. Running such an environment made it very clear that a DRS .... [read more] | [2026-01-16]
ProxLB 1.1.11 Released – Intelligent Load Balancing for Proxmox VE
ProxLB is a lightweight load-balancing and placement helper designed for Proxmox VE environments, helping operators make smarter scheduling and availability decisions for virtual machines and containers. It provides advanced features such as pinning, affinity and anti-affinity rules, maintenance mode, and intelligent node selection to keep workloads where they belong. With a strong focus on simplicity and native integration, ProxLB enhances .... [read more] | [2026-01-12]
Self-Hosted S3 Storage with Garage for Proxmox Backup Server
With Proxmox Backup Server 4 , a long-awaited feature has finally arrived: native support for S3-compatible object storage as a datastore. This fundamentally expands how backups can be designed, stored, and scaled in Proxmox environments. Until now, Proxmox Backup Server required local disks or locally attached storage to host datastores. With version 4, this limitation is gone. Datastores can now .... [read more] | [2025-12-27]
Avoid Live Migration Issues in Proxmox VE with ProxCLMC
Live migration is one of the most powerful and frequently used features in a Proxmox VE cluster, but it relies on a prerequisite that is often underestimated: consistent CPU compatibility across all nodes. In real-world environments, clusters rarely consist of identical hardware where we could simply use the host type. Nodes are added over time, CPU generations differ, and feature .... [read more] | [2025-12-22]
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