February 2021 - Page 8 of 62

Common Problems 114512

RHEL 9 Service Starts Manually but Not on Boot

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 📖 ~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 References & Further […]

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How to Configure Persistent Volumes in Kubernetes on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure Persistent Volumes in Kubernetes on SLES 12

Introduction This tutorial covers How to Configure Persistent Volumes in Kubernetes on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Disable Swap swapoff -a sed -i ‘/ […]

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Common Problems 114077

RHEL 10 – tuned profile not applied after reboot causing performance regression – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 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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FreeBSD 12 — py310-impacket — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py310-impacket — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-impacket — multiple path traversal vulnerabilities Related CVEs: CVE-2021-31800 Upstream summary: asolino reports: Multiple path traversal vulnerabilities exist in smbserver.py in Impacket through 0.9.22. An attacker that connects to a […]

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FreeBSD 12 — py39-impacket — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py39-impacket — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-impacket — multiple path traversal vulnerabilities Related CVEs: CVE-2021-31800 Upstream summary: asolino reports: Multiple path traversal vulnerabilities exist in smbserver.py in Impacket through 0.9.22. An attacker that connects to a […]

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How To Install Ruby on Rails on Ubuntu 12.04 from Source — step-by-step Linux tutorial on Progressive Robot

How To Install Ruby on Rails on Ubuntu 12.04 from Source

Ruby on Rails is an application stack that provides developers with a framework to quickly create a variety of web applications. Although Rails can be installed on a virtual private server with a variety of packages, it can also be download manually, from source. This tutorial will go over the manual installation of Ruby and Rails.

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How to Install PostgreSQL on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install PostgreSQL on Oracle Linux 8

Introduction This tutorial demonstrates how to Install PostgreSQL on Oracle Linux 8 on Oracle Linux 8. 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 8 system with the default AppStream […]

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