Kernel Drivers

How to Schedule Tasks with Cron on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Schedule Tasks with Cron on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying schedule tasks with cron on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Schedule Tasks with Cron on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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Oracle Linux 9 — kernel — security and stability fixes — required update — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — kernel — security and stability fixes — required update (ELSA-2024-3619)

🟡 Medium   ⏱ 10–30 min  Last verified: 21 September 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-3619 Related CVEs: CVE-2024-26735 CVE-2024-26993 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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How to Configure Docker Log Rotation on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure Docker Log Rotation on Oracle Linux 9

Introduction How to Configure Docker Log Rotation on Oracle Linux 9 on Oracle Linux 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration […]

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How to Set Up HTTP/3 QUIC on Nginx on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up HTTP/3 QUIC on Nginx on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up set up http/3 quic on nginx on debian 12 on Bookworm leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bookworm freeze. Follow each step […]

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How to Enable OCSP Stapling on Nginx on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Enable OCSP Stapling on Nginx on Debian 12

Introduction This guide explains how to Enable OCSP Stapling on Nginx on Debian 12 on Debian 12 Bookworm. Debian Bookworm uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 12 install with […]

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Oracle Linux 9 — kernel — security and stability fixes — required update — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — kernel — security and stability fixes — required update (ELSA-2023-0334)

🟠 High   ⏱ 15–60 min  Last verified: 19 September 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-0334 Related CVEs: CVE-2022-4139 CVE-2022-3077 CVE-2022-2964 CVE-2022-43945 CVE-2022-2959 CVE-2022-30594 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 119991

Debian 12 – initramfs BusyBox Drop on Boot – Root Filesystem Recovery

🔴 Critical   ⏱ 5–30 min  Last verified: 19 September 2023 Affected versions: Debian 12 📖 ~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 117629

Ubuntu 20.04 LTS NIC Driver Not Loaded After Kernel Update

🟡 Medium   ⏱ 5–30 min  Last verified: 19 September 2023 📖 ~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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How to Install Packer on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Install Packer on Oracle Linux 9

Introduction How to Install Packer on Oracle Linux 9 on Oracle Linux 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible […]

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VMware ESXi 8.0 — vmxnet3 — ESXi vulnerability — VIB / vLCM patch and remediation guide — diagnosis and fix on VMware ESXi 8.0

VMware ESXi 8.0 — vmxnet3 — ESXi vulnerability — VIB / vLCM patch and remediation guide

🟠 Important   ⏱ 20–90 min  Last verified: 25 May 2026 Affected versions: VMware ESXi 8.0 📖 ~4 min read  •  Source: VMware advisory VMSA-2023-0001 Related CVEs: CVE-2023-20872 Fixed image profile / build: ESXi80U1a-21813344 Upstream summary: Stack buffer overflow in the vmxnet3 virtual network adapter (CVE-2023-20872) allows a guest with administrative privileges and a virtual […]

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