Package Management

How to Build Grafana Dashboards for Linux Server Metrics on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Build Grafana Dashboards for Linux Server Metrics on RHEL 8

Grafana transforms raw Prometheus time-series data into actionable visual dashboards through a drag-and-drop interface backed by the powerful PromQL query language. On RHEL 8 with Prometheus and Node Exporter already collecting host metrics, you can build a professional server monitoring dashboard in under an hour — displaying CPU usage, memory consumption, disk I/O, and network […]

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Common Problems 115601

Yum Dependency Conflicts After Enabling EPEL on RHEL 7

🟡 Medium   ⏱ 5–30 min  Last verified: 4 July 2020 📖 ~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 & Cross-Refs References & Further […]

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How to Create and Manage WPARs on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Create and Manage WPARs on IBM AIX 7.1

Introduction IBM AIX 7.1 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 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to create and manage wpars on ibm aix 7.1 on […]

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How to Install PHP 8.3 on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Install PHP 8.3 on SLES 12

Introduction This tutorial covers How to Install PHP 8.3 on SLES 12 on SLES 12. SLES 12 (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. Step 1 — Install PHP zypper install -y php8 php8-fpm php8-mysql php8-curl […]

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SLES 15 — xpp3 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — xpp3 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 July 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:0906-1 Related CVEs: CVE-2020-28477 CVE-2020-26217 CVE-2020-26258 CVE-2020-26259 Upstream summary: This affects all versions of package immer. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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How to Set Up WebSphere Application Server on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Set Up WebSphere Application Server 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 set up websphere application server on ibm aix 7.2 […]

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

Oracle Linux 8 — ghostscript — vulnerability — patch and remediation guide (ELSA-2024-2966)

🟢 Low   ⏱ 5–15 min  Last verified: 4 July 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-2966 Related CVEs: CVE-2020-21710 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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openSUSE Tumbleweed — jakarta-taglibs-standard — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — jakarta-taglibs-standard — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2017:1568-1 (see also SUSE bugzilla) Related CVEs: CVE-2015-0254 Upstream summary: Apache Standard Taglibs before 1.2.3 allows remote attackers to execute arbitrary code or conduct external XML entity (XXE) attacks via a crafted […]

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How to Set Up Docker Registry with Authentication on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Docker Registry with Authentication on Debian 10

Introduction How to Set Up Docker Registry with Authentication on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from […]

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

Oracle Linux 8 — thunderbird — vulnerability — patch and remediation guide (ELSA-2020-5146)

🟠 High   ⏱ 15–60 min  Last verified: 4 July 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-5146 Related CVEs: CVE-2020-26950 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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