Kernel Drivers

How to Enable Brotli Compression on Nginx on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Enable Brotli Compression on Nginx on Debian 12

Introduction How to Enable Brotli Compression on Nginx on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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How to Set Up Checkmk on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up Checkmk on Oracle Linux 9

Introduction How to Set Up Checkmk 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 […]

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How to Install and Configure Squid Proxy on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install and Configure Squid Proxy on Debian 12

Introduction This guide explains how to Install and Configure Squid Proxy 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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Amazon Linux 2 — kernel-livepatch-5.10.149-133.644 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-5.10.149-133.644 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2023-105 Related CVEs: CVE-2022-3524 CVE-2022-3594 CVE-2022-3623 CVE-2022-4378 Upstream summary: A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function ipv6_renew_options […]

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How to Configure iSCSI Target and Initiator on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure iSCSI Target and Initiator on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up configure iscsi target and initiator 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 carefully […]

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Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2025-20530)

🟠 High   ⏱ 15–60 min  Last verified: 2 July 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-20530 Related CVEs: CVE-2012-3430 CVE-2015-6937 CVE-2016-5244 CVE-2018-12928 CVE-2018-5332 CVE-2018-5333 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 Install Loki Log Aggregation on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install Loki Log Aggregation on Debian 12

Introduction How to Install Loki Log Aggregation on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. […]

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How to Install Ruby on Rails on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install Ruby on Rails on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up install ruby on rails 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 carefully and […]

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How to Install Redis on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install Redis on Debian 12

Introduction How to Install Redis on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. This tutorial […]

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How to Set Up OpenVPN on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up OpenVPN on Oracle Linux 9

Introduction How to Set Up OpenVPN 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 […]

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