Monitoring tutorial - IT technology blog
Posted inMonitoring

How to Install and Configure Grafana Beyla: Automatic Application Monitoring Without Code Changes Using eBPF for Go, Python, and Node.js

Grafana Beyla uses eBPF to automatically collect metrics and traces from Go, Python, and Node.js applications — no code changes, no SDK installation required. This post walks through installing and configuring Beyla, and shares real-world results after 6 months running on production with Prometheus + Grafana.
Fedora tutorial - IT technology blog
Posted inFedora

Installing and Configuring Redis on Fedora Server: Handling SELinux and firewalld for High-Performance Cache Server Deployment

Redis on Fedora Server won't connect after installation — the root cause typically comes from three layers: the default localhost bind address, firewalld blocking port 6379, and SELinux enforcing mode denying network connections. This article goes straight to fixing all three, with a production security deployment checklist included.
Network tutorial - IT technology blog
Posted inNetwork

Deploying QinQ (Double VLAN 802.1ad) on Linux: Multi-Tenant Traffic Isolation and VLAN Space Expansion

QinQ (Double VLAN 802.1ad) expands the VLAN address space to ~16 million and provides fully independent traffic isolation between tenants over a single physical link. This guide covers configuring QinQ on Linux with ip link — from a 5-minute quick start to a production-ready setup with systemd-networkd — along with MTU debugging tips and a real-world intermittent packet loss story.
Virtualization tutorial - IT technology blog
Posted inVirtualization

How to Install and Use Lima on macOS: Create Lightweight Linux VMs with QEMU and VZ Framework as a Free Docker Desktop Alternative

Lima is an open-source tool for creating Linux virtual machines on macOS using QEMU or Apple's VZ Framework, replacing Docker Desktop completely for free. This article compares available solutions, walks through Lima installation, Docker integration, and managing multiple VMs from the command line.