Fix Prevention

Debian 9 — systemd — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — systemd — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 August 2019 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-16864 CVE-2019-3842 CVE-2019-6454 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

Read more
Debian 10 — libwebp — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — libwebp — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 August 2019 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-25009 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
FreeBSD 12 — rubygem18-json — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — rubygem18-json — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Ruby — Denial of Service and Unsafe Object Creation Vulnerability in JSON Related CVEs: CVE-2013-0269 Upstream summary: Aaron Patterson reports: When parsing certain JSON documents, the JSON gem can be […]

Read more
Common Problems 118918

Ubuntu 14.04 LTS – apt update fails because dpkg lock is held

🟠 High   ⏱ 5–30 min  Last verified: 13 August 2019 Affected versions: Ubuntu 14.04 LTS Ubuntu 14.04 Ubuntu 14.04.6 📖 ~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 […]

Read more
Common Problems 118454

Ubuntu 16.04 LTS high load average caused by I/O wait saturation

🟠 High   ⏱ 5–30 min  Last verified: 13 August 2019 Affected versions: 16.04 📖 ~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 […]

Read more
Common Problems 118417

Ubuntu 16.04 LTS SSH permission denied (publickey)

🟡 Medium   ⏱ 5–30 min  Last verified: 13 August 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 & Cross-Refs References & Further […]

Read more
Common Problems 115561

Yum Update Fails Due to Insufficient /var Cache Space

🟡 Medium   ⏱ 5–30 min  Last verified: 13 August 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 & Cross-Refs References & Further […]

Read more
Common Problems 115541

LVM Root Volume Full Causing Service Startup Failures

🟡 Medium   ⏱ 5–30 min  Last verified: 13 August 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 & Cross-Refs References & Further […]

Read more
Common Problems 115017

HTTP Service Starts but SELinux Blocks Outbound Connection

🟡 Medium   ⏱ 5–30 min  Last verified: 13 August 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 & Cross-Refs References & Further […]

Read more
How to Configure Windows Performance Monitor (perfmon) on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Windows Performance Monitor (perfmon) on Windows Server 2019

Introduction to Windows Performance Monitor on Windows Server 2019 Windows Performance Monitor (perfmon) is a built-in Windows Server 2019 tool that provides real-time and historical monitoring of hundreds of system performance counters, including CPU, memory, disk, network, and application-specific metrics. Perfmon supports Data Collector Sets for capturing performance data over time, which is invaluable for […]

Read more
CHAT