Troubleshooting

How to Configure Chef Client on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure Chef Client 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 chef client on ibm aix 7.2 on IBM […]

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How to Configure WSUS on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure WSUS on Windows Server 2012 R2

How to Configure WSUS on Windows Server 2012 R2 Windows Server Update Services (WSUS) provides centralised management of Microsoft update distribution within an organisation. Rather than each server and workstation downloading updates individually from Microsoft Update servers, WSUS downloads updates once to a central server and then distributes them to managed endpoints on your schedule. […]

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How to Set Timezone and NTP on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Timezone and NTP on Oracle Linux 8

Introduction This tutorial demonstrates how to Set Timezone and NTP on Oracle Linux 8 on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with the […]

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Ubuntu 20.04 — fossil — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — fossil — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 December 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6770-1 Related CVEs: https://launchpad.net/bugs/2064509 Upstream summary: USN-6729-1 fixed vulnerabilities in Apache HTTP Server. The update lead to the discovery of a regression in Fossil with regards to the handling of […]

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

Oracle Linux 8 — libreswan — security and stability fixes — required update (ELSA-2023-3095)

🟡 Medium   ⏱ 10–30 min  Last verified: 13 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-3095 Related CVEs: CVE-2023-23009 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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SLES 15 — spice-vdagent — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — spice-vdagent — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 December 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:3268-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-25653 CVE-2020-25650 CVE-2020-25651 CVE-2020-25652 CVE-2017-15108 Upstream summary: A race condition vulnerability was found in the way the spice-vdagentd daemon handled new client connections. This flaw […]

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Common Problems 118626

Ubuntu 16.04 locale warnings cannot set LC_ALL

🟡 Medium   ⏱ 5–30 min  Last verified: 13 December 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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Common Problems 113606

Windows Server 2012 R2 – WFP callout driver blocks RPC and domain traffic – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 13 December 2020 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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Oracle Linux 8 — httpd:2.4 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — httpd:2.4 — vulnerability — patch and remediation guide (ELSA-2022-5163)

🟢 Low   ⏱ 5–15 min  Last verified: 13 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-5163 Related CVEs: CVE-2020-13950 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 Install Docker Compose on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install Docker Compose on Oracle Linux 8

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

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