chris

Common Problems 121491

Debian 9 – GRUB Rescue Prompt After Kernel Update – Restore Bootability

🔴 Critical   ⏱ 5–30 min  Last verified: 19 August 2019 Affected versions: Debian 9 📖 ~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 NUMA Architecture on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Configure NUMA Architecture on SLES 15

Introduction This tutorial covers How to Configure NUMA Architecture 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 119090

Ubuntu 14.04 LTS CIFS Mount Fails at Boot with Credential Timing

🟡 Medium   ⏱ 5–30 min  Last verified: 19 August 2019 Affected versions: 14.04 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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Common Problems 118587

Ubuntu 16.04 LTS severe swap thrashing and performance collapse

🟡 Medium   ⏱ 5–30 min  Last verified: 19 August 2019 📖 ~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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FreeBSD 12 — irssi-devel — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — irssi-devel — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: irssi — multiple vulnerabilities Related CVEs: CVE-2010-1155 CVE-2010-1156 Upstream summary: Two vulnerabilities have found in irssi. The first issue could allow man-in-the-middle attacks due to a missing comparison of SSL […]

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openSUSE Tumbleweed — cscope — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — cscope — multiple vulnerabilities (2 CVEs) — 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-2004-2541 CVE-2006-4262 Upstream summary: Buffer overflow in Cscope 15.5, and possibly multiple overflows, allows remote attackers to execute arbitrary code via a C file with […]

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

How to Configure Ceph Cluster on SLES 15

Introduction This tutorial covers How to Configure Ceph Cluster 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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How to Use AIX WPAR Manager on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Use AIX WPAR Manager 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 use aix wpar manager on ibm aix 7.1 on […]

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FreeBSD 12 — pcal — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — pcal — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pcal — buffer overflow vulnerabilities Related CVEs: CVE-2004-1289 Upstream summary: Danny Lungstrom has found two buffer overflow vulnerabilities in pcal which can lead to execution of arbitrary code by making […]

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Webinar Series: Deploying and Scaling Microservices in Kubernetes — step-by-step Docker tutorial on Progressive Robot

Webinar Series: Deploying and Scaling Microservices in Kubernetes

In this tutorial, you will apply the concepts from the previous tutorials to build, deploy, and manage an end-to-end microservices application in Kubernetes. The sample web application you’ll use in this tutorial is a “todo list” application written in Node.js that uses MongoDB as a database. You’ll build a container image for this app from a Dockerfile, and push the image to Docker Hub, and then deploy it to your cluster. Then you’ll scale the app to meet increased demand.

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