Kernel Drivers

How to Set Up OpenMPI on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Set Up OpenMPI 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 set up openmpi on IBM AIX 7.3 with practical […]

Read more
Common Problems 116973

Ubuntu 22.04 LTS – NVIDIA driver fails under Secure Boot module signing – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 7 August 2022 Affected versions: Ubuntu 22.04 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 […]

Read more
Oracle Linux 8 — kernel — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel — security and stability fixes — required update (ELSA-2020-4286)

🟠 High   ⏱ 15–60 min  Last verified: 6 August 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4286 Related CVEs: CVE-2020-14331 CVE-2020-14385 CVE-2020-12351 CVE-2020-14386 CVE-2020-12352 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

Read more
Common Problems 120615

Debian 11 Kernel Upgrade Leaves Old Kernels Unmanaged

🟢 Low   ⏱ 5–30 min  Last verified: 6 August 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 & […]

Read more
How to Configure OpenDKIM with Postfix on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure OpenDKIM with Postfix on Debian 11

Introduction Deploying configure opendkim with postfix 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 You will […]

Read more
Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide (ELSA-2022-9612)

🟠 High   ⏱ 15–60 min  Last verified: 6 August 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9612 Related CVEs: CVE-2022-21505 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
How to Configure Group Managed Service Accounts (gMSA) on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Group Managed Service Accounts (gMSA) on Windows Server 2016

How to Set Up Windows Server 2016 Group Managed Service Accounts Group Managed Service Accounts (gMSAs) extend the benefits of standalone Managed Service Accounts to multi-server environments. Introduced in Windows Server 2012, gMSAs are fully supported in Windows Server 2016 and allow multiple servers to share a single managed service account with automatic password rotation. […]

Read more
Common Problems 112395

Windows Server 2019 — AD user login fails with bad username/password despite correct credentials — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 5 August 2022 Affected versions: Windows Server 2019 📖 ~2 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 […]

Read more
How to Set Up borgbackup on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up borgbackup on Debian 11

Introduction Deploying set up borgbackup 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 You will need […]

Read more
Common Problems 125073

Oracle Linux 8 – Common Problem 011 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 3 August 2022 Affected versions: Oracle Linux 8 📖 ~3 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 […]

Read more
CHAT