Package Management

How to Configure HTTP/2 on Nginx on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure HTTP/2 on Nginx on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up configure http/2 on nginx on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully and […]

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openSUSE Tumbleweed — uudeview — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — uudeview — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2008-2266 Upstream summary: uulib/uunconc.c in UUDeview 0.5.20, as used in nzbget before 0.3.0 and possibly other products, allows local users to overwrite arbitrary files via […]

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Common Problems 115416

RHEL 7 firewalld Blocking Internal Application Port

🟠 High   ⏱ 5–30 min  Last verified: 27 June 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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How to Configure auditd System Auditing on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure auditd System Auditing on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure auditd system auditing on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully and […]

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How to Use Podman on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use Podman on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use podman on ibm aix 7.2 on IBM AIX […]

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How to Configure Apache2 Virtual Hosts on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Apache2 Virtual Hosts on Debian 10

Introduction Deploying configure apache2 virtual hosts on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before you […]

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Ubuntu 18.04 — db5.3 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — db5.3 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 June 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4004-1 Related CVEs: CVE-2019-8457 Upstream summary: It was discovered that Berkeley DB incorrectly handled certain inputs. An attacker could possibly use this issue to read sensitive information. Table of contents […]

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How to Install and Use Skopeo for Container Image Management on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install and Use Skopeo for Container Image Management on RHEL 8

Skopeo is a command-line tool for working with container images and registries without requiring a running container daemon. On RHEL 8 it is available directly from the default repositories, making it one of the easiest container tools to install and use. Unlike Docker CLI, Skopeo can inspect, copy, sync, and delete images across registries without […]

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Common Problems 121004

Debian 10 – unattended-upgrades lock prevents manual apt operations

🟡 Medium   ⏱ 5–30 min  Last verified: 26 June 2020 Affected versions: Debian 10 📖 ~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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