Kernel Drivers

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-2023-12786)

🟠 High   ⏱ 15–60 min  Last verified: 18 January 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-12786 Related CVEs: CVE-2022-40982 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 Set Up MySQL with SSL on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up MySQL with SSL on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying set up mysql with ssl on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up MySQL with SSL on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the […]

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Common Problems 117508

Ubuntu 20.04 LTS – cloud-init stalls and first boot never completes

🟠 High   ⏱ 5–30 min  Last verified: 16 January 2022 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]

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Common Problems 113086

Windows Server 2016 Backup CBT Driver Increases Kernel I/O Latency – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 16 January 2022 Affected versions: Windows Server 2016 📖 ~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 Set Up a FreeBSD Jail for Web Hosting on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up a FreeBSD Jail for Web Hosting on FreeBSD 13 (FREEBSD-13-2)

Introduction How to Set Up a FreeBSD Jail for Web Hosting on FreeBSD 13 is a core administration task for any FreeBSD 13 server operator. FreeBSD 13 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service […]

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Common Problems 113500

Windows Server 2012 R2 — UPN suffix routing fails for users in trusted forest — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 15 January 2022 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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How to Write Advanced PowerShell Scripts for Windows Server 2016 Administration — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Write Advanced PowerShell Scripts for Windows Server 2016 Administration

Introduction Advanced PowerShell scripting transforms Windows Server 2016 administration from a manual, time-intensive process into a streamlined, automated workflow. This guide covers advanced scripting patterns, error handling, modules, and real-world automation scenarios every Windows Server 2016 administrator should master. PowerShell Execution Policy and Script Signing Before deploying advanced scripts, configure an appropriate execution policy and […]

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How to Secure Apache with Let's Encrypt and Certbot on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Secure Apache with Let’s Encrypt and Certbot on RHEL 7

How to Secure Apache with Let’s Encrypt and Certbot on RHEL 7 Running your Apache web server over plain HTTP exposes your users to traffic interception and degrades trust in modern browsers. Let’s Encrypt provides free, trusted TLS certificates that can be automated entirely on the command line. Certbot is the official Let’s Encrypt client […]

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Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2024-1607)

🟠 High   ⏱ 15–60 min  Last verified: 13 January 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-1607 Related CVEs: CVE-2022-38096 CVE-2021-33631 CVE-2023-6931 CVE-2023-6546 CVE-2024-0565 CVE-2024-1086 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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How to Configure iSCSI Storage on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure iSCSI Storage on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying configure iscsi storage on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure iSCSI Storage on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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