Kernel Drivers

How to Install PHP 8.2 CLI on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install PHP 8.2 CLI on Debian 12

Introduction How to Install PHP 8.2 CLI 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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Common Problems 117001

Ubuntu 22.04 LTS – /boot full prevents kernel updates – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 13 November 2023 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 […]

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How to Configure a Python uWSGI Application Server on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure a Python uWSGI Application Server on Debian 12

Introduction This guide explains how to Configure a Python uWSGI Application Server 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 […]

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How to Set Up X11 Forwarding on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Set Up X11 Forwarding on IBM AIX 7.1

Introduction IBM AIX 7.1 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 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to set up x11 forwarding on ibm aix 7.1 on […]

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How to Set Up pgBouncer Connection Pooler on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up pgBouncer Connection Pooler on Debian 12

Introduction Deploying set up pgbouncer connection pooler on debian 12 on a Debian 12 Bookworm 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 […]

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How to Configure Postfix Mail Server on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Postfix Mail Server on Debian 12

Introduction This guide explains how to Configure Postfix Mail Server 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 the […]

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Amazon Linux 2 — kernel-livepatch-4.14.304-226.531 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.304-226.531 — vulnerability — 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-2023-113 Related CVEs: CVE-2023-26545 Upstream summary: In the Linux kernel before 6.1.13, there is a double free in net/mpls/af_mpls.c upon an allocation failure (for registering the sysctl table under a […]

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

How to Install Netdata Monitoring on Debian 12

Introduction Deploying install netdata monitoring on debian 12 on a Debian 12 Bookworm 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 […]

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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-2023-0951)

🟠 High   ⏱ 15–60 min  Last verified: 10 November 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-0951 Related CVEs: CVE-2023-0179 CVE-2022-4378 CVE-2022-4379 CVE-2022-2873 CVE-2022-3564 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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How to Deploy Applications with Helm on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Deploy Applications with Helm on CentOS Stream 9

Introduction How to Deploy Applications with Helm on CentOS Stream 9 on CentOS Stream 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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