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Amazon Linux 2023 — javapackages-bootstrap — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — javapackages-bootstrap — multiple vulnerabilities (7 CVEs) — patch and remediation guide

  • June 1, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2026-1581 Related CVEs: CVE-2025-67030 CVE-2025-48734 CVE-2023-37460 CVE-2024-25710 CVE-2026-24400 CVE-2024-47554 CVE-2025-48924 Upstream summary: Directory Traversal vulnerability in the extractFile method of org.codehaus.plexus.util.Expand in plexus-utils before 6d780b3378829318ba5c2d29547e0012d5b29642. This allows an attacker to […]

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Common Problems 116034

Ubuntu 26.04 LTS – kubelet fails when swap remains enabled – Fix & Prevention

  • June 1, 2026
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 1 June 2026 Affected versions: Ubuntu 26.04 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 DNS Forwarding with Unbound on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure DNS Forwarding with Unbound on RHEL 10

  • June 1, 2026
  • Linux
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Introduction This tutorial demonstrates how to Configure DNS Forwarding with Unbound on RHEL 10 on RHEL 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 RHEL 10 system with the default AppStream […]

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Common Problems 116071

Ubuntu 26.04 LTS – Docker permission denied for non-root user – Fix & Prevention

  • June 1, 2026
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 1 June 2026 Affected versions: Ubuntu 26.04 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 Create Python Virtual Environments on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Create Python Virtual Environments on FreeBSD 15

Introduction Deploying create python virtual environments on a FreeBSD 15 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + ports […]

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How to Install Munin Monitoring on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install Munin Monitoring on FreeBSD 15

Introduction How to Install Munin Monitoring on FreeBSD 15 is a core administration task for any FreeBSD 15 server operator. FreeBSD 15 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet filtering, […]

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Common Problems 115972

Ubuntu 26.04 LTS – NVIDIA driver update causes black screen – Fix & Prevention

  • May 31, 2026
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 31 May 2026 Affected versions: Ubuntu 26.04 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 Perform a Minimal Installation of RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Perform a Minimal Installation of RHEL 10

  • May 31, 2026
  • Linux
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Introduction Setting up perform a minimal installation of rhel 10 on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Perform a Minimal Installation of RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, […]

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How to Install Graylog Log Management on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install Graylog Log Management on FreeBSD 15

Introduction FreeBSD 15 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install graylog log management on FreeBSD 15 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. This guide […]

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How to Set Up a FreeBSD Jail for Web Hosting on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Set Up a FreeBSD Jail for Web Hosting on FreeBSD 15

Introduction Deploying set up a freebsd jail for web hosting on a FreeBSD 15 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the […]

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