Tutorials
In-depth technical tutorials, guides, and infrastructure best practices.
From Single Server to Cluster: Wazuh 4.14 High Availability Setup
Learn to deploy a fault-tolerant Wazuh 4.14 cluster with multiple manager and indexer nodes.
Build Proxmox VE 9.2 HA Cluster: 3 Nodes, Corosync, and Quorum
Build a 3-node Proxmox VE 9.2 HA cluster: private Corosync networking, quorum, shared storage, HA rules, failover testing, and the new Arm/Disarm workflow.
systemd Resource Controls: Stop One App from Crashing Your Whole VPS
Learn systemd resource controls: Limit CPU with CPUQuota, RAM with MemoryMax, I/O with IOWeight, and process count with TasksMax.
How to Share an NVIDIA GPU Across Multiple Proxmox LXC Containers
Share one NVIDIA GPU across multiple unprivileged Proxmox LXC containers for AI inference and media transcoding, with driver setup, device passthrough, and CUDA/NVENC validation for Proxmox VE 9.2.
Complete Setup Guide for PostgreSQL 18 Logical Replication Failover
Configure PostgreSQL 18 logical replication failover with synchronized failover slots. Build a primary, standby, and subscriber lab, verify slot readiness, and promote safely.
How to Create Ubuntu 26.04 Cloud-Init Templates in Proxmox VE 9.2
Build a reusable Ubuntu 26.04 Cloud-Init Template in Proxmox VE 9.2. Import the qcow2 image, set up SSH keys and networking, and clone it for fast VPS-style provisioning.
Rootless Container Deployment Using Podman Quadlet and systemd
Learn how to deploy a rootless, multi-container production stack using Podman Quadlet and systemd, with health checks, dependencies, and journald logging.
Configure NVIDIA GPU Passthrough on Proxmox VE 9.2 with Kernel 7.0
Learn Proxmox 9.2 NVIDIA GPU passthrough: IOMMU, VFIO, VM setup, driver install, and CUDA verification on kernel 7.0. Includes fixes for common errors.
KEDA Troubleshooting: ScaledObject Ready, Auth, and Scaling Delay Fixes
Fix KEDA ScaledObject Not Ready errors, TriggerAuthentication failures, HPA conflicts, and scaling delays with this KEDA troubleshooting guide.
PostgreSQL 18 AIO Tuning Guide: io_uring vs Worker vs Sync
Learn PostgreSQL 18 AIO tuning: install PostgreSQL 18.6, benchmark sync, worker, and io_uring, and tune effective_io_concurrency with real NVMe test results.
Install Proxmox VE 9.2: ZFS Mirror Setup on a Dedicated Server
Install Proxmox VE 9.2 on a dedicated server: ZFS mirror storage, network and hostname setup, free HTTPS certificate, updates, and your first VM.
Kueue GPU Topology Aware Scheduling: Install, Configure, Run AI Jobs
Learn Kueue GPU topology-aware scheduling: install Kueue, set up ResourceFlavors, ClusterQueues, and TAS so multi-GPU AI jobs avoid fragmented, pending clusters.
