How To Redirect www to Non-www with Nginx on CentOS 7
This tutorial will show you how to redirect a www URL to non-www, e.g. `www.example.com` to `example.com`, with Nginx on CentOS 7.
Cómo migrar datos de Redis con replicación en Ubuntu 18.04
Redis es un sistema de almacenamiento de claves y valores en memoria conocido por su flexibilidad, rendimiento, soporte amplio en varios idiomas y funciones integradas como la replicación. La replicación es la…
Como instalar o MongoDB no Ubuntu 20.04
Uma versão anterior deste tutorial foi escrita por Melissa Anderson. O MongoDB, também conhecido como Mongo, é um banco de dados de documentos de código aberto usado em muitas…
Arch Linux — code — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read • Source: Arch ASA ASA-202107-34 Related CVEs: CVE-2021-31214 CVE-2021-31211 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1.56.2-3. Fixed in: 1.58.0-1. Group: AVG-1963. Table of contents Symptom & Impact Environment & Reproduction Root […]
How To Gather Infrastructure Metrics with Topbeat and ELK on Ubuntu 14.04
In this tutorial, we will show you how to use Topbeat, on an Ubuntu 14.04 server, with an ELK stack to gather and visualize infrastructure metrics. Topbeat, which is one of the several “Beats” data shippers that helps send various types of server data to an Elasticsearch instance, allows you to gather information about the CPU, memory, and process activity on your servers.
Oracle Linux 8 — openssl — security and stability fixes — required update (ELSA-2020-5476)
🟠 High ⏱ 15–60 min Last verified: 19 February 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2020-5476 Related CVEs: CVE-2020-1971 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
Debian 9 – high CPU and disk I/O from systemd-journald
🟡 Medium ⏱ 5–30 min Last verified: 19 February 2021 Affected versions: Debian 9 📖 ~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 & […]
Ubuntu 18.04 broken package dependencies after upgrade
🟡 Medium ⏱ 5–30 min Last verified: 19 February 2021 📖 ~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 Tune your SSH Daemon Configuration on a Linux VPS
SSH is the standard way to connect to remote Linux systems. You probably know the basics of how to use it, but the daemon also has many options that can give you more flexibility in user authentication and control. In this guide, we’ll explore some of these options in order to give you a more secure and more flexible SSH experience.
How to Set Up a Jekyll Development Site on Ubuntu 18.04
Jekyll is a static-site generator that provides some of the benefits of a Content Management System (CMS) while avoiding the performance and security issues introduced by such database-driven sites.
