Operations

Ubuntu 20.04 — node-tar — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — node-tar — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 April 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5283-1 Related CVEs: CVE-2021-32803 Upstream summary: It was discovered that Tar for Node.js did not properly sanitize path inputs. An attacker could possibly use this issue to read arbitrary files, […]

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AlmaLinux 8 — ppp — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — ppp — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2020:0633 Related CVEs: CVE-2020-8597 Upstream summary: The ppp packages contain the Point-to-Point Protocol (PPP) daemon and documentation for PPP support. The PPP protocol provides a method for transmitting datagrams over serial point-to-point […]

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Amazon Linux 2 — libgcrypt — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — libgcrypt — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2022-1769 Related CVEs: CVE-2021-33560 Upstream summary: A side-channel attack flaw was found in the way libgcrypt implemented Elgamal encryption. This flaw allows an attacker to decrypt parts of ciphertext encrypted […]

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How to Install and Configure cAdvisor for Container Monitoring on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install and Configure cAdvisor for Container Monitoring on RHEL 7

How to Install and Configure cAdvisor for Container Monitoring on RHEL 7 cAdvisor (Container Advisor) is an open-source agent developed by Google that collects, aggregates, processes, and exports resource usage and performance metrics for running containers. It provides a real-time web UI and a Prometheus-compatible metrics endpoint, making it the standard solution for container observability […]

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Oracle Linux 8 — qt5 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — qt5 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-7482)

🟡 Medium   ⏱ 10–30 min  Last verified: 3 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7482 Related CVEs: CVE-2022-25255 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Common Problems 119131

Ubuntu 14.04 LTS CIFS mount authentication fails after password rotation

🟡 Medium   ⏱ 5–30 min  Last verified: 3 April 2021 Affected versions: 14.04 📖 ~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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How to Install Telegraf on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Install Telegraf on SLES 12

Introduction This tutorial covers How to Install Telegraf 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. Prerequisites Ensure your SLES 12 system is up to date: zypper refresh && […]

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Common Problems 112916

Windows Server 2016 NTFS MFT Fragmentation Causing Slow File Enumeration – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 3 April 2021 Affected versions: Windows Server 2016 📖 ~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 112482

Windows Server 2019 – SmartScreen blocking unsigned internal installers – Fix & Prevention

🟢 Low   ⏱ 5–30 min  Last verified: 3 April 2021 Affected versions: Windows Server 2019 📖 ~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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