Linux

Oracle Linux 8 — poppler — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — poppler — vulnerability — patch and remediation guide (ELSA-2024-2979)

🟡 Medium   ⏱ 10–30 min  Last verified: 7 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-2979 Related CVEs: CVE-2020-36024 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Sysadmin eBook: Making Servers Work — step-by-step Linux tutorial on Progressive Robot

Sysadmin eBook: Making Servers Work

This book is written with the belief that familiarity with some core areas of system administration will benefit anyone who uses computers, from individuals who would like to learn how to automate their systems and day-to-day tasks, to teams running thousands of servers in datacenters. This book highlights practical sysadmin skills, common architectures that you’ll encounter, and best practices that apply to automating and running systems at any scale, from one laptop or server to 1,000

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Como Instalar e Utilizar o Composer no Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Como Instalar e Utilizar o Composer no Ubuntu 20.04

O Composer é uma ferramenta popular de gerenciamento de dependências para o PHP, criado principalmente para facilitar a instalação e a atualização das dependências do projeto. Ele verificará de quais outros pacotes um projeto específico depende e os…

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SLES 12 — mutt — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — mutt — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 7 October 2020 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2018:2084-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-14354 CVE-2018-14360 CVE-2018-14361 CVE-2020-14093 CVE-2020-14154 CVE-2020-14954 CVE-2018-14351 CVE-2018-14357  +12 more Upstream summary: An issue was discovered in Mutt before 1.10.1 and NeoMutt before 2018-07-16. They […]

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How to Set Up a Load-Balanced PostgreSQL Cluster with Patroni on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

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, […]

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Additional Recommended Steps for New CentOS 7 Servers — step-by-step Linux tutorial on Progressive Robot

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.

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