Kernel Drivers

Oracle Linux 10 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2026-50060)

🟠 High   ⏱ 15–60 min  Last verified: 4 September 2025 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-50060 Related CVEs: CVE-2025-40248 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 a Private CA with step-ca on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Set Up a Private CA with step-ca on Debian 13

Introduction Deploying set up a private ca with step-ca on a Debian 13 Trixie 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 […]

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Common Problems 114130

RHEL 10 – dnf offline-upgrade leaves system in partial transaction state – Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 3 September 2025 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

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How to Deploy a Spring Boot Application on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Deploy a Spring Boot Application on Oracle Linux 10

Introduction Oracle Linux 10 ships with a stable, security-hardened base that makes deploying deploy a spring boot application on oracle linux 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Deploy a Spring Boot Application on Oracle Linux 10, including dnf module streams where applicable, systemd unit management, and the […]

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How to Configure an iSCSI Initiator on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure an iSCSI Initiator on Debian 13

Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up configure an iscsi initiator on Trixie leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Trixie freeze. Follow each step carefully and the resulting configuration […]

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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-2025-20552)

🟠 High   ⏱ 15–60 min  Last verified: 3 September 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-20552 Related CVEs: CVE-2024-26726 CVE-2024-57883 CVE-2025-37948 CVE-2025-37958 CVE-2025-37963 CVE-2025-38000 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 PostgreSQL Connection Pooling with PgBouncer on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure PostgreSQL Connection Pooling with PgBouncer on Debian 13

Introduction This guide explains how to Configure PostgreSQL Connection Pooling with PgBouncer on Debian 13 on Debian 13 Trixie. Debian Trixie 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 13 install […]

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Common Problems 113980

RHEL 10 – SELinux AVC denials break custom web application after update – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 September 2025 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

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How to Configure Dovecot IMAP Server on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Dovecot IMAP Server on Debian 13

Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up configure dovecot imap server on Trixie leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Trixie freeze. Follow each step carefully and the resulting configuration […]

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How to Install Kibana on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Kibana on Debian 13

Introduction Deploying install kibana on a Debian 13 Trixie 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 a registered Debian 13 […]

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