Logging Monitoring

Common Problems 116099

Ubuntu 26.04 LTS – LVM thin pool reaches 100% and new writes fail

🟠 High   ⏱ 5–30 min  Last verified: 5 August 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 114011

RHEL 10 – subscription-manager repositories disabled unexpectedly – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 5 August 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 & […]

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Common Problems 116109

Ubuntu 26.04 LTS – Docker overlay2 fills root disk and containers fail to start

🟠 High   ⏱ 5–30 min  Last verified: 5 August 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 116052

Ubuntu 26.04 LTS – boot drops to initramfs BusyBox shell – Fix & Prevention (FIX-PREVENTION-2)

🟠 High   ⏱ 5–30 min  Last verified: 5 August 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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Common Problems 115905

Ubuntu 26.04 LTS – Broken dependencies after interrupted upgrade – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 4 August 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 PHP-FPM with Nginx on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Configure PHP-FPM with Nginx on Ubuntu 26.04

PHP-FPM (FastCGI Process Manager) is the recommended way to run PHP behind Nginx. It manages PHP worker processes efficiently, supports dynamic/static/ondemand process management, and provides per-pool configuration for multi-tenant servers. This guide configures PHP-FPM 8.4 with Nginx on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Nginx installed […]

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Common Problems 116134

Ubuntu 26.04 LTS – GNOME Shell crashes due to extension conflicts – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 4 August 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 Nginx Server Blocks (Virtual Hosts) on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install OpenLiteSpeed Web Server on Ubuntu 26.04

OpenLiteSpeed (OLS) is a high-performance, event-driven open-source web server from LiteSpeed Technologies. It supports PHP via LiteSpeed SAPI (LSPHP) and includes a built-in WebAdmin GUI. It is significantly faster than Apache for PHP workloads and is a popular choice for WordPress hosting. This guide installs and configures OLS on Ubuntu 26.04 LTS. Tested and valid […]

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Common Problems 122003

PF Rules Accidentally Block Outbound Traffic

🟡 Medium   ⏱ 5–30 min  Last verified: 4 August 2026 Affected versions: FreeBSD 15 📖 ~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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NetBSD 10.0 — mold — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — mold — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2026-3994 Upstream summary: pkgsrc audit-packages flagged mold-[0-9]* for vulnerability class 'heap-overflow'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-3994 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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