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Common Problems 115899

Ubuntu 26.04 LTS – dist-upgrade aborts with held broken packages

🟠 High   ⏱ 5–30 min  Last verified: 10 May 2026 Affected versions: Ubuntu 26.04 LTS Ubuntu 26.04 Ubuntu 26.04.1 📖 ~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 […]

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Common Problems 115990

Ubuntu 26.04 LTS unattended-upgrades Stuck and Holding dpkg

🟡 Medium   ⏱ 5–30 min  Last verified: 10 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 Install Java OpenJDK 17 on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Java OpenJDK 17 on RHEL 10

Introduction This tutorial demonstrates how to Install Java OpenJDK 17 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 repositories […]

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Common Problems 116080

Ubuntu 26.04 LTS sudo Broken by Invalid sudoers Syntax

🔴 Critical   ⏱ 5–30 min  Last verified: 10 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 Encrypt Disk Partitions with GELI on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Encrypt Disk Partitions with GELI on FreeBSD 15

Introduction Deploying encrypt disk partitions with geli 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 + […]

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Common Problems 116023

Disk Full from System Logs on Ubuntu 26.04 LTS

🟠 High   ⏱ 5–30 min  Last verified: 10 May 2026 Affected versions: 26.04 📖 ~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 & Cross-Refs […]

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SLES 16 — pam — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — pam — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 10 May 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2020-27780 CVE-2025-6020 CVE-2024-10041 CVE-2010-3430 CVE-2010-3431 CVE-2010-3853 CVE-2011-3148 CVE-2014-2583  +5 more Upstream summary: A flaw was found in Linux-Pam in versions prior to 1.5.1 in the […]

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How to Set Up Cron Jobs on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Set Up Cron Jobs on FreeBSD 15

Introduction This guide explains how to Set Up Cron Jobs on FreeBSD 15 on FreeBSD 15. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained […]

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Common Problems 115898

Ubuntu 26.04 LTS – apt update fails with NO_PUBKEY for third-party repo – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 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 Configure Persistent Volumes in Kubernetes on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure Persistent Volumes in Kubernetes on RHEL 10

Introduction This tutorial demonstrates how to Configure Persistent Volumes in Kubernetes 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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