Como centralizar logs com o Journald no Ubuntu 20.04
O autor selecionou o Free and Open Source Fund para receber uma doação como parte do programa Write for DOnations. Os logs de sistema são um componente extremamente importante no gerenciamento de…
openSUSE Tumbleweed — ruby2.7-rubygem-kramdown — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🔴 Critical ⏱ 15–90 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory openSUSE-SU-2025:15119-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-28834 CVE-2020-14001 Upstream summary: Kramdown before 2.3.1 does not restrict Rouge formatters to the Rouge::Formatters namespace, and thus arbitrary classes can be instantiated. Table of […]
How to Add a Swap File on an Arch Linux Cloud Server
In this article, we will discuss how to add a swap file to an Arch Linux cloud server. Linux uses swap spaces to offload information from the machine’s RAM, allowing for the most important processes more resources to operate.
Debian 10 — debian-edu-config — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 16 December 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2019-3467 CVE-2021-20001 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]
Oracle Linux 8 — Installation and Upgrade Issues (OL8-ISSUES-INSTALL)
🟠 High ⏱ 5–30 min Last verified: 15 December 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: Oracle Bug OLRNT-ol8-issues-install 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 […]
How to Configure NUMA Architecture on CentOS Stream 9
Introduction Setting up configure numa architecture on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure NUMA Architecture on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to keep in […]
AlmaLinux 8 — libgweather — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read • Source: AlmaLinux ALSA ALBA-2021:4196 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]
![How To Install Composer on Ubuntu 20.04 [Quickstart] — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/how-to-install-composer-on-ubuntu-20-04-quickstart-80552-featured.png "How To Install Composer on Ubuntu 20.04 [Quickstart] 8")
How To Install Composer on Ubuntu 20.04 [Quickstart]
In this quickstart guide, we’ll install Composer on an Ubuntu 20.04 server.
Debian 11 — speex — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 15 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2008-1686 CVE-2020-23903 Upstream summary: Array index vulnerability in Speex 1.1.12 and earlier, as used in libfishsound 0.9.0 and earlier, including Illiminable DirectShow Filters and Annodex Plugins for Firefox, […]
AlmaLinux 8 — mysql-selinux — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read • Source: AlmaLinux ALSA ALBA-2022:1952 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]
