IT, Cloud & DevOps Blog

How To Protect Your Linux Server Against the GHOST Vulnerability — step-by-step Linux tutorial on Progressive Robot

How To Protect Your Linux Server Against the GHOST Vulnerability

On January 27, 2015, a GNU C Library (glibc) vulnerability, referred to as the GHOST vulnerability, was announced to the general public. In summary, the vulnerability allows remote attackers to take complete control of a system by exploiting a buffer overflow bug in glibc. It is highly recommended that you update and reboot all of your affected Linux servers. We will show you how to test if your systems are vulnerable and, if they are, how to update glibc to fix the vulnerability.

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Como Instalar o WordPress com LAMP no Debian 10 — step-by-step Linux tutorial on Progressive Robot

Como Instalar o WordPress com LAMP no Debian 10

O WordPress é o CMS (sistema de gerenciamento de conteúdos) mais popular na Internet. Ele permite que você configure blogs e sites flexíveis com facilidade, em cima de um back-end em MariaDB com processamento em PHP. A adoção do WordPress teve um crescimento incrível, sendo uma…

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Arch Linux — blueman — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — blueman — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202012-12 Related CVEs: CVE-2020-15238 Upstream summary: Type: privilege escalation. Status: Fixed. Affected: 2.1.3-1. Fixed in: 2.1.4-1. Group: AVG-1259. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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How To Install MySQL on CentOS — step-by-step Linux tutorial on Progressive Robot

How To Install MySQL on CentOS

MySQL is an open-source database management system. CentOS prefers MariaDB by default, a fork of MySQL managed by the original MySQL developers and designed as a replacement for MySQL. Unless you have a specific use-case for MySQL, see the [How To Install MariaDB on CentOS](https://www.progressiverobot.com/how-to-install-mariadb-on-centos-7/) guide.

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How to Install Symfony on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Symfony on RHEL 7

How to Install Symfony on RHEL 7 Symfony is a mature, enterprise-grade PHP framework built around reusable components that power projects ranging from small APIs to large-scale e-commerce platforms. Many PHP projects, including Drupal, Laravel, and Magento, depend directly on Symfony components. Installing Symfony on RHEL 7 follows a similar pattern to other PHP frameworks: […]

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Common Problems 118419

Ubuntu 16.04 LTS Netplan Migration Error Leaves Host Offline

🟠 High   ⏱ 5–30 min  Last verified: 24 March 2020 Affected versions: 16.04 LTS 📖 ~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 & […]

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How to Configure OpenTelemetry Collector on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Configure OpenTelemetry Collector on SLES 15

Introduction This tutorial covers How to Configure OpenTelemetry Collector on SLES 15 on SLES 15. SLES 15 (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 15 system is up to date: zypper refresh […]

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Common Problems 115556

RHEL 7 service httpd Starts but Health Check Still Fails

🟠 High   ⏱ 5–30 min  Last verified: 24 March 2020 Affected versions: RHEL 7 📖 ~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 & […]

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FreeBSD 12 — postgresql96-client — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — postgresql96-client — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: PostgreSQL vulnerabilities Related CVEs: CVE-2016-5423 CVE-2016-5424 Upstream summary: The PostgreSQL project reports: Security Fixes nested CASE expressions + database and role names with embedded special characters CVE-2017-7484: selectivity estimators bypass […]

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