Kernel Drivers

How to Set Up Uptime Kuma Monitoring on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up Uptime Kuma Monitoring on Debian 12

Introduction This guide explains how to Set Up Uptime Kuma Monitoring 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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How to Deploy a CakePHP Application on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Deploy a CakePHP Application on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying deploy a cakephp application on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Deploy a CakePHP Application on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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

How to Install Nginx on Debian 12

Introduction This guide explains how to Install 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 the standard repositories […]

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Common Problems 120065

Debian 12 GRUB Rescue Prompt Recovery

🔴 Critical   ⏱ 5–30 min  Last verified: 17 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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How to Configure Persistent Volumes in Kubernetes on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure Persistent Volumes in Kubernetes on CentOS Stream 9

Introduction How to Configure Persistent Volumes in Kubernetes 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 […]

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How to Set Up High Availability with Pacemaker on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up High Availability with Pacemaker on Oracle Linux 9

Introduction How to Set Up High Availability with Pacemaker 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 […]

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How to Set Up Dovecot IMAP Server on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up Dovecot IMAP Server on Debian 12

Introduction This guide explains how to Set Up Dovecot IMAP 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 […]

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How to Configure DNS Resolution on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure DNS Resolution on Oracle Linux 9

Introduction How to Configure DNS Resolution 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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NetBSD 9.4 — xenkernel413 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — xenkernel413 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2022-26362 CVE-2022-26363 CVE-2022-26364 CVE-2020-28368 CVE-2022-26356 CVE-2022-33745 CVE-2022-33748 CVE-2020-25595  +12 more Upstream summary: pkgsrc audit-packages flagged xenkernel413<4.13.4nb1 for vulnerability class 'privilege-escalation'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2022-26362 Table of contents Symptom & Impact Environment […]

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How to Set Up Nexus Repository Manager on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up Nexus Repository Manager on Debian 12

Introduction How to Set Up Nexus Repository Manager 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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