Boot Startup

How to Configure Dynamic LPAR (DLPAR) on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Configure Dynamic LPAR (DLPAR) on IBM AIX 7.3

Introduction IBM AIX 7.3 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 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure dynamic lpar (dlpar) on IBM AIX 7.3 with […]

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How to Set Up FTP Server with vsftpd on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up FTP Server with vsftpd on Debian 11

Introduction Deploying set up ftp server with vsftpd on debian 11 on a Debian 11 Bullseye 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 […]

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SLES 15 — u-boot-rpi3 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — u-boot-rpi3 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 15 September 2022 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:2052-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-30790 CVE-2022-34835 CVE-2022-30552 CVE-2020-8432 CVE-2019-13103 CVE-2019-13104 CVE-2019-13106 CVE-2019-14192  +12 more Upstream summary: Das U-Boot 2022.01 has a Buffer Overflow, a different issue than CVE-2022-30552. Table […]

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Common Problems 120555

Debian 11 Boot Stalls on Emergency Mode

🔴 Critical   ⏱ 5–30 min  Last verified: 14 September 2022 Affected versions: Debian 11 📖 ~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 115465

RHEL 7 NFS Mount Fails During Boot

🟠 High   ⏱ 5–30 min  Last verified: 14 September 2022 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 IBM Spectrum Protect (TSM) Client on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Configure IBM Spectrum Protect (TSM) Client on IBM AIX 7.3

Introduction IBM AIX 7.3 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 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure ibm spectrum protect (tsm) client on IBM AIX […]

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How to Configure TCP Wrappers on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure TCP Wrappers on Debian 9

Introduction Deploying configure tcp wrappers 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 Ensure Debian 9 […]

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How to Install Checkmk on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install Checkmk on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up install checkmk on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each step carefully and the resulting […]

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Common Problems 120689

Debian 11 – kernel panic after update due to incompatible third-party module

🔴 Critical   ⏱ 5–30 min  Last verified: 13 September 2022 Affected versions: Debian 11 📖 ~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 Trace System Calls with truss on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Trace System Calls with truss on IBM AIX 7.3

Introduction IBM AIX 7.3 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 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to trace system calls with truss on IBM AIX 7.3 […]

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