Nginx server blocks — equivalent to Apache’s virtual hosts — allow a single Nginx instance to serve multiple websites from one server. Each server block defines a distinct configuration scope that responds to specific domain names or IP addresses. On RHEL 8, additional server block configuration files are stored under /etc/nginx/conf.d/ and automatically loaded by […]
🟠 High ⏱ 5–30 min Last verified: 14 June 2020 Affected versions: Windows Server 2019 📖 ~2 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
The journalctl command is the primary interface for querying and browsing logs collected by systemd-journald on RHEL 8. Unlike traditional syslog files, the systemd journal stores structured, binary log data that can be filtered by unit, priority, time range, PID, and more. Mastering journalctl allows administrators to diagnose service failures, track kernel events, and export […]
Introduction This guide explains how to Install Kibana on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the standard repositories […]
Introduction How to Set Up VLAN Tagging on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. […]
🟡 Medium ⏱ 5–30 min Last verified: 12 June 2020 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]
Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to install perl on ibm aix 7.1 on IBM AIX […]
Introduction This guide explains how to Audit Security with Lynis on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained […]
Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up configure gitea self-hosted git service on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully […]
Introduction Deploying set up mariadb replication on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before you […]
