How To Configure The Nginx Web Server On a Virtual Private Server
Nginx is a web server and reverse proxy server. This guide will examine some of Nginx’s default configuration files in order to better understand how the server works.
How To Automate Jenkins Setup with Docker and Jenkins Configuration as Code
Jenkins uses a pluggable architecture to provide most of its functionality. JCasC makes use of the Configuration as Code plugin, which allows you to define the desired state of your Jenkins configuration as one or more YAML file(s), eliminating the need for the setup wizard. In this tutorial, you will automate the installation and configuration of Jenkins using Docker and the Jenkins Configuration as Code (JCasC) method.
Como Fazer um Programa de Calculadora Simples no Python 3
A linguagem de programação Python é uma grande ferramenta para utilizar ao trabalhar com números e avaliar expressões matemáticas. Esta qualidade pode ser utilizada para fazer programas úteis. Este tutorial apresenta um exercício de aprendizado para ajudá-lo a fazer um…
How to Set Up a Load-Balanced PostgreSQL Cluster with Patroni on RHEL 8
Patroni is a Python-based high-availability solution for PostgreSQL that uses a distributed configuration store — in this tutorial, etcd — to manage leader election, automatic failover, and cluster membership. On RHEL 8, both Patroni and etcd are available through the EPEL repository, making the installation straightforward. This guide walks through installing PostgreSQL, etcd, and Patroni, […]
Additional Recommended Steps for New CentOS 7 Servers
After setting up the bare recommended configuration for a new server, there are often some additional steps that are highly recommended in most cases. In this guide, we’ll continue the initial configuration by tackling some recommended, but optional procedures.
OpenBSD 7.5 — expat — errata 014_expat — security advisory — syspatch and remediation
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: OpenBSD 7.5 📖 ~4 min read • Source: OpenBSD 7.5 errata 014_expat Errata topic: Security: expat (All architectures) Issued: November 15, 2024 Related CVEs: CVE-2024-50602 Upstream summary: In libexpat fix crash within function XML_ResumeParser. CVE-2024-50602 Table of contents Symptom & Impact Environment […]
Oracle Linux 8 — cups — security and stability fixes — required update (ELSA-2020-1765)
🟢 Low ⏱ 5–15 min Last verified: 6 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2020-1765 Related CVEs: CVE-2019-8696 CVE-2019-8675 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]
Ubuntu 18.04 GNOME Shell freezes or crashes
🟡 Medium ⏱ 5–30 min Last verified: 6 October 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 […]
How to Set Up SLES 12 for High-Performance Computing
Introduction This tutorial covers How to Set Up SLES 12 for High-Performance Computing on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper […]
Windows Server 2012 R2 ReFS Metadata Corruption Warnings on Data Volume – Fix & Prevention
🟠 High ⏱ 5–30 min Last verified: 6 October 2020 Affected versions: Windows Server 2012 R2 📖 ~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 […]
