authorization

Common Problems 113996

RHEL 10 Rootless Podman Cannot Bind Privileged Ports

🟡 Medium   ⏱ 5–30 min  Last verified: 11 February 2026 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 […]

Read more
openSUSE Leap 15.6 — pam — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — pam — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory RHSA-2025:10027 (see also SUSE bugzilla) Related CVEs: CVE-2025-6020 CVE-2024-10041 Upstream summary: A flaw was found in linux-pam. The module pam_namespace may use access user-controlled paths without proper protection, allowing local users […]

Read more
Common Problems 113986

RHEL 10 SELinux AVC Denials After Custom Application Deployment

🟠 High   ⏱ 5–30 min  Last verified: 10 February 2026 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 […]

Read more
How to Install kubectl on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install kubectl on RHEL 10

Introduction Setting up install kubectl on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install kubectl on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and how to validate the result on […]

Read more
How to Write Conditional Statements in Python 3: Complete Guide (2025–2026)

How to Write Conditional Statements in Python 3: Complete Guide (2025–2026)

Learning how to write conditional statements in Python 3 is one of the most fundamental and frequently used skills in programming — conditional statements (if, elif, else) let your program make decisions, control flow, validate input, handle different cases, and respond intelligently to data, making them essential for almost every real-world Python script (games, automation, web apps, data analysis, CLI tools, AI logic).

Read more
Amazon Linux 2023 — krb5 — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — krb5 — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2026-1680 Related CVEs: CVE-2026-40355 CVE-2026-40356 CVE-2025-24528 CVE-2025-3576 CVE-2024-37370 CVE-2024-37371 CVE-2024-26458 CVE-2024-26461  +3 more Upstream summary: In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if […]

Read more
How to Configure rsnapshot Backups on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure rsnapshot Backups on RHEL 10

Introduction Setting up configure rsnapshot backups on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure rsnapshot Backups on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and how to validate the […]

Read more
How to Install Kotlin on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Kotlin on RHEL 10

Introduction How to Install Kotlin on RHEL 10 on RHEL 10 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 and production-safe. […]

Read more
How to Install Jenkins on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Install Jenkins on Oracle Linux 10

Introduction This tutorial demonstrates how to Install Jenkins on Oracle Linux 10 on Oracle Linux 10. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 10 system with the default AppStream […]

Read more
Common Problems 113913

RHEL 10 – firewalld rich rule not applied after reload – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 6 February 2026 Affected versions: RHEL 10 📖 ~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 & […]

Read more
CHAT