Systemd Services

Oracle Linux 8 — curl — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — curl — security and stability fixes — required update (ELSA-2020-4599)

🟡 Medium   ⏱ 10–30 min  Last verified: 4 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4599 Related CVEs: CVE-2020-8177 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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How to Set Up Istio Service Mesh on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Istio Service Mesh on Oracle Linux 8

Introduction Setting up set up istio service mesh on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Istio Service Mesh on Oracle Linux 8, with all the commands you need, the SELinux and firewalld […]

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SLES 15 — xtrans — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — xtrans — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 4 October 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:3189-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-25697 Upstream summary: A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw allows an […]

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Alpine Linux edge — axel — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — axel — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2.17.8-r0 📖 ~4 min read  •  Source: Alpine secdb entry — axel 2.17.8-r0 Related CVEs: CVE-2020-13614 Upstream summary: Alpine main repository for vedge ships axel 2.17.8-r0 which addresses CVE-2020-13614. Table of contents Symptom & Impact Environment […]

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How to Set Up MariaDB Galera Cluster on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up MariaDB Galera Cluster on Debian 9

Introduction Deploying set up mariadb galera cluster on debian 9 on a Debian 9 Stretch 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 […]

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Oracle Linux 8 — Kernel Issues — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Kernel Issues (8-KERNEL-ISSUES)

🟠 High   ⏱ 5–30 min  Last verified: 3 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug OLRNB-ol8-issues-kernel 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 […]

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How to Set Up Podman on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Podman on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying set up podman on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up Podman on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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How to Configure Lightweight User Environments with WPARs on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure Lightweight User Environments with WPARs 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 configure lightweight user environments with wpars on ibm aix […]

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How to Use the Korn Shell (ksh) on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use the Korn Shell (ksh) 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 the korn shell (ksh) on ibm aix 7.2 […]

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

Arch Linux — okular — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202003-10 Related CVEs: CVE-2020-9359 Upstream summary: Type: arbitrary command execution. Status: Fixed. Affected: 19.12.3-2. Fixed in: 19.12.3-3. Group: AVG-1113. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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